December 29, 2016 | Author: Nur Hafizah Alwi | Category: N/A
Science Module Form 2 – Chapter 1
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Science Module Form 2 – Chapter 1
Sensory organs and their functions
EYES Senses : Sight Stimulus : Light Function : Seeing things around us
SKIN
EARS
Senses : Touch Stimulus : Touch, pain, pressure and temperature Function : Response to sense of touch
Sensory organs
NOSE Senses : Smell Stimulus : Chemical in the air Function : Smelling chemicals and food
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Senses : Hearing Stimulus : Sound Function : Hearing sound
TONGUE Senses : Taste Stimulus : Chemical in food Function : Tastes food
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Science Module Form 2 – Chapter 1
The Exercise 1.1
1. The following table shows the stimuli detected by the various sensory organ. Complete the table. Sensory organ Nose
Stimulus Chemical substances in food
Eye Sound Skin
2. The following shows the pathways from stimulus to response. Fill in the blanks.
Stimulus
Nerves
Response
3. Complete the following table. Stimulus (a) Ticking a clock (b) Colour of traffic light ( c) Sourness of lime juice (d) Watching a movie (e) Coldness of ice cubes (f) Sharpness of a pencil point
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Sense
Sensory organ
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Science Module Form 2 – Chapter 1
Sensory Organ
: ________________________________________
Senses
: ________________________________________
Stimulus
: ________________________________________
Name of Receptor
: ________________________________________
Ossicles
Ear pinna
Oval window
Cochlea
Ear canal
Eardrum
Auditory nerve
Eustachian tube
Parts of the ear
Function Vibrate when sound waves hit on it. Amplify sound vibrations Changes sound vibrations to nerve impulses Send nerve impulses to the brain for interpretation. Equalizes the air pressure in both sides of the ears. Control the balance of the body.
Semicircular canal
How do we hear ? Auditory canal
Oval window
Brain
2 structures not by : Abiana Bt. Ja’afar (GCSC) involved inPrepared hearing mechanism
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Exercise 1.4
Science Module Form 2 – Chapter 1
1. Diagram 1 shows a cross section of the human ear.
Diagram 1
(b) Name the labeled structures using the following terms. Eardrum
Auditory canal
Cochlea
(i) P : ____________________________________________________ (ii) Q : ____________________________________________________ (iii) R : ____________________________________________________ (c) (i) What is structure S? ________________________________________________________ (ii) State the function of structure S? ________________________________________________________
2.
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Diagram 2
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Science Module Form 2 – Chapter 1
Diagram 2 shows the structure of human ear. (a) Name parts P, Q, R and S. (i) P (ii) Q (iii) R (iv) S
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________ : ____________________________________________________
(b) Name the part that amplifies sound vibrations. ___________________________________________________________ (c) Which part converts the sound vibration to nerve impulses? ___________________________________________________________ (d) Name two parts in the ear that do not involve in hearing. (i) ________________________________________________________ (ii) ________________________________________________________
3. Diagram 3 below shows the structure of the human ear.
Diagram 3
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Science Module Form 2 – Chapter 1
(a) Label part X and Y. (i) X : ____________________________________________________ (ii) Y : ____________________________________________________ (b) Complete the flow chart below to show the route of sound waves entering the ear.
Ear pinna
P
Q
R
Oval window
(c) Mark “N” in the diagram above to show two parts of the ear which are not involved in the hearing mechanism.
4. Diagram 4 shows the cross-section of a human ear.
Diagram 4 (a) Label the following parts in Diagram 1 Cochlea
Ossicles
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Auditory nerve
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S
Science Module Form 2 – Chapter 1
(b) State one function of X. ___________________________________________________________ (c) What is the frequency range of sound that can be detected by our ears? ___________________________________________________________
5. The diagram below shows a structure of the ear.
(a) Name the parts of the ear shown in the diagram.
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Science Module Form 2 – Chapter 1
Sensory Organ
: ________________________________________
Senses
: ________________________________________
Stimulus
: ________________________________________
Name of Receptor
: ________________________________________
Location of Receptor
: ________________________________________
Aqueous humour
Cornea
Retina
Optic Nerve
Chroid
Lens
Vitreous humour
Yellow spot
Blind spot
Iris
Pupil
Sclera Conjunctiva
How do we see ? Parts of the eye
Function Protects the eye Allows light to enter the eye Controls the size of pupil Sends nerve impulses to the brain for interpretation Detects light stimulus Maintains the shape of the eye Focuses light onto the retina
Aqueous humour
Vitreous humour
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Science Module Form 2 – Chapter 1
Exercise 1.5 1. Diagram 1 shows a human eye.
Diagram 1 (a) Label the parts that are labeled H, I and L i Diagram 1 using the information given below. Cornea
Lens
Pupil
(b) What is the function of K? ___________________________________________________________ (c) At which of the points, 1 or 2, the eye cannot see? Briefly explain it. ___________________________________________________________ ___________________________________________________________
2. Diagram 2 shows the cross-section of an eye.
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Diagram 2
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Science Module Form 2 – Chapter 1
(a) Name X ? ___________________________________________________________ (b) State its function. ___________________________________________________________ (c) What is the function of Y? ___________________________________________________________
(d) Diagram sows a vision defect
(i) Name the vision defect. ________________________________________________________ (ii) How to correct the defect? ________________________________________________________
3. Diagram 3 shows a section through the human eye.
Diagram 3
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Science Module Form 2 – Chapter 1
(a) Name the parts labeled P, Q and R by using the following terms. Suspensory ligament
P Q R
Iris
Ciliary muscle
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________
(b) State the functions of X and y. X Y
: ____________________________________________________ : ____________________________________________________
(c) State one difference between the blind spot and the yellow spot. ___________________________________________________________
4. Diagram 4 shows the cross-section of the human eye.
Diagram 4
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Science Module Form 2 – Chapter 1
(a) The flow chart below shows the flow of light in the sight mechanism. Cornea
E
F
Brain
Eye lens
G
Vitreous humour
Retina
Label the parts E, F and G in the above diagram. E F G
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________
(b) Serena suffers from an eye defect due to the part labeled Q being too thin. At which part of the eye the image seem to appear? ___________________________________________________________ (c) What is the term used for this type of eye defect? ___________________________________________________________ (d) What type of lens can be used to correct her eye defect? ___________________________________________________________
5. Diagram 5 below shows a cross-section of the human eye.
Diagram 5
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Science Module Form 2 – Chapter 1
(a) Name parts X, Y and Z of the eye in the diagram above. X Y Z
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________
(b) Mark “P” in the diagram above to show the part where the image are formed.
(c) Complete the flow chart below to show the path of light rays from the object entering the eye. Cornea
Eye lens
(d) Name the part of the eye which functions to prevent the reflection of light in the eye. ___________________________________________________________
6. Diagram 6 shows the cross-section of the human eye.
Diagram 6 (a) Label one of the following structures in Diagram 6 Sclera
Choroid
Retina
(b) Name structure Y. __________________________________________________________
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Retina
Science Module Form 2 – Chapter 1
Sensory Organ
: ________________________________________
Senses
: ________________________________________
Stimulus
: ________________________________________
Name of Receptor
: ________________________________________
3 Main Layers
________________________________________
Dermis
Pressure receptor
Epidermis
Touch receptor
Fatty layer
Heat receptor
Pain receptor
Cold receptor
2 factors affect the SENSITIVITY of the skin
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Examples parts of body More Sensitive Less Sensitive
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Science Module Form 2 – Chapter 1
Exercise 1.2 1.
Figure 1 Figure 1 shows the cross- section of human skin. (a) Label the above figure with the following information. Pain receptor
cold receptor
sweat gland
(b) Nazri accidentally drops a coin on the floor. It rolls under a sofa. He put his hand under the sofa and retrieves the coin. What senses are involved in this sequence of action? ___________________________________________________________
2. Figure 2 shows a cross –section of the human skin.
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Figure 2
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Science Module Form 2 – Chapter 1
(a)Name the receptors labeled W, X, Y and Z. W : _______________________ X : _______________________
Y : ________________________ Z : ________________________
(b) When you accidentally step on a sharp nail, which receptor will be activated? ___________________________________________________________
(c) Name two factors that influence the sensitivity of the skin to external stimuli. (i) ________________________________________________________ (ii) ________________________________________________________
3. Figure 3 shows the cross section of human skin.
Figure 3 (a) Label the following structures in the figure above. Receptor
sweat gland
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epidermis layer
adipose layer
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Science Module Form 2 – Chapter 1
(b) State three receptors that can be found in the second layer of our skin. (i) ________________________________________________________ (ii) ________________________________________________________ (iii) ________________________________________________________
(c) Based on the given statement above, make a hypothesis about the sensitivity of our skin. ___________________________________________________________
4. Figure 4 shows a cross-section of the human skin.
Figure 4 (a) Name the labeled structures using the following terms. Pain receptor Cold receptor
Touch receptor Pressure receptor
Heat receptor Epidermis
Dermis
(b) Name two areas of the body which are (i) more sensitive : ___________________________________________ (ii) less sensitive : ___________________________________________ ( c) State two factors that affect the sensitivity of the skin. (i) ________________________________________________________ (ii) ________________________________________________________
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Science Module Form 2 – Chapter 1
5. The cross-section of the human skin is shown in the diagram.
Figure 5 (a) Liza is holding a glass of orange juice. She can feel that the glass is cold. Which receptor is stimulated when she is holding the glass? ________________________________________________________ (b) Label the above diagram with these information. Touch receptor Pressure receptor
Q S
Heat receptor Pain receptor
R P
(c) Name the part that actively produces sweat when you do physical exercise. ________________________________________________________
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Science Module Form 2 – Chapter 1
Sensory Organ
: ________________________________________
Senses
: ________________________________________
Stimulus
: ________________________________________
Name of Receptor
: ________________________________________
Location of receptor
: ________________________________________
How Howdodowe weSMELL? SMELL?
Chemicals in the air Receptor in sensory organ
Response
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Nerves
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Science Module Form 2 – Chapter 1
Sensory Organ
: ________________________________________
Senses
: ________________________________________
Stimulus
: ________________________________________
Name of Receptor
: ________________________________________
Location of receptor
: ________________________________________
1 2
1 : _____________________________
B
2 : _____________________________
So
3 : _____________________________
S
2
3
3
4 : _____________________________
Sweet
4
Why food becomes tasteless when e got a flu/ cold? Because a lot of ___________is produced, blocked the ________________to detect the smell.
How Howdodowe weSMELL? TASTE?
Chemicals in the food Receptor in sensory organ
Response
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Science Module Form 2 – Chapter 1
Exercise 1.3 1. Diagram 1 shows the areas P, Q, R and S on the tongue that are sensitive to taste.
Diagram 1 (a) What taste can be detected in the following areas? P R
: ___________________ : ___________________
Q S
: ____________________ : ____________________
(b) Give an example of a type of food that can be detected in areas R and S. P S
: ____________________________________________________ : ____________________________________________________
(c) What is the taste of food when the nose is closed? ___________________________________________________________ (d) Give a reason for your answer. ___________________________________________________________
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Science Module Form 2 – Chapter 1
2. The diagram shows the surface of human tongue.
(a) Write the word bitter and sweet to show the parts of the tongue that are sensitive to the two tastes. (b) State the taste of the following food (i) Unripe mangoes - _________________________________________ (ii) Honey - _________________________________________
3. Diagram 2 shows a tongue.
Diagram 2 (a) Can the part labeled S detect sour tastes? ___________________________________________________________ (b) Give one reason for your answer in a(i). ___________________________________________________________
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Science Module Form 2 – Chapter 1
(c) State all the different tastes that can be detected by the tongue. ___________________________________________________________ (d) Name the sensory cells in the tongue that can detect various tastes. ___________________________________________________________ (e) Name the fluid that dissolves chemical substances in food so that it can be detected by the tongue. ___________________________________________________________
4. The diagram below shows the areas of the tongue which are sensitive to various tastes.
(a) Write in the boxes provided to show the location of the areas of the tongue that is sensitive to the following food. (i) Salted egg (ii) Panadol
(v) Bitter gourd (vi) Cocoa powder
(iii) Honey
(vii) Vinegar
(iv) Natural Yogurt
(viii) Ice-cream
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Science Module Form 2 – Chapter 1
5. Diagram 3 shows a human sensory organ.
Diagram 3 (a) F, G, I and J are areas on the tongue which are sensitive to tastes. Label F, G, I and J in Diagram 1.
(b) Explain briefly how we can detect taste. ___________________________________________________________ ___________________________________________________________
Food becomes tasteless when a person is having a cold.
(c) Draw a conclusion based on the above statement. ___________________________________________________________ ___________________________________________________________
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Light and sight Science Module Form 2 – Chapter 1
Real
Formation of shadow
Periscopes
inverted
Eclipse of the Moon
Kaleidoscopes
Smaller than the actual object Eclipse of the Sun
The star seems to be further
Mirrors
The straw appears to be bent
The pond appears to be shallower
Characteristics of the image formed on the retina
The characteristics of light :
Examples of phenomena
Light travels in straight line
Light can be reflected
Refraction of light
a)
Light can be refracted
Incident ray
glass
Light can be dispersed
air
b)
Reflection of Light
Incident ray
Normal
Normal
Reflected ray
Incident ray glass air
c)
Incident ray
Angle of incident
Angle of reflection Plane mirror
Normal
i = r air
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Science measures Module Form 2 – Chapter 1 Defects of vision and corrective
Defects
Corrections
Short – sightedness or myopia Characteristics : •
•
A distant object cannot be seen clearly because the image is focused in front of the retina. This is because the eye lens is too thick or the eyeball is too long.
•
It is corrected by using a concave lens to diverge the rays of light on the retina
•
It is corrected by using a convex lens to coniverge the rays of light on the retina
.
Long- sightedness or hypermetropia Characteristics : •
•
A near object cannot be seen clearly because the image is focused behind the retina. This is because the eye lens is too thin or the eyeball is too short.
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Science Module Form 2 – Chapter 1
SHORT - SIGHTEDNESS
LONG- SIGHTEDNESS
MODEL
MODEL
REASONS a) Eyeball too ___________________
a) Eyeball too ___________________
b) Lens too _____________________
b) Lens too _____________________ SYMPTOMS
a) Near objects seen ______________
a) Far objects seen ________________
b) Far objects appear ______________
b) Near objects appear ______________
FORMATION OF IMAGE Image is focused _______________________
Image is focused ______________________
CORRECTION By a ________________________
Thick
Long
Thin
Blur
Behind of the retina
By a ________________________
Short
Clear
Concave lens
Astigmatism
Caused by the ______________________ of the cornea.
Convex lens
Irregular surface
Presbyopia
• •
Corrected by Prepared using ____________________ by : Abiana Bt. Ja’afar (GCSC)
In front of the retina
Long-sightedness experienced by old people. Corrected by wearing bifocal lens. e-mail :
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Science Module Form 2 – Chapter 1
Exercise 1.6 1. Fill in the blanks.
(a) What is the vision defect shown in the above diagram? ___________________________________________________________ (b) The image from a ________________________ object is focused _____________________ of the retina. (c) This defect is caused by the lens that is too ___________________ or the eyeball is too _____________. (d) This defect can be corrected by wearing glasses with _____________________.
2.
(a) This vision defect shown in above diagram is ______________________. (b) A person who has this defective vision sees ___________________ objects clearly. (c) This defect is caused by ___________________ that is too thin or if the _____________________ is too short. (d) This defect can be corrected by wearing glasses with ________________.
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Science Module Form 2 – Chapter 1
3.
Diagram 1 Diagram 1 shows the structure of a human eye. (a) Mark (A) to represent the yellow spot and (B) to represent the blind spot in the diagram above.
(b) State the function of each of the parts labeled X, Y and Z. i. X ii. Y iii. Z
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________ A man cannot see distant objects clearly.
(c) i. Give two causes of the eye defect mentioned. ________________________________________________________ ________________________________________________________
ii. Name the defect mentioned in (c)i.. ________________________________________________________
iii. Suggest one way to correct the defect ________________________________________________________
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Science Module Form 2 – Chapter 1
4.
Diagram 2 Diagram 2 show two common vision defects. (a) Name the vision defect in (i) X : ____________________________________________________ (ii) Y : ____________________________________________________ (b) State the types of lens used to correct the vision defects in (i) X : ____________________________________________________ (ii) Y : ____________________________________________________ (c) Draw the diagrams below how you can correct the vision defects by using the lenses you named in (b). (i)
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(ii)
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Science Module Form 2 – Chapter 1
5. The experiment in figure below is carried out to show short-sightedness.
(a) Complete the light rays in the figure above to show short- sightedness.
(b) What parts of the eye are represented by the following materials in this experiment? (i) Convex lens on flask (ii) Fluorescent solution (iii) Surface X
: ____________________________________ : ____________________________________ : ____________________________________
(c) Give one reason why this defect occurs. ___________________________________________________________ (d) Where is the image formed in the eye of a person who is short-sighted? ___________________________________________________________ (e) How can short- sightedness be corrected? ___________________________________________________________
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Science Module Form 2 – Chapter 1
6. Diagram 3 shows an eye with a vision defect.
Diagram 3 (a) Name the visual defect? ___________________________________________________________ (b) Give two conditions of the eyes that caused the defect? ___________________________________________________________ ___________________________________________________________ (c) How can the defect be corrected? ___________________________________________________________ (d) On the diagram, draw the correction to the vision defect.
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Science Module Form 2 – Chapter 1
Stereoscopic Vision and Monocular Vision Stereoscopic vision •
_________________________ _________________________
•
Location of the eye
•
_________________________ Picture 566.jpg _________________________
•
Size of the field of vision
•
_________________________ _________________________
•
Overlapping fields of vision
•
Can estimate distance accurately See things in three dimensions
•
Importance of vision
• •
Tiger, owls, human beings _________________________ _________________________
The side of the head
•
_________________________ _________________________
•
_________________________ _________________________
•
_________________________ _________________________
•
Can see predators in all directions Cannot judge the distance accurately
•
Examples
•
•
Narrow
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In front of the head
Monocular vision
Differences
Wide
Pigeons, rabbits, cows, fish _________________________ _________________________
Overlapping fields e-mail :
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No overlapping fields
Science Module Form 2 – Chapter 1
Exercise 1.7
1. Classify the animals according to type of vision. Tiger Lion Goose
Monkey Cat Eagle
Rat Deer Fish
Chicken Owl Dog
Cow Goat Human
Type of vision
Stereoscopic
Monocular
The predator possesses __________________ vision whereas the prey possesses __________________ vision.
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Science Module Form 2 – Chapter 1
2.
Diagram 1
P
Q
Diagram 8 shows an owl and a rabbit. (a) Name the type of vision on (i) Owl (ii) Rabbit
: _______________________________________________ : _______________________________________________
(b) State one advantage and one disadvantage in the vision you name in (a)(i) . (i) Advantage : __________________________________________ (ii) Disadvantages : __________________________________________ (c) State one advantage and one disadvantage in the vision you name in (a)(ii) . (i) Advantage (ii) Disadvantage
: __________________________________________ : __________________________________________
(d) Give one other example of each of the animals that has the same vision as animal P and Q. (i) P (ii) Q
: _______________________________________________ : _______________________________________________
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Science Module Form 2 – Chapter 1
3. Diagram 2 shows the head and the eyes of a bird.
Diagram 2
(a) What is term used to describe the vision above? ___________________________________________________________ (b) Draw the visual field of both eyes to the diagram above.
(c) State two characteristics of the above vision. (i) ________________________________________________________ (ii) ________________________________________________________ (d) Besides birds, name two animals that have the similar vision. (j) ________________________________________________________ (ii) ________________________________________________________
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Science Module Form 2 – Chapter 1
4. The diagram above shows the pictures of some animals
(a) Based on your observations of the pictures in the diagram, state one characteristic of any four of the animals P, Q, R, S and T. P Q R S T
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________ : ____________________________________________________ : ____________________________________________________
(b) Classify the animals P, Q, R, S and T into two groups based on type of vision. Name the animals belonging to each group
T, U, V and W
Type of vision
Name of animals
i
i
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ii
ii
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Science Module Form 2 – Chapter 1
Sound and Hearing
Sound is produced by vibration
Sound needs a medium to travel
Properties of sound Soft and rough surfaces are good sound absorbers
Hard and smooth surfaces are good sound reflectors
Stimuli and Responses in Plants Type of tropism Phototropism Geotropism Hydrotropism Thigmotropism
Nastic movements
Definition
Stimulus
Plant response to light Plant response to gravity Plant response to water Movement made by a plant in response to touch or contact Movement made by a plant in response to external stimuli
Light
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Part of plant involved Shoot
Gravity
Root
Water
Root
Touch
Tendrils
Touch
Leaves
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Science Module Form 2 – Chapter 1
Exercise 1.8
1. Complete the table below Tropism Phototropism
Response Gravity Water Touch or contact
2. Complete the following chart about the response of plants to stimuli and their functions.
Response of plants to
Light
Water
Gravity
Types
Functions
Shoots
Roots
Shoots
Roots
Shoots
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Roots
Science Module Form 2 – Chapter 1
3. Figure 1 shows reactions of a plant to external stimuli.
Figure 1 (a) Write phototropism, geotropism and thigmotropism in the appropriate box in Figure 1.
(b) Which part of the plant performs (i) Negative hydrotropism : ____________________________________ (ii) Positive geotropism : ____________________________________ (iii) Positive phototropism : ____________________________________ (c) Name two examples of plants that perform nastic movements. (i) ________________________________________________________ (ii) ________________________________________________________
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Science Module Form 2 – Chapter 1
4. The diagram shows the responses of various plant parts towards external stimulus.
(a) Based on the diagrams, give the respond characteristics of (i) P (ii) Q (ii) R (iii) S
: ____________________________________________________ : ____________________________________________________ : ____________________________________________________ : ____________________________________________________
(b) Group the above pictures P, Q, R and S into two groups, giving the parts of the plants involved.
P, Q, R and S
Common grouping
Parts of plant 5. gjhihkj
i
i
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ii
ii
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Science Module Form 2 – Chapter 1
5. The diagram shows the set –up of an experiment to study how plants respond to light.
(a) Draw and show how the seedlings in the diagram will grow and respond towards light after 5 days.
R
S
(b) State the following variables in the experiment. (I) Manipulated (ii) Responding (iii) Constant
: __________________________________________ : __________________________________________ : __________________________________________
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Science Module Form 2 – Chapter 1
(c) Which part of the seedlings responds towards light? ___________________________________________________________ (d) What is the name of the response of the shoots of plants towards light? __________________________________________________________
6. The diagram shows the set-up of an experiment.
(a) Draw and show how the seeds will grow after 3 days in the following diagram.
(b) Which part of the seed shows (i) positive geotropism : ____________________________________ (ii) negative geotropism : ____________________________________ (c) Explain how this type of tropism helps in the survival of plants. ___________________________________________________________ (d) Name one other type of tropism that enables the roots of the plant to search for water. ___________________________________________________________
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Science Module Form 2 – Chapter 1
7. The experiment in the figure below is carried out to study the response of plants to water.
(a) What variables are involved in this experiment? (i) Manipulated (ii) Responding (iii) Constant
: __________________________________________ : __________________________________________ : __________________________________________
(b) Suggest the relationship between the variable which is manipulated and the variable which responds. ___________________________________________________________ (c) Draw the response of the roots of seedlings in the figure below at the end of experiment.
(d) What is the name given to the response of the roots to water? ___________________________________________________________ (e) What is the importance of the roots responding in (d) to plants? _________________________________________________________
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Science Module Form 2 – Chapter 1
8. The diagram shows the set-up of an experiment.
(a) What is the purpose of conducting the above experiment? ___________________________________________________________ (b) Describe briefly what will happen to the roots of seedlings in beaker Q after five days. ___________________________________________________________ (c) Draw a diagram to show what will happen to the seedlings in beaker P after five days.
(d) Name the response that is shown by the roots in beaker P and beaker Q. ___________________________________________________________ (e) Complete the following table. Tropism
Stimulus Light
Geotropism
Prepared by : Abiana Bt. Ja’afar (GCSC)
e-mail :
[email protected].
Science Module Form 2 – Chapter 1
9.
(a) Explain the hypothesis of the experiment shown in the above figure. ___________________________________________________________ (b) Give the variable that is (i) Constant (ii) Manipulated (iii) Responding
: __________________________________________ : __________________________________________ : __________________________________________
(c) What is the use of anhydrous calcium chloride? ___________________________________________________________ (d) What is the result after the experiment is left for three days? ___________________________________________________________
(e) Draw what you will see one week after the rooting of the seedlings.
(f) What conclusion can you make? ___________________________________________________________
Prepared by : Abiana Bt. Ja’afar (GCSC)
e-mail :
[email protected].
Science Module Form 2 – Chapter 1
Exercise 1.1
1. Sensory organ Nose Tongue Eye Ear Skin
2. Stimulus
Response
Stimulus Chemical substances in the air Chemical substances in food Light Sound Touch, pain, pressure and temperature Receptor
Effector
Nerves
Brain
3.
Prepared by : Abiana Bt. Ja’afar (GCSC)
e-mail :
[email protected].
