Biology Olympiad Class 6 & 7

CAREER POINT PRE-FOUNDATION COURSE CLASS-6 & 7 SUMMER WORKSHOP Daily Practice Problem Sheet Subject : Biology

DPPS. NO. – 01 .

Topic : Cell Q.1

Among Amoeba, hen, octopus, Paramecium and bacteria, the unicellular organisms are (A) Amoeba, octopus (B) hen, octopus, bacteria (C) Amoeba, Paramecium, bacteria (D) Paramecium, hen

Q.2

The term cell was coined by Robert Hooke, when he was examining under the microscope the slice of (A) cork

Q.3

Q.4

Q.5

Q.6

Q.7

Q.8

(B) egg

Smallest cell in size observed in bacteria is (A) Bacillus (B) Cynobacterial

(C) leaf

(D) onion

(C) Mycoplasmas

(D) Acetobacter

Plasma membrane and rigid outer layer cell wall both give (A) shape to the cell (B) colour to the cell (C) length to the cell

(D) function to the cell

Match the following : (i) Protoplasm (A) cell control unit (ii) Nucleus (B) Condensed chromatin (iii) Organelles (C) Liquid substance (iv) Chromosomes (D) Smaller components of cell (A) (i)-(A); (ii)-(D); (iii)-(C); (iv)-(B) (B) (i)-(B); (ii)-(A); (iii)-(C); (iv)-(D) (C) (i)-(C); (ii)-(D); (iii)-(B); (iv)-(A)

(D) (i)-(C); (ii)-(A); (iii)-(D); (iv)-(B)

The semi-fluid gel present in the nucleus is (A) protoplasm (B) nucleoplasm

(C) cytoplasm

(D) protein solution

The largest cell in human body – (A) nerve cells (B) muscle cells

(C) red blood cells

(D) epithelial cells

Select the false statement from the given (A) The outermost layer in plant cells is cell wall (B) Activities of the cell is controlled by nucleus (C) 90% by weight, protoplasm is made up of compounds of elements carbon, oxygen, nitrogen and hydrogen (D) Plastids are found in both animal as well as plant cells

Q.9

A cell is observed with help of (A) telescope (B) microscope

(C) electroscope

CAREER POINT, 128, Shakti Nagar, Kota-324009 (Raj.), Ph: 0744-2503892

(D) kaleidoscope Page # 1

Q.10

Cell is the structural and functional unit of life, it means (i) Cell is the basic structural unit of living organism (ii) Cells carry out all the body function of organisms (iii) Function of organisms is based on functions of cells (iv) Cells do not perform the body function True statements are – (A) (i), (iii) & (iv) (B) (i) only (C) (i) & (ii)

Q.11

Q.12

Q.13

In plant cells, nucleus lies (A) at periphery (C) in between the center and periphery

(B) in the center (D) near the nucleus

The function of mitochondria in cells is (A) to give colour (B) photosynthesis

(C) to release energy

Q.15

Q.16

(C) gel

(D) nucleoplasm

The centrally located part of the cell is (A) golgi apparatus (B) mitochondria

(C) lysosomes

(D) nucleus

The cell wall in plants is (A) living (C) semi living

(B) Dead (D) initially living then becomes non-living

Q.18

Q.19

Q.20

(B) cytoplasm

The part of the cell that controls all activities of the cell is the (A) nucleus

Q.17

(D) to give shape

The jelly like substance present between the nucleus and cell membrane is called (A) protoplasm

Q.14

(D) (i), (ii) & (iii)

(B) mitochondria

(C) chromosomes

(D) lysosomes

The cell organelle also known as digestive bag or suicidal bag is (A) ribosome (B) chromosome (C) lysosome

(D) stomata

The cells that are branched in human beings are (A) nerve cells (B) muscle cells

(C) red blood cells

(D) epithelial cells

The largest organelle present in the plant cell is (A) mitochondria (B) plastid

(C) vacuole

(D) nucleus

Which of the organelle has double membrane (A) Mitochondria (B) Ribosome

(C) Lysosome

(D) None of these

CAREER POINT, 128, Shakti Nagar, Kota-324009 (Raj.), Ph: 0744-2503892

Page # 2

CAREER POINT PRE-FOUNDATION COURSE CLASS-6 & 7 SUMMER WORKSHOP Daily Practice Problem Sheet Subject : Biology

DPPS. NO. – 02 .

Topic : Nutrition Q.1

Match the given terms in list I with their definitions in list II: I. Nutrition A. Organism deriving its food from dead and decaying plants and animals. II. Parasite B. Association of two different organisms in which both are benefitted. III.Saprophyte C. Process of obtaining and utilising food. IV. Symbiosis D. Organism that derives its food from the living body of another organism. (A) I-B, II-C, III-D, IV-A (B) I-C, II-D, III-A, IV-B (C) I-D, II-A, III-B, IV-C (D) I-A, II-B, III-C, IV-D

Q.2

The undigested, semisolid food is collected in (A) anus (B) intestine

(C) rectum

In our mouth, there are (A) 1 pair of salivary glands (C) 3 pairs of salivary glands

(B) 2 pairs of salivary glands (D) 4 pairs of salivary glands

Digestion of food takes place in (A) mouth, small intestine (C) mouth, anus

(B) mouth, large intestine (D) mouth, rectum

Q.3

Q.4

Q.5

The function of hydrochloric acid in the stomach is to (A) digest carbohydrates (B) clean the stomach (C) kill the germs (D) break down proteins

Q.6

Bile is secreted by the (A) stomach

Q.7

Q. 8

Q.9

(B) small intestine

(D) villi

(C) pancreas

(D) liver

The length of small intestine is about (A) 6m - 7m (B) 7m - 8m

(C) 8m - 9m

(D) 9m - 10m

Nutrition involves the study of (A) plants and animals (C) photosynthesis and respiration

(B) the way an organism obtains food (D) process of excretion

Human beings cannot eat grass because (A) they eat fruits and vegetables (C) they cannot digest cellulose

(B) they are omnivorous (D) grass contains certain poisonous substances

CAREER POINT, 128, Shakti Nagar, Kota-324009 (Raj.), Ph: 0744-2503892

Page # 1

Q.10

The glands situated in the mouth that secrete amylase enzyme are called (A) salivary glands (B) pituitary glands (C) hypothalamus glands (D) extra cellular gland

Q.11

Assimilation is(A) The process of break down of large food molecules into simpler molecules (B) The process by which undigested food is ejected out of the body (C) The process by which the digested food, carried by the blood is taken in by the cells of the body (D) Process of exchange of oxygen and carbon dioxide between blood and the cells of the body

Q.12

Oesophagus is another name of (A) stomach (B) wind pipe

(C) food pipe

Which one of the following is true? (A) Canines are well developed in carnivores (C) Canines are poorly developed in carnivores

(B) Canines are well developed in herbivores (D) Molars are well developed in carnivores

The walls of the large intestine absorb (A) water (B) digested food

(C) undigested food

Q.13

Q.14

(D) gall bladder

(D) cellulose

Q.15

Hetrotrophs are organisms, which (A) feed on dead and decaying organisms (B) draw nutrition from the living tissues of other organisms (C) depend on other sources for food (D) manufacture their own food

Q.16

The hardest substance and hardest tissue of our body are respectively (A) dentine and cartilage (B) enamel and bone (C) pulp and bone (D) gum and cartilage

Q.17

The organ which does not secrete any enzymes for the digestion of food is (A) pancreas (B) stomach (C) kidneys (D) small intestine

Q.18

Food moves in the alimentary canal from one region to another by a process called (A) locomotion (B) pumping (C) peristalsis (D) diastole

Q.19

The structure which increases the surface area in small intestine is (A) villi (B) pseudopodia (C) tentacles

Q.20

(D) alveoli

Various steps of human nutrition are in the following order (A) ingestion, egestion, digestion, absorption and assimilation (B) ingestion, egestion, assimilation, absorption and assimilation (C) ingestion, assimilation, digestion, absorption and egestion (D) ingestion, digestion, absorption, assimilation and egestion

CAREER POINT, 128, Shakti Nagar, Kota-324009 (Raj.), Ph: 0744-2503892

Page # 2

CAREER POINT PRE-FOUNDATION COURSE CLASS-6 & 7 SUMMER WORKSHOP Daily Practice Problem Sheet Subject : Biology

DPPS. NO. – 03 .

Topic : Transportation Q.1

The movement of oxygenated blood from the left auricle to left ventricle and then through the aorta to all parts of the body is called (A) extracellular circulation (B) pulmonary circulation (C) systemic circulation (D) intracellular circulation

Q.2

Pulmonary artery carries impure blood i.e., the blood rich in carbon-dioxide from the (A) lungs (B) heart (C) body parts (D) tissues

Q.3

Valves that direct the flow of blood only in one direction are present in (A) arteries

(B) veins

(C) capillaries

(D) arteries, veins and capillaries

Q.4

Transport of waste material, food and oxygen, within the body of lower animals like Hydra and sponges is carried out by (A) blood (B) water (C) air (D) haemoglobin

Q.5

Flow of blood within the body is called (A) heart beat (B) blood circulation

Q.6

(C) blood diffusion

(D) blood flow

Match the components of column A with their correct counter part in column B: Column A Column B A. Haemoglobin (i) absorption of water B. Atria (ii) contains water and salt C. Root hairs (iii) RBC D. Sweat (iv) heart (A) A-(iii), B-(iv), C-(ii), D-(i) (B) A-(i), B-(iv), C-(ii), D-(iii) (C) A-(iii), B-(iv), C-(i), D-(ii)

(D) A-(ii), B-(iii), C-(iv), D-(i)

Q.7

During an injury, blood starts flowing out of a cut or wound. After sometime, a clot is formed on wound by (A) R.B.C. (B) W.B.C. (C) platelets (D) haemoglobin

Q.8

During heartbeat, cardiac muscles (A) only contract (B) only relax

(C) do not function

One micro litre of blood contains (A) 3,000-11,000 WBC (C) 4,500-11,000 WBC

(B) 4,000-11,000 WBC (D) 5,000-11,000 WBC

Q.9

CAREER POINT, 128, Shakti Nagar, Kota-324009 (Raj.), Ph: 0744-2503892

(D) contract and relax

Page # 1

Q.10

Q.11

Q.12

Q.13

Q.14

Q.15

Q.16

Q.17

Q.18

In humans, red blood cells develop in the (A) bone marrow (B) cartilage

(C) capillary

WBC plays a key role to (A) produce haemoglobin (C) produce immunity

(B) produce blood cell (D) prevent bleeding

In humans, haemoglobin transports oxygen first from (A) kidney (B) liver (C) heart

(D) lungs.

Double blood circulation occurs in (A) reptiles (B) fishes

(C) mammals

(D) amphibians

Arteries and veins are joined by a network of (A) valves (B) muscles

(C) capillaries

(D) platelets

The average pulse rate of a human being is (A) 70 beats per minute (C) 82 beats per minutes

(B) 72 beats per minutes (D) 92 beats per minute

The lower chambers of human-heart are called (A) atria (B) ventricles

(C) arteries

(D) veins.

Pulse rate can be measured by feeling a person’s (A) nerve (B) artery

(C) capillary

(D) vein

(C) haemoglobin

(D) plasma

The fluid part of blood is called (A) RBC

Q.19

Q.20

(D) veins.

(B) WBC

Pulmonary vein carries (A) oxygen rich blood

(B) carbon rich blood

(C) carbon dioxide rich blood

(D) food rich blood.

With respect to the size, the largest cells present in the blood are (A) RBC (B) WBC. (C) platelets

CAREER POINT, 128, Shakti Nagar, Kota-324009 (Raj.), Ph: 0744-2503892

(D) plasma.

Page # 2