First Periodical Exam - Grade 7 Environmental Science SY 2013-2014.pdf

MISAMIS OCCIDENTAL NATIONAL HIGH SCHOOL Gov. A. Bernard St., Poblacion 1, Oroquieta City  City of Good Life

First Periodical Examination Grade 7  – Environmental Environmental Science

Direction: Read and understand the questions carefully. Write the letter of your choice on your answer sheet. Do not write anything on this test questionnaire. Test I. Multiple Choice. Choose the letter of your answer.

1. It refers to the sum of the external forces and conditions on an organism of a community of organisms A. Environment B. Environmental Science C. Ecosystem D. Ecology 2. It is the physical, chemical, and biological properties of soil that influence the life of organisms. A. Climatic Factor B. Edaphic Factor C. Biochemical Cycle D. Environmental Science 3. A relationship that occurs when two or more will use the same essential source, such as food. A. Commensalism B. Competition C. Parasitism D. Predation 4. 5.

It is the path of energy through a sequence of organisms, each serving as food for the next. A. Ecological Pyramid B. Food Chain C. Food Web

D. Food Pyramid

It is a graphical graphical representation designed to show the biomass or biomass productivity at each trophic level in a given ecosystem A. Ecological Pyramid B. Food Chain C. Food Web D. Food Pyramid

6. All are sources of carbohydrates, EXCEPT A. Potatoes B. Pasta

C. Bread

D. Beans

7. It is defined as the variability among living organisms from all sources and the ecological complexes of which they are part A. Variability B. Environment C. Biodiversity D. Variety 8. Refers to the movement of matter within or between the ecosystem, caused by living, geological forces and chemical reactions. A. Life Cycle B. Biochemical Cycle C. Biogeochemical Cycle D. Nutrient Cycle 9. Photosynthesis is to __________ __________ while ammonification is to __________ i. Carbon Cycle iii. Phosphorus Cycle ii. Nitrogen Cycle iv. Water Cycle A. i and ii

B. ii and iii

C. iii and iv

D. iv and i

10. Threats and pressure to Philippine Biodiversity exist because of these reasons EXCEPT A. There is no clear ownership of the natural resource C. There is little punishment for their illegal activities B. Nature views are not priced D. The government is making law and ordinances 11. A certain piece of sliced bread contains about 2 grams of carbohydrates; this means that we can get ________. ________. A. 14 Kcal of Energy B. 14 joules of Energy C. 8 Kcal of Energy D. 8 Kilojoule of Energy 12. Pyramid of Number is to _________ as Pyramid of Biomass is to __________. __________. A. Mass and Quantity B. Energy and Number of Species C. Quantity and Amount in Kilograms

D. KilojoulesandKilograms

13. As energy flows from one trophic level to the next, we can infer that ___________ A. Energy is lost in the system C. Energy is lost as heat and only ten percent is transferred B. Energy is lost as heat to the environment D. Energy remains constant 14. Sun  Grasses  Grasshoppers  Tarsier. The diagram is telling us that grasshoppers are ________. A. Herbivores B. Belong to the second trophic level C. Prey D. All of these 15. Ants love to be in the company of Aphids as it will provide them a source of food for their daily nourishment. On the other part, aphids also are happy because with the presence of ants in their area, they are now protected from organisms that try to eat them. The rela tionship shown is ____________. ____________. A. Mutualism B. Protocooperation C. Commensalism D. Parasitism 16. Lions live for 10 –14 years in the wild, while in captivity they can live longer than 20 years. In the wild, males seldom live longer than 10 years, as injuries sustained from continual fighting with rival males greatly reduce their longevity. The situation show as a __________ __________ relationship. A. Competition B. Predation C. Mutualism D. Commensalism 17. Biotic is to _________ as Abiotic is to _________. _________. A. Predator/Prey B. Rock/Stone

C. Bird/Nest

18. Producer is to __________ as Consumer is to __________. __________. i. Algae ii. Cyanobacteria A. i and ii

B. ii and iii

C. iii and iv

D. Lion/Antelope

iii. Caterpillar iv. Lion D. iv and i Page 1 of 2

19. Oikos is to _________ as Logos is to _________. A. Plan/Study B. Species/Diversity

C. Household/Knowledge

D. Study/Environment

20. Pedro told his best friend that they will recycle their waste paper and plastic water bot tle so that he will be able to help the environment. This concept is about ________. A. Environmental Science B. Environmental Study C. Environmental Education D. Environmental Fanaticism Test II. Define. Base on your own understanding, describe or define the following terms.

21. 22. 23. 24. 25. 26. 27. 28. 29. 30.

Carbon cycle Nitrogen cycle Phosphorus cycle Water cycle Indiscriminate Logging Overharvesting of Resources Ecology Ecosystem Environment Sustainable Development

Test III. Answer as required.

31-34. Explain the importance of the nonliving factor to the survival of living organism. 35-38. How do predation and competition affect an ecosystem? 39-42. Create a food chain from the following organism; Frog, Grass, Grasshopper, Owl, Snake, and Sun. What do you think will happen if one organism, say the frog, is removed from this food chain? 43-46. Create an ecological pyramid of a grassland ecosystem that is made up of 100, 000 grasses; 50,000 grasshoppers, snails and slugs; 105 shrews and moles; and 9 owls. Draw and label properly. 47-50. How many kilocalories does a piece of chocolate cake con taining 35g of carbohydrate, 10g of fat, and 5g of  protein contain?

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