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II. Multiple Choice. Write the letter of the correct answer on the space provided before each number.
11. Which is an example of abiotic factor in the environment?
A. Birds
B. Worms
C. Water
D. Plants
12. Which is an example of biotic factor in the environment?
A. Tiger
B. Rocks
C. Air
D. Light
13. Which is an example of heterotrophs or consumers?
A. Mayana
B. Butterfly
C. Sunflower plant D. Orchids
14. Which is an example of producers or autotrophs?
A. Bees
B. Mosquito
C. Caterpillar
D. Santan
15. Which is NOT an example of ectoparasites?
A. Ascaris (worm) B. Ticks
C. Fleas
D. Leeches
16. It is a relationship in which one species benefit while the other receives neither benefit nor harm.
A. Mutualism
B. Commensalism
C. Predation
D. Competition
17. Happens when one species benefits and individuals of other species are harmed.
A. Competition B. Parasitism
C. Mutualism
D. Commensalism
18. Interaction between organisms or species in which both the organisms or species are harmed or not benefitted.
A. Predation
Symbiosis
C. Commensalism D. Mutualism
19. The relationship in which there is a close and permanent association between organisms of different species.
A. Population B. Predation
C. Symbiosis
D. Competition
D_20. Which is NOT a symbiotic relationship?
A. Mutualism
B. Commensalism C. Parasitism
D. Predation​