1. Trees are an essential part of the ecosystem. Which of the following is NOT its function?
A. It gives shelter
B. It provides foods
C. It creates heat
D. It nourishes the soil
2. Which of the following DOES NOT belong to the group?
A. Turtle B. Snake C. Monkey D. Air
3. What is the role of an earthworm in the soil?
A. It warms the soil.
B. It increases the fertility of the soil.
C. It prevents insects from eating the plants.
D. It lessens the amount of bacteria in the soil.
4. An ecosystem is made up of biotic and abiotic factors. The following are Abiotic factors
except ____________.
A. atmosphere B. frog C. river D. sunlight
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5. What will happen if one existing biotic component in the ecosystem is suddenly destroyed?
A. More space will be given to dominant organisms.
B. The ecosystem will continue to exist and repair itself.
C. It will give other organisms more space to live in this ecosystem.
D. Other organisms that depend to this component might not be able to survive.