Directions: Choose the letter of the best answer. Write your answer in your notebook.

1. Which group of organisms can be found in the mangrove ecosystem?
a. mussels, fish, corals
b. worm, rat, fish
c. butterfly, snake, bird
d. mangrove trees, fiddler crab, fish

2. What are the things needed by plants to make their own food?
a. water, chemicals and oxygen
b. oxygen and carbon dioxide
c. oxygen and chemicals
d. carbon dioxide, soil and sunlight

3. Which of the following describes a canopy of the rainforest?
a. composed of trees that are 130 to 180 feet tall
b. about 59 feet and consists of trunk of canopy, shrubs, small plants and trees
c. consists mostly of fungi, insects, worms and litter from taller trees
d. has slender trees from a dense platform of vegetation with 60 to 129 feet.

4. What kind of interaction is shown when one organism kills another organism for food?
a. mutualism
b. commensalism
c. parasitism
d. predation

5. It is an environment where both living and non-living things exist and interact with one another.
a. ecology
b. ecosystem
c. community
d. population

6. Why does dynamite fishing is being prohibited?
a. The use of explosives destroys marine animals.
b. The use of explosives benefits plants and animals.
c. The use of explosives improves marine sanctuary.
d. It makes the coastal area erosion worse.

7. Massive ____________ will destruct natural habitats of wildlife.
a. reforestation
b. reclamation
c. deforestation
d. conservation

8. Why should mangroves be conserved and protected?
a. The mangrove area makes coastal erosion worse.
b. The mangroves provide shelter for fishes and crustaceans.
c. The mangroves serve as dumping site.
d. The mangroves serve as area for fishing.

9. Here are some ways of protecting and conserving wild life, which one is not?
a. Buy products made from animal parts. b. Protect a fish sanctuary .
c. Support programs for wildlife conservation.
d. Help raise funds for environment conservation.

10. What areas or places where fishing and hunting are prohibited?
a. rivers
b. swamps
c. coastal
d. sanctuaries

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