Directions: Choose the letter of the best answer. Write your chosen answer on a
separate sheet.
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