l. Choose the letter of the correct answer.

1. It is an interaction of two organisms wherein both are getting benefits from each other.
A. Mutualism B. Commensalism
C. Predation D. Parasitism

2. This is an interaction between organisms in which one is benefiting while the one never been affected neither beneficially nor harmfully.
A. Mutualism B. Commensalism
C. Predation D. Parasitism

3. An interaction of prey- predator relationship.
A. Mutualism B. Commensalism
C. Predation D. Parasitism

4. Which is not a living thing?
A. fish B. dog C. house D. plant

5. They are the small organisms that live outside or inside the body of the host.
A. predators B. plants
C. parasites D. non-living things