POSTTEST
Directions. Choose the letter of the best answer. Write the chosen letter on a separate sheet of
paper.

1. What do you call the organism that is being hunted in a predation interaction?
A. Prey
B. Hunter
C. Predator D. Host

2. What type of symbiotic relationship does "commensalism" involve?
A. Benefits to both organisms
B. Benefits to neither organism
C. Benefits to one partner while the other is not affected
D. Benefits to one partner at the expense of other

3. Which of the following represents competition?
A. Two lovebirds (male and female) doing a mating dance
B. A dog keeping an eye to its food from other dogs
C. A frog is ready to catch an insect
D. Aphids living in the acacia tree

4. Which two organisms have the same ecological relationship like spider and lizard?
A. Nitrogen-fixing bacteria and Peanut plant
C. Whale and Barnacle
B. Dugong and Remora fish
D. Crocodile and Snake

5. List down pairs of animals from the picture below and identify the ecological relationship they
have.​