12. A certain wasp lays its eggs on the body of a live caterpillar. When the eggs hatch, the wasp larva are eaten by
the caterpillar. What kind of
ecological relationship is this?
A Commensalism
B. Competition
C. Mutualism
D. Predatio
13. The following are abiotic factors that may affect the population of organisms EXCEPT:
A. Farthquake
B. Drought
C. Predator
D. Typhoons
14. During harvest time, abundant supply of food is accompanied by the increase in number of field mice that prey
on the rice plant. Snakes
that prey on field mice also will increase in number. What could be the possible outcomes if the farmers get
rid of the snakes?
I.
II.
The snake population will increase.
The food supply will decrease.
The rice mice population will double
The rice mice population will control the snake
population
IV.
A. I only
B. I and III only
C. I and III only
D. II and IV
only
15. Which of the following are needed in setting up an aquarium as a mini ecosystem?
A Fish and water only
C. Populations of fish, snails, and plants only
B. Water, sand, soil, and light only
D. Communities of different species of organisms,
water, sand, so I and sunlight
16. Ants and acacia trees have a mutualistic relationship. The plant provides the ants with a nest and food. The ants
defend the plant from
predators. Which statement below explains this relationship?
4. They are part of the same ecosystem
C. The ants harm the acacia tree
B. The acacia tree does not benefit from the ant
D. They both benefit from living with each​