Question

In the experiment in which stickleback fish (Gasterosteus aculeatus) were presented with high- and low-quality habitats, why did fish disperse from the high-food side of the aquarium to the low-food side?

a. The low-food side increased in quality.
b. The high-food side decreased in quality.
c. The low-food side per capita benefit equaled that of the high-food side.
d. The low-food side per capita benefit was less than the high-food side.

Answer 1

The fish dispersed from the high-food side to the low-food side in the experiment because the low-food side increased in quality.

Step-by-step explanation:

The fish dispersed from the high-food side to the low-food side in the experiment because the low-food side increased in quality. This means that the low-food side became more beneficial for the fish in terms of per capita benefit. The fish are likely to move towards areas where they can obtain more resources and have a higher chance of survival.