Question

1. Elephants eat berries and then deposit the seeds miles away in their droppings. Which is a logical conclusion about the geographic distributions of the berry plants and elephants?

A. Berry plants and elephants have similar geographic distributions.

B. Elephants’ geographic distribution is larger than berry plants’ geographic distribution.

C. Berry plants’ geographic distribution is larger than elephants’ geographic.

D. The geographic distribution of elephants is dependent on the plants’ geographic distribution

2. A species of bird eats insects. The longer its beak, the better it can reach insects in holes in trees. A disease affects the trees in the habitats of the insects. How might this change the frequency of the gene for a long beak?

A. The gene for long beaks will mutate.

B. The gene for long beaks will increase.

C. The gene for long beaks will decrease.

D. The gene for long beaks will not change.

Answer 1

1) The correct answer is-

C. Berry plants’ geographic distribution is larger than elephants’ geographic.

The berry plants make fruit which is eaten by elephants and then move their seeds to new locations by excretion. This helps in expanding the plant population.

This also helps in preventing seedlings from competing with their parents or suffering from any pathogens that may have accumulated in their home turf.

2) The correct answer is-

C. The gene for long beaks will decrease.

This is because the long beaks will no longer be advantageous to the birds to eat insects. Thus the frequency of genes for long beaks will decrease.