Organisms And Environment Worsksheets (Page 4 of 8) in pdf

Organisms And Environment Worsksheets Page 4

8. For which of the biotic factors are the fish and frog competing? (8.11B)

a. Water

b. Algae

c. Heron

d. Insect

9. Which of the following statements best describes the response of finches to a drought on

the Galapagos Islands? (8.11C)

a. During a drought, individual finches saw that large, hard seeds were the only

available food. To crack these harder seeds, individual finches grew their beaks

larger, resulting in an increased average beak depth.

b. During a drought, finches struggled to open harder seeds. All the scraping and

pecking wore down their beaks, resulting in a reduced average beak depth.

c. During a drought, only finches with larger-than-average beaks were able to crack

the hard seeds that were available. These finches survived while smaller-beaked

finches died, resulting in an increased average beak depth in the population.

d. During a drought, finches with smaller beaks (and smaller bodies) had an

advantage. With reduced food supplies, larger finches (with larger beaks) were

more likely to starve. The result was a decrease in average beak depth.

10. How will clear-cut logging, a short-term environmental change, affect organisms living in

the area? (8.11C)

a. Organisms will contribute to the environmental change

b. Organisms will genetically adapt as the trees are felled

c. Organisms will not be affected by the change

d. Organisms will die or migrate to another area

Organisms And Environment Worsksheets Page 4