Pretest

Question 1

What is an organism’s niche?

Revolt · Accepted Answer

C: the role that an organism plays in the environment

Question 2

Which describes a grizzly bear’s habitat?

Revolt · Accepted Answer

C: the physical area where the bear lives

Question 3

A rock is classified as

Revolt · Accepted Answer

A: nonliving and abiotic.

Question 4

Which principle states that two species in the same habitat cannot have the same niche?

Revolt · Accepted Answer

A: competitive exclusion principle

Question 5

The Phoenix area of the Southwestern desert typically receives 8 inches of precipitation yearly, in two seasonal patterns. Even though it is an arid region, it has high biological diversity. Thin-leaf trees abound, such as palo verde and desert ironwoods. Wide varieties of cactus thrive, including the cholla, prickly pear, and saguaro. Wildlife includes insects, reptiles, many bird species, small rodents, and other mammals. Which factor in the Southwestern desert ecosystem is abiotic?

Revolt · Accepted Answer

C: a rainstorm

Question 6

Which describes the habitat of a frog?

Revolt · Accepted Answer

C: marshes and ponds

Question 7

Which is a biotic factor?

Revolt · Accepted Answer

D: rotting carcass

Question 8

Which is biotic?

Revolt · Accepted Answer

C: leaf

Question 9

Why is a shell considered to be biotic?

Revolt · Accepted Answer

B: because it came from something living

Question 10

Which best describes a bird’s role as it eats seeds?

Revolt · Accepted Answer

C: niche

Pretest Answers

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