Question

do not write
multiple choice (select the best answer and mark it correctly on your scantron sheet.)

1. plants need all of the following except:

a. light
b. minerals
c. water
d. high temperature

1. the study of organisms and their environment and how they interact is known as:

a. biology
b. chemistry
c. ecology
d. geology

1. organisms that break down dead organisms are called what?

a. niche
b. decomposers
c. autotroph
d. secondary consumers

1. the specific job or role of an organism in its ecosystem is called what?

a. heterotroph
b. habitat
c. autotroph
d. niche

1. the graph below shows what pattern of population growth?

a. explosive
b. logistical
c. boom and bust
d. exponential

Explanation:

1. Plants need light for photosynthesis, minerals for various physiological - processes, and water for many functions. High temperature is not a fundamental need for plants in the same sense as the others.
2. Ecology is the study of organisms and their environment and their interactions.
3. Decomposers break down dead organisms, recycling nutrients back into the ecosystem.
4. The specific job or role of an organism in its ecosystem is called its niche.
5. The graph shows a J - shaped curve, which is characteristic of exponential population growth where the population grows at an increasingly rapid rate over time.

Answer:

1. D. High Temperature
2. C. Ecology
3. B. Decomposers
4. D. Niche
5. D. Exponential