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Ecology Review

Authored by Susan Nolan

Science

9th Grade

Used 3+ times

Ecology Review
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18 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which factor would have the greatest effect on the flow of energy into an ecosystem?

a large increase in the number of carnivores

a small increase in the number of decomposers

a small decrease in the amount of minerals available

a large decrease 

in the amount of 

sunlight available

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Dumping raw sewage into a river will lead to a reduction in dissolved oxygen in the water. What will this reduction most likely cause?

an increase in fish populations

a decrease in 

most aquatic 

animal 

populations

an increase in acid rain

a decrease in water temperature

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which list includes only abiotic factors?

soil, water, air, and sunlight

ducks, fish, soil, and water

humidity, temperature, rodents, and grasses

trees, flowering plants, mosses, and ferns

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Abiotic factors that affect the growth of grass in a lawn include

bacteria and soil

earthworms and nutrients

moisture and 

minerals

fertilizer and decomposers

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the abiotic factors that characterize a forest ecosystem?

light and biodiversity

temperature and amount of 

available water

types of procedures and decomposers

pH and number of heterotrophs

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An abiotic factor affecting the behavior and survival of such organisms as robins and violets is the

population of rabbits

length of daylight

presence of harmful bacteria

number of herbivores

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A group of organisms within a given area capable of interbreeding and producing fertile offspring under natural conditions is called

an ecosystem

a community

a food web

a population

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