Food Webs and Changes in Populations Quiz 24-25

Food Webs and Changes in Populations Quiz 24-25

7th Grade

20 Qs

quiz-placeholder

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Food Webs and Changes in Populations Quiz 24-25

Food Webs and Changes in Populations Quiz 24-25

Assessment

Quiz

Biology

7th Grade

Medium

NGSS
MS-LS2-3, MS-LS1-6

Standards-aligned

Created by

Cari Thompson

Used 5+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A farmer had an accident and spilled a chemical into his pond. Several days later, he noticed many dead frogs around the pond. That summer, the number of flies around the pond was higher than ever. This is because

the chemical doesn’t affect the populations of the pond

the frogs are limiting factors for the flies

the flies are a limiting factor for the frogs

the chemical is a limiting factor for the flies

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A scientist was studying a population of fish in a pond over a period of 10 years. He observed that the population increased each year for 3 years and then leveled off and stabilized for the rest of the study. The best explanation for this observation is that the population had

No predators

Limiting factors

Abundant resources

Natural hazards

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

These restrict populations from growing exponentially larger in ecosystems.

carrying capacity

limiting factor

population density

niche

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The maximum number of organisms that an ecosystem can support is known as ________.

changes in population

population density

energy pyramid

carrying capacity

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens to the population of an ecosystem if no limiting factors exist?

population remains the same

population decreases

population increases

population fluctuates

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

In the graph below where was the population growing the most?

days 1-7

days 9-17

days 21-27

days 29-35

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the carrying capacity in the graph to the right?

500

1000

400

800

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