Energy Flow MCQ

Name : ___KERIE THAM____________ ( 22 )
Class: __4/8__

Date: ___24/03___ Topic: Energy Flow, Food Chains & Food Webs

Multiple Choice Questions (10 Marks)

Write your answers in the boxes below:
1
2
3
4
5
6
7
8
9
10
B
B
C
C
A
A
A
D
B
B

1 Which of the following describes the flow of energy in an ecosystem?

A heat energy chemical energy light energy B heat energy light energy chemical energy C light energy chemical energy heat energy D light energy heat energy chemical energy

2 The diagram shows losses from a rat to the environment. Which of the following will not be returned to the ecosystem and recycled?

A carbon dioxide B heat energy C salts D urea

3 The diagram shows the flow of energy through an ecosystem.

Which arrows represent the smallest amount of energy transferred between organisms, and the largest amount of energy lost to the ecosystem?

smallest energy transfer largest energy loss
A
B
C
D
1
1
2
2
3
5
3
4

4 The diagram shows four food chains leading to humans. Which chains make the most efficient use of solar energy?

A 1 and 2 B 1 and 4 C 2 and 3 D 2 and 4

5 The following diagram represents the flow of materials within a balanced ecosystem. The boxes represent various trophic levels. Which box represents herbivores?

6 The following diagram represents part of a food web for a fresh pond. Which organism is a primary consumer?

A pond snails B pondweed C water beetles D water mites

7 The diagram below represents a food web.

If producer 1 is suddenly completely wiped out by disease, what would be the most likely effect on the other organisms in the web?

A 4, 5 and 6 would be reduced in numbers; no organism would be likely to die out.
B 4, 5 and 6 would die out, 8, 9 and 10 would be reduced in