Question

A. Multiple choice questions
1. Which gas is used by plants during respiration?
a) carbon dioxide
2. Animals do not depend on plants for
a) oxygen
c) sunlight
b) oxygen
c) nitrogen
d) all of these
d) shelter
c) carbon dioxide
d) pollination
b) food
3. Plants do not depend on animals for
a) making soil fertile b) oxygen
4. Which are the primary consumers?
b) decomposers
5. Which of these food chains is correct?
a) rabbit → mouse → plant
a) plants
c) carnivores
d) herbivores
c) mouse → tree → fox
b) plant → rabbit → fox
d) tree →lion → grain
Mark ✓ for true and * for false statements.
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Answer 1

Answer:

1.oxygen

aerobic respiration uses oxygen and produces carbon dioxide. photosynthesis uses carbon dioxide and produces oxygen.

2. b

3.a, b

4.Primary consumer

Image of Which are the primary consumers?

The organisms that eat the producers are the primary consumers. They tend to be small in size and there are many of them. The primary consumers are herbivores (vegetarians). The organisms that eat the primary consumers are meat eaters (carnivores) and are called the secondary consumers.

5.a