Ecology (Exam Questions)

Question 1

What is meant by pollution

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Question 2

Give an example of human activity that results in the pollution of air or water
Suggest a means of counteracting this pollution

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Question 3

Explain conservation in relation to plants and animals

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Question 4

Suggest two reasons for conserving wild species

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Question 5

State one conservation practice from agriculture or fisheries or forestry

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Question 6

Explain the following terms that are used in biology

Biosphere, Habitat, Niche

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Question 7

Distinguish between abiotic and biotic factors

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Question 8

Name an ecosystem you have studied and give an example of an abiotic factor that influences the distribution of a named plant in the ecosystem

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Question 9

In the case of your named ecosystem give an example of a biotic factor that influences the distribution of a named plant or animal

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Question 10

What is meant b y pyramid of numbers

Construct a pyramid of numbers

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Question 11

What is the term used by ecologists to describe the organisms that form the base of the pyramid

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Question 12

Population graph

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Question 13

What is a predator

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Question 14

Suggest two factors other than predation that might account for the decline of population according to the graph

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Question 15

suggest two factors that are responsible for the regular increase in population in relation to the graph

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Question 16

What does an ecologist mean by competition

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Question 17

Competition is usually more intense between numbers of the same species than between members of different species.
Comment on the validity of this statement

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Question 18

What is the biosphere

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Question 19

What is meant by a qualitative survey

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Question 20

construct a grazing food chain (4 trophic levels)

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Question 21

Identify the following in your food chain:
A Predator
A Producer
A Secondary consumer
A Primary consumer

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Question 22

Explain what is meant by pollution

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Question 23

give an account of the effects of a named pollutant of domestic, agricultural or industrial origin
Describe one way in which the pollution that you have indicated above might be controlled

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Question 24

Outline the problems associated with the disposal of waste

Suggest two ways of minimising waste

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Question 25

In ecology what is meant by a trophic level

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Question 26

Complete a pyramid of numbers diagram

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Question 27

Explain the following terms

Niche, Edaphic factor, Symbiosis

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Question 28

What is the function of the nitrogen cycle

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Question 29

What is meant by nitrogen fixation

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Question 30

what is meant by nitrification

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Question 31

Describe using words and/or labelled diagrams, the events of the nitrogen cycle

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Question 32

What term do ecologists use to describe an animal which kills and eats other animals

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Question 33

what term is used to describe an animal that is killed and eaten

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Question 34

If the population of prey declines suggest two possible consequences for predators

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Question 35

give four factors that influence size of the human population

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Question 36

What does an ecologist mean by competition

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Question 37

Distinguish clearly between contest and scramble competition

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