WAEC Biology questions: Ecology

33 questions with answers and explanations. Tap an option to check yourself.

All topics Cell structure and organisation · 26 Cellular activities · 24 Co-ordination and control · 27 Ecology · 33 Evolution · 18 Excretion · 22 Growth · 18 Heredity and variation · 24 Nutrition · 30 Reproduction · 29 Respiration · 25 Support and movement · 22 Transport · 27 Variety of organisms · 28

Question 21· Ecology· WAEC
Bacteria that convert nitrates in the soil to nitrogen gas carry out
Explanation and discussion
Question 22· Ecology· WAEC
The instrument used to measure rainfall is the
Explanation and discussion
Question 23· Ecology· WAEC
Mangrove plants are adapted to waterlogged soils by having
Explanation and discussion
Question 24· Ecology· WAEC
Which instrument measures relative humidity?
Explanation and discussion
Question 25· Ecology· WAEC
In the food chain grass → grasshopper → lizard → hawk, the secondary consumer is the
Explanation and discussion
Question 26· Ecology· WAEC
Only about 10% of energy passes from one trophic level to the next because
Explanation and discussion
Question 27· Ecology· WAEC
The nitrogen-fixing bacteria found in the root nodules of legumes are
Explanation and discussion
Question 28· Ecology· WAEC
The role of decomposers in an ecosystem is to
Explanation and discussion
Question 29· Ecology· WAEC
An instrument used to measure relative humidity in an ecological study is the
Explanation and discussion
Question 30· Ecology· WAEC
Cattle egrets feed on insects disturbed by grazing cattle, which are not affected. This relationship is
Explanation and discussion
Question 31· Ecology· WAEC
In the food chain grass → goat → man, man occupies the position of
Explanation and discussion
Question 32· Ecology· WAEC
Energy is lost at each step of a food chain mainly as
Explanation and discussion
Question 33· Ecology· WAEC
The relationship between a remora fish and a shark, where one benefits and the other is unaffected, is
Explanation and discussion

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WAEC Biology questions: Ecology

Bacteria that convert nitrates in the soil to nitrogen gas carry out

The instrument used to measure rainfall is the

Mangrove plants are adapted to waterlogged soils by having

Which instrument measures relative humidity?

In the food chain grass → grasshopper → lizard → hawk, the secondary consumer is the

Only about 10% of energy passes from one trophic level to the next because

The nitrogen-fixing bacteria found in the root nodules of legumes are

The role of decomposers in an ecosystem is to

An instrument used to measure relative humidity in an ecological study is the

Cattle egrets feed on insects disturbed by grazing cattle, which are not affected. This relationship is

In the food chain grass → goat → man, man occupies the position of

Energy is lost at each step of a food chain mainly as

The relationship between a remora fish and a shark, where one benefits and the other is unaffected, is