JAMB Biology questions: Ecology

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

All topics Cell structure and organisation · 30 Cellular activities · 32 Co-ordination and control · 31 Ecology · 38 Evolution · 27 Excretion · 30 Growth · 27 Heredity and variation · 36 Nutrition · 34 Reproduction · 33 Respiration · 30 Support and movement · 28 Transport · 30 Variety of organisms · 32

Question 21· Ecology· JAMB
An edaphic factor is a factor related to the
Explanation and discussion
Question 22· Ecology· JAMB
A pyramid of numbers may be inverted when
Explanation and discussion
Question 23· Ecology· JAMB
Which of the following is a biotic factor in an ecosystem?
Explanation and discussion
Question 24· Ecology· JAMB
In the food chain grass → grasshopper → frog → snake → hawk, the hawk is at the
Explanation and discussion
Question 25· Ecology· JAMB
A food web is
Explanation and discussion
Question 26· Ecology· JAMB
The place where an organism lives is its
Explanation and discussion
Question 27· Ecology· JAMB
An anemometer is used to measure
Explanation and discussion
Question 28· Ecology· JAMB
Carbon returns to the atmosphere mainly through
Explanation and discussion
Question 29· Ecology· JAMB
200 plants of a species are counted in an area of 50 m². Find the population density.
Explanation and discussion
Question 30· Ecology· JAMB
A major effect of deforestation is
Explanation and discussion
Question 31· Ecology· JAMB
Which Nigerian biome has the greatest variety of species?
Explanation and discussion
Question 32· Ecology· JAMB
Nitrogen-fixing bacteria are found in the root nodules of
Explanation and discussion
Question 33· Ecology· JAMB
An organism's niche is
Explanation and discussion
Question 34· Ecology· JAMB
In the carbon cycle, carbon(IV) oxide is removed from the atmosphere by
Explanation and discussion
Question 35· Ecology· JAMB
In the food chain phytoplankton → small fish → large fish → man, which organism is at the third trophic level?
Explanation and discussion
Question 36· Ecology· JAMB
The first organisms to colonise bare rock during ecological succession are usually
Explanation and discussion
Question 37· Ecology· JAMB
Only about 10% of the energy at one trophic level passes to the next because most of it is
Explanation and discussion
Question 38· Ecology· JAMB
Several food chains linked together in an ecosystem make up a
Explanation and discussion

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JAMB Biology questions: Ecology

An edaphic factor is a factor related to the

A pyramid of numbers may be inverted when

Which of the following is a biotic factor in an ecosystem?

In the food chain grass → grasshopper → frog → snake → hawk, the hawk is at the

A food web is

The place where an organism lives is its

An anemometer is used to measure

Carbon returns to the atmosphere mainly through

200 plants of a species are counted in an area of 50 m². Find the population density.

A major effect of deforestation is

Which Nigerian biome has the greatest variety of species?

Nitrogen-fixing bacteria are found in the root nodules of

An organism's niche is

In the carbon cycle, carbon(IV) oxide is removed from the atmosphere by

In the food chain phytoplankton → small fish → large fish → man, which organism is at the third trophic level?

The first organisms to colonise bare rock during ecological succession are usually

Only about 10% of the energy at one trophic level passes to the next because most of it is

Several food chains linked together in an ecosystem make up a