JAMB Biology questions

438 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 301· Reproduction· JAMB
In flowering plants, the endosperm forms from the fusion of a male nucleus with the
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Answer: D. polar nuclei
Explanation and discussion
Question 302· Reproduction· JAMB
Menstruation occurs when
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Answer: B. the egg is not fertilised and the uterine lining breaks down
Explanation and discussion
Question 303· Reproduction· JAMB
The average length of the human menstrual cycle is about
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Answer: C. 28 days
Explanation and discussion
Question 304· Reproduction· JAMB
The part of a flower that receives pollen grains is the
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Answer: B. stigma
Explanation and discussion
Question 305· Reproduction· JAMB
Implantation is the
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Answer: D. attachment of the embryo to the wall of the uterus
Explanation and discussion
Question 306· Reproduction· JAMB
The umbilical cord
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Answer: A. connects the foetus to the placenta
Explanation and discussion
Question 307· Reproduction· JAMB
An animal that has both male and female reproductive organs, such as the earthworm, is described as
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Answer: C. hermaphrodite
Explanation and discussion
Question 308· Reproduction· JAMB
The hormone that maintains the lining of the uterus during pregnancy is
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Answer: D. progesterone
Explanation and discussion
Question 309· Reproduction· JAMB
Yeast reproduces asexually by
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Answer: B. budding
Explanation and discussion
Question 310· Reproduction· JAMB
Cassava is commonly propagated by
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Answer: A. stem cuttings
Explanation and discussion
Question 311· Reproduction· JAMB
The part of a sperm containing enzymes that help it penetrate the egg is the
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Answer: D. acrosome
Explanation and discussion
Question 312· Reproduction· JAMB
Animals that give birth to live young are described as
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Answer: D. viviparous
Explanation and discussion
Question 313· Reproduction· JAMB
Cross-pollination is encouraged when
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Answer: A. the stamens and stigmas of a flower ripen at different times
Explanation and discussion
Question 314· Reproduction· JAMB
After fertilisation, the seed develops from the
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Answer: B. ovule
Explanation and discussion
Question 315· Reproduction· JAMB
Budding is a method of asexual reproduction in
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Answer: C. yeast and Hydra
Explanation and discussion
Question 316· Reproduction· JAMB
Double fertilisation in flowering plants produces
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Answer: A. a zygote and a triploid endosperm nucleus
Explanation and discussion
Question 317· Reproduction· JAMB
In flowering plants, the transfer of pollen from anther to stigma is called:
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Answer: B. pollination
Explanation and discussion
Question 318· Reproduction· JAMB
In the flower shown, the part labelled B, where pollen grains are made, is the
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Answer: C. anther
Explanation and discussion
Question 319· Respiration· JAMB
Anaerobic respiration in yeast produces:
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Answer: B. ethanol and carbon dioxide
Explanation and discussion
Question 320· Respiration· JAMB
In flowering plants, gaseous exchange takes place mainly through
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Answer: A. stomata and lenticels
Explanation and discussion

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JAMB Biology questions

In flowering plants, the endosperm forms from the fusion of a male nucleus with the

Menstruation occurs when

The average length of the human menstrual cycle is about

The part of a flower that receives pollen grains is the

Implantation is the

The umbilical cord

An animal that has both male and female reproductive organs, such as the earthworm, is described as

The hormone that maintains the lining of the uterus during pregnancy is

Yeast reproduces asexually by

Cassava is commonly propagated by

The part of a sperm containing enzymes that help it penetrate the egg is the

Animals that give birth to live young are described as

Cross-pollination is encouraged when

After fertilisation, the seed develops from the

Budding is a method of asexual reproduction in

Double fertilisation in flowering plants produces

In flowering plants, the transfer of pollen from anther to stigma is called:

In the flower shown, the part labelled B, where pollen grains are made, is the

Anaerobic respiration in yeast produces:

In flowering plants, gaseous exchange takes place mainly through