JAMB and WAEC Biology questions

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

All topics Cell structure and organisation · 56 Cellular activities · 56 Co-ordination and control · 58 Ecology · 71 Evolution · 45 Excretion · 52 Growth · 45 Heredity and variation · 60 Nutrition · 64 Reproduction · 62 Respiration · 55 Support and movement · 50 Transport · 57 Variety of organisms · 60

Question 521· Reproduction· JAMB
Insect-pollinated flowers usually have
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Answer: B. brightly coloured petals and nectar
Explanation and discussion
Question 522· Reproduction· WAEC
Identical twins are formed when
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Answer: D. one fertilised egg splits into two
Explanation and discussion
Question 523· Reproduction· WAEC
Maize flowers are wind-pollinated. A feature that helps this is
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Answer: A. light, dry pollen produced in large amounts
Explanation and discussion
Question 524· Reproduction· JAMB
An advantage of cross-pollination over self-pollination is that it
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Answer: B. produces greater genetic variation
Explanation and discussion
Question 525· Reproduction· WAEC
After fertilisation, the ovule becomes the
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Answer: D. seed
Explanation and discussion
Question 526· Reproduction· JAMB
Fertilisation in humans normally takes place in the:
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Answer: D. oviduct (Fallopian tube)
Explanation and discussion
Question 527· Reproduction· JAMB
Seeds with wings or feathery hairs are usually dispersed by
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Answer: D. wind
Explanation and discussion
Question 528· Reproduction· WAEC
After fertilisation, the part of a flower that becomes the fruit is the
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Answer: D. ovary
Explanation and discussion
Question 529· Reproduction· JAMB
Flowers pollinated by wind usually have
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Answer: A. feathery stigmas and light, smooth pollen
Explanation and discussion
Question 530· Reproduction· JAMB
In the flower shown, the part labelled C develops into the
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Answer: D. fruit
Explanation and discussion
Question 531· Reproduction· JAMB
The hormone that maintains pregnancy is
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Answer: D. progesterone
Explanation and discussion
Question 532· 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 533· Reproduction· WAEC
After fertilisation, the ovary develops into the
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Answer: D. fruit
Explanation and discussion
Question 534· Reproduction· WAEC
The male gamete of a flowering plant is formed in the
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Answer: B. pollen grain
Explanation and discussion
Question 535· Reproduction· WAEC
Ovulation in a 28-day menstrual cycle usually occurs around day
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Answer: A. 14
Explanation and discussion
Question 536· 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 537· Reproduction· JAMB
The average length of the human menstrual cycle is about
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Answer: C. 28 days
Explanation and discussion
Question 538· Reproduction· WAEC
The transfer of pollen grains from the anther to the stigma is
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Answer: A. pollination
Explanation and discussion
Question 539· Reproduction· JAMB
The part of a flower that receives pollen grains is the
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Answer: B. stigma
Explanation and discussion
Question 540· Reproduction· WAEC
After ovulation, the human egg passes towards the uterus along the
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Answer: A. oviduct
Explanation and discussion

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JAMB and WAEC Biology questions

Insect-pollinated flowers usually have

Identical twins are formed when

Maize flowers are wind-pollinated. A feature that helps this is

An advantage of cross-pollination over self-pollination is that it

After fertilisation, the ovule becomes the

Fertilisation in humans normally takes place in the:

Seeds with wings or feathery hairs are usually dispersed by

After fertilisation, the part of a flower that becomes the fruit is the

Flowers pollinated by wind usually have

In the flower shown, the part labelled C develops into the

The hormone that maintains pregnancy is

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

After fertilisation, the ovary develops into the

The male gamete of a flowering plant is formed in the

Ovulation in a 28-day menstrual cycle usually occurs around day

Menstruation occurs when

The average length of the human menstrual cycle is about

The transfer of pollen grains from the anther to the stigma is

The part of a flower that receives pollen grains is the

After ovulation, the human egg passes towards the uterus along the