Summer 2026 Predicted
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1 The diagram shows a human sperm cell and a human ovum.
(a) State two structural differences between a sperm cell and an ovum.
(2)
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, (b) For each difference stated in (a), explain how it is an adaptation for its role
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in fertilisation.
(4)
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(c) Describe the sequence of events that occurs from the sperm reaching the
ovum to the formation of a zygote.
(5)
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for more papers: tyrionpapers.com
Turn over
for more papers: tyrionpapers.com
, DO NOT WRITE IN THIS AREA
1 The diagram shows a human sperm cell and a human ovum.
(a) State two structural differences between a sperm cell and an ovum.
(2)
DO NOT WRITE IN THIS AREA
……………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………
for more papers: tyrionpapers.com
, (b) For each difference stated in (a), explain how it is an adaptation for its role
DO NOT WRITE IN THIS AREA
in fertilisation.
(4)
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……………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………
……………………………………………………………………………………………………………………………………
(c) Describe the sequence of events that occurs from the sperm reaching the
ovum to the formation of a zygote.
(5)
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……………………………………………………………………………………………………………………………………
DO NOT WRITE IN THIS AREA
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