18 exam-style questions. Write your answer, check it against the mark scheme and tick the points you earned. Your marks stay on this device. Your writing is not saved.
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4.2 Fertilisation and the zygote
Exam question
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State what is meant by fertilisation.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
Exam question
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What is formed when two gametes fuse?
(1)Total for this question: 1 mark
4.2 Fertilisation and the zygote
Exam question
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Explain why gametes must be haploid.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
Exam question
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Describe what happens to the zygote after fertilisation.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
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A cat has 38 chromosomes in its body cells. Calculate the number of chromosomes in a cat sperm cell.
(2)Total for this question: 2 marks
4.2 Fertilisation and the zygote
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Explain why the zygote has the same number of chromosomes as body cells.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
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Explain why a sperm cell has many mitochondria.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
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Explain why an egg cell is much larger than a sperm cell.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
Exam question
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Describe the role of the acrosome of a sperm cell.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
Exam question
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Explain why only one sperm fertilises an egg.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
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Where does fertilisation usually happen in humans?
(1)Total for this question: 1 mark
4.2 Fertilisation and the zygote
Exam question
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Describe where fertilisation takes place in a flowering plant.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
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Explain why each zygote from the same parents is genetically different.
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Total for this question: 2 marks
4.2 Fertilisation and the zygote
Exam question
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State the name of the male gamete in a flowering plant.
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Total for this question: 1 mark
4.2 Fertilisation and the zygote
Exam question
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Compare a sperm cell and an egg cell.
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Total for this question: 2 marks
