9Aa3 Inheritance 2

1
This diagram shows what happens during fertilisation.
Write down the missing words shown by the letters a–j.
Each letter may represent more  than one word.

2       Write a description of what happens during fertilisation.

3       a        Draw a labelled diagram of a sperm cell.

b        Explain how a sperm cell is adapted to its function.

4       a        Draw a labelled diagram of an egg cell.

b        Explain how an egg cell is adapted to its function.

5        a        How is the way in which the sex cells meet different in plants and animals? Explain in as much detail as you can.

b        What is the correct scientific term for a sex cell?

6       Find out how sperm and egg cells meet in:

a        cod

b        frogs.

 

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