The diagram shows a male human gamete. nucleus. The diagram below shows the male reproductive system and associated organs.

1. (a)(i)State the name of the male human gamete.[1]
2. (a)(ii)Label with a letter X on the diagram where the male gametes are produced.[1]
3. (a)(iii)The nucleus of the male gamete is different from the nuclei of other types of cell found at location X. State the cause of this difference and explain its importance in reproduction. cause of difference explanation[3]
4. (b)Describe the differences in size and mobility between the male human gamete and the female human gamete.[2]
5. (c)Complete the paragraph by writing the most appropriate word in each of the spaces. The fusion of a male human gamete and a female human gamete to form a ............................................ is called ............................................. A ball of cells is then formed that becomes implanted in the wall of the .............................................[3]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.