Distinguish between pollination and fertilisation. Mention the site and product of fertilization in a flower.

Draw a neat, labelled diagram of a pistil showing pollen tube growth and its entry into the ovule.

What is reproduction? Explain two advantages of sexual reproduction over asexual reproduction.

Describe sexually transmitted diseases and mention the ways to prevent them.

What is menstrual cycle? Describe different changes during the menstrual cycle occurring in a woman.

Why is meiosis needed in species that reproduce sexually?