List any four steps involved in sexual reproduction and write its two advantages.

What are the advantages of sexual reproduction over asexual reproduction?

Why is variation beneficial to the species but not necessarily for the individual?

Name the parts A, B and C shown in the following diagram and state one function of each.

What is implantation? Where does it take place? Mention the structure involved and its function.

List three techniques that have been developed to prevent pregnancy. Which one of these techniques is not meant for males? How does the use of these techniques have a direct impact on the health and prosperity of a family?

How are the modes for reproduction different in unicellular and multicellular organisms?

State one reason why cross-pollination is preferred over self-pollination.

How can the reproductive health be maintained and sexually transmitted disease (STDs) be prevented?

What happens when:

1. Accidently, Planaria gets cut into many pieces?
2. Bryophyllum leaf falls on the wet soil?
3. On maturation sporangia of Rhizopus bursts?