Reproduction

1

Explain how, offspring and parents of organisms reproducing sexually have the same number of chromosomes.

2

Give an example of a flower which contains both stamens and carpels.

3

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?

4

What is vegetative propagation? State two advantages and two disadvantages of this method.

5

What is variation? How is variation created in a population? How does the creation of variation in a species promote survival?

6

Write one main difference between asexual and sexual mode of reproduction. Which species is likely to have comparatively better chances of survival - the one reproducing asexually or the one reproducing sexually? Give reason to justify your answer.

7

Describe in brief the structure and function of placenta?

8

Write the function of following parts in human female reproductive system:

  1. Ovary
  2. Oviduct
  3. Uterus