Class notes Class 12 Biology – Reproduction in Organisms

Class 12 Biology - Chapter 1: Reproduction in Organisms

Chapter Notes



Chapter Notes:

Reproduction is a biological process by which an organism produces offspring similar to itself.

Types of Reproduction:

1. Asexual Reproduction: Involves a single parent with or without the formation of gametes.

- Binary fission, budding, fragmentation, spore formation.

2. Sexual Reproduction: Involves the formation and fusion of gametes.

- Found in higher organisms; includes pre-fertilisation, fertilisation and post-fertilisation events.



Key Terms:

- Life span: The period from birth to the natural death of an organism.

- Juvenile Phase: Period of growth.

- Reproductive Phase: Period during which an organism can reproduce.

- Senescence: The period of aging after reproductive phase.



Multiple Choice Questions (MCQs)



Multiple Choice Questions (MCQs):



1. Which is a defining feature of living organisms?

a) Growth b) Reproduction c) Metabolism d) Consciousness

Answer: b) Reproduction



2. Which of the following reproduces by budding?

a) Amoeba b) Hydra c) Paramecium d) Euglena

Answer: b) Hydra



3. Banana is an example of:

a) Monocarpic plant b) Polycarpic plant