Class 12 Biology
Chapter 1 – Reproduction in Organisms (Short
Notes)
1. Reproduction
Reproduction is the biological process by which organisms produce
new individuals of the same species.
Importance
Continuity of species
Transfer of genetic information
Variation in population
2. Life Span
Life span is the period from birth to natural death of an organism.
Examples
Butterfly – 1 to 2 weeks
Dog – 10 to 15 years
Banyan tree – hundreds of years
3. Types of Reproduction
Asexual Reproduction
In this method only one parent is involved and gametes are not
formed.
Characteristics
Fast process
Chapter 1 – Reproduction in Organisms (Short
Notes)
1. Reproduction
Reproduction is the biological process by which organisms produce
new individuals of the same species.
Importance
Continuity of species
Transfer of genetic information
Variation in population
2. Life Span
Life span is the period from birth to natural death of an organism.
Examples
Butterfly – 1 to 2 weeks
Dog – 10 to 15 years
Banyan tree – hundreds of years
3. Types of Reproduction
Asexual Reproduction
In this method only one parent is involved and gametes are not
formed.
Characteristics
Fast process
