Define asexual reproduction. Describe two methods of asexual reproduction in animals.

 

Answer

Reproduction of new organisms from a single parent , without the involvement of sex cells is called asexual reproduction

The offsprings produced are exact copies of their parents.

Examples - Amoeba,Hydra



Different Methods of Asexual Reproduction

 

Binary Fission

In Binary Fission,organism reproduces by dividing itself into 2 parts

Example

Amoeba splits itself to form new amoeba

Procedure

  1. A fully grown amoeba is a cell which has nucleus and cytoplasm
  2. Nucleus splits to form 2 nucleus
  3. Cytoplasm also divides
  4. 2 small amoeba formed

 

Image - fig 16 of lakhmir singh

 

Budding

It is a kind of asexual reproduction in which different buds or bulges develop into new organisms

 

Example

Hydra uses budding to reproduce

Procedure

  1. A bulge or bud develops on side of hydra
  2. Slowly it develops into new hydra
  3. This new hydra separates from the parent hydra to form new hydra

Image - hydra image, fig 17 lakhmir singh and fig 9.11 ncert combination

 

  1. Class 8
  2. Chapter 9 Class 8 - Reproduction In Animals

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.