NCERT Solutions for Class 8 Science Chapter 9
Important NCERT Questions
8th Chapter 9 Reproduction in Animals
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 6
Define asexual reproduction. Describe two methods of asexual reproduction in animals.
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Asexual reproduction is a mode of reproduction in which only one parent is involved to reproduce offspring. In asexual reproduction, the offsprings produced are exact copies of their parents.
It is generally observed in very small sized organisms. Binary fission, Budding, Fragmentation etc. are the examples of asexual reproduction.
• Budding: In this mode, a part of the organism starts bulging out. Slowly it grows and develops into a separate individual. Examples: Hydra, yeast.
• Binary Fission: It is a type of asexual reproduction in which a single cell divides into two halves. Organisms that reproduce through binary fission are bacteria and Amoeba.
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Asexual reproduction in animals involves the creation of new organisms without the need for gametes or the fusion of sex cells. Two methods are:
1. Budding: New organisms form as outgrowths from the parent. Once mature, the bud separates, becoming a genetically identical individual. For example, Hydra reproduces asexually through budding.
2. Regeneration: Certain animals regenerate lost body parts. In some cases, these parts can grow into new individuals. Starfish, for instance, can regenerate lost arms, each potentially developing into a new organism under suitable conditions.