CBSE Class 10 Science 2020 Delhi Set 2

Question : 7 of 10

Marks: +1, -0

(a) List in tabular form two differences between binary fission and multiple fission.
(b) What happens when a mature Spirogyra filament attains considerable length.

Solution:

(a) The difference between binary fission and multiple fission is as follows:

S.No.	Binary Fission	Multiple Fission
1	Binary fission results in formation of two individuals from the single parent.	Multiple fission results in formation of many cells from a single parent.
2	It occurs in most of bacterium relay from binary fission for reproduction. For example; Amoeba reproduces through binary fission in which two daughter nuclei are formed from a single parent.	It occurs in few organisms and not only for reproduction but also to tide over unfavourable condition. For example : When a spirogyra filament attains considerable length, the filament breaks down into smaller pieces which grow up to a mature spirogyra. This process is called fragmentation.

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