Binary Fission: Different Types of Binary Fission, Irregular Binary Fission (For CBSE, ICSE, IAS, NET, NRA 2022)

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Different Types of Binary Fission

Irregular Binary Fission

  • Cytokinesis (the division of the cytoplasm) occurs along a plane perpendicular to that of Karyokinesis.
  • The plane of cytokinesis is always perpendicular to plane on which Karyokinesis occurred.
  • Karyokinesis is the division of a cell nucleus during mitosis.

Longitudinal Binary Fission

  • It is a type of mitosis.
  • Here fission/cytokinesis occurs along a longitudinal axis.

Oblique Binary Fission

It is a type of fission that has no occurrence.

Transverse Binary Fission

In this case cytokinesis occurs along the transverse axis.

Different Types of Binary Fission

Differences between Binary Fission and Multiple Fission

Difference between Binary Fission and Multiple Fission
Binary fissionMultiple fission
Division is only once.There is a repetitive division.
It includes definite pattern of division.It has no definite pattern of division.
It occurs only during favorable conditions.It occurs during unfavorable conditions as well.
Both the Nucleus and cytoplasm divide simultaneously.Nucleus division is followed by the cytoplasm.
Examples are Amoeba, Bacteria, Euglena, etc.Examples are Plasmodium, Sporozoans, Algae, etc.


Q 1. Where we can find amoeba?


Amoeba can be found on decaying bottom vegetation of freshwater streams and ponds.

Q 2. List the names of some of the prokaryotes in which binary fission is common.


Binary fission is common among prokaryotes, e. g. archaea, eubacteria, cyanobacteria, and certain protozoans (e. g. amoeba) .

Q 3. What are the different types of Binary fission?


Different types of Binary fission are:

1. Simple Binary fission

2. Longitudinal Binary fission

3. Oblique Binary fission

4. Transverse Binary fission