Question

Differentiate between the processes of binary fission and budding.

Answer 1

In binary fission a parent cell divides into two small, identical and nearly equal sized separate daughter individuals.
In budding a new organism forms from a lateral outgrowth or an outgrowth from parent cell.

Fission occurs only in unicellular organisms eg:- Amoeba
Where as budding occurs in multicellular organisms and unicellular organisms eg:- yeast and hydra

In binary fission, the parent divides into two daughters so, in fission the identity of the parent is lost
Where as in budding the parent doesn't divide but produces one or more outgrowths to form new individuals ans so the identity of the parent is not lost.

In fission the nucleus divides first and then the cytoplasmic division takes place.
But in budding, the cellular outgrowth develops first followed by the nuclear division.

In fission cytoplasm is divided evenly and in a sequential order.
While in budding the cytoplasmic division is uneven.

Fission cannot be performed artificially.
While budding can be done artificially.

An image showing binary fission in amoeba and budding in hydra is attached


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Answer 2

Budding in unicellular organisms is slightly different from binary fission ( 1)The parent cell evaginates on one side for formation of a daughter before the division of the nucleus (2)the parent individual remains intact .It does not get distributed into two individuals but forms a daughter individual.