Question

to study the binary fission in
amoeba & Budding
in Hydra​

Answer 1

Binary fission is the common method adopted by single-cell amoeba for cell division and reproduction. It is a method of asexual reproduction which produces two genetically identical amoeba cells from a single mature amoeba cell.

Budding is an asexual mode of producing new organisms. In this process, a new organism is developed from a small part of the parent’s body. A bud which is formed detaches to develop into a new organism. The newly developed organism remains attached as it grows further. It is separated from the parent organism when it gets matured by leaving scar tissues behind. As this is asexual reproduction, the newly developed organism is a replica of the parent and is genetically identical.

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Answer 2

Answer:

Fission in Amoeba:

✳️ This is commonly seen in single celled animals. There are no gametes or

fertilisation.

The cells divide many times through mitosis. Animals like Amoeba

reproduce in this manner.

Amoeba is a tiny unicellular organism that has a porous cell membrane, changes

its shape constantly and encloses the cell organelles.

The genetic material replicate through amitotic division, the cell divides into two equal sized daughter

cells.

The division of nucleus is called amitosis because the stages of a typical

mitotic division are not observed in Amoeba.

Karyokinesis: The division begins with the nucleus dividing to form two daughter nuclei by the process of karyokinesis.

Cytokinesis: Karyokinesis is followed by cytokinesis which is the division of cytoplasm in the mother cell.

Two daughter Amoebae cell having a nucleus and its

own cell organelles are formed.

Budding in Hydra

✳️Budding is an asexual method of reproduction. The process takes place as mentioned.

In Hydra first a small outgrown called bud is formed on the side of its body by repeated mitotic division of its cells.

This bud than grows gradually to form a small Hydra by developing a mouth and tentacles.

Finally this new Hydra detaches itself from the body of parent Hydra and lives as a separate organism.

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