Question

Explain Transverse binary fission in paramecium?

Answer 1

Explanation:

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Binary fission is an asexual mode of reproduction in which the bacteria divides into two equal halves. ... Binary fission in paramecium is transverse binary fission as the constriction occurs transversely. The process starts with the duplication of genetic contents of a parent cell by the process of replication.

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Answer 2

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1) During favourable conditions , paramecium stops feeding after attaining its maximum growth .

2) At first the micronucleus divides by mitosis and the macronucleus divides into two daughter nuclei by amitosis .

3) The oral groove disappears . After karyokinesis , a transverse construction appears in the middle of the body which deepens and divided the parent cell into two daughter individuals , the anterior proter and the posterior opisthe .

4) The proter receives the anterior contractile vacuole , cytopharynx and cytostome from its parent individual .

5) It develops posterior contractile vacuole and a new oral groove .

6) The opisthe receives the posterior contractile vacuole of its parent .

7) It develops a new anterior contractile vacuole , cytopharynx , cytostome and new oral groove .

8) Binary fission is completed in almost two hours .

9) In favourable conditions and paramecium can produce four generations of daughter individuals by binary fission in a day .

10) The transverse binary fission is also called homothetogenic fission because the plane of fission is at right angles to the longitudinal axis of the body .

11) The plane of fission occurs at right angles to the kineties , it is also perkinetal fission .