Question

Study the given figures representing the process of binary fission in Amoeba.
Arrange the figures in the correct sequence and select the correct answer.

(iv)→(iii)→(i)→(ii)→(v)
(iii)→(iv)→(i)→(ii)→(v)
(iii)→(v)→(ii)→(iv)→(i)
(iv)→(iii)→(ii)→(v)→(i)

Answer 1

Hint: Binary fission is the division into two or more components of a single unit and the regeneration into different entities of those parts that fit the original. The object undergoing fission is usually a cell, but the term may also apply to how individuals, bodies, populations, or organisms split into separate components. Amoeba is a single-cell organism and, much like bacteria, it reproduces by binary fission.

Complete answer:
Binary Fission in amoeba occurs in the following way:

The binary fission mechanism for cell division and reproduction is used by most single-celled species. These involve paramoecium, amoeba, and eventually bacteria. Amoeba consists of one parent in binary fission which forms the 2 cells of the daughter. The amoeba cell, first, is subjected to nuclear division and replicates into two nuclei. The two nuclei in the parent cell divide and pass in opposite directions. In preparation for binary fission, the cell then generates proteins and nutrients. The cell divides and forms 2 daughter cells in the stage of binary fission.
Irregular binary fission occurs in amoeba. The cytoplasm division plane is complex, but the elongated dividing nucleus is always at the right angle.
In this, intranuclear(closed) mitosis separates the replicated chromosomes, and the nucleus divides by furrowing. Then the cytoplasm gradually constricts between the two nuclei that separate, finally becoming two daughter individuals of similar size, each with a nucleus.

Therefore, the right answer is C-(iii)→(v)→(ii)→(iv)→(i).

Note: The two nuclei separate and move in opposite directions in the parent cell during binary fission. Generally, when environmental conditions are most favorable, this process of binary fission occurs. That is when there is enough food available, water, and a favorable temperature.