Question

Which of the following statements are correct?
(i) Euglena divides by longitudinal binary fission
(ii) Cytokinesis takes place along transverse axis in paramecium.
(iii) Amoeba divides by irregular binary fission.
(iv) In multiple fission, parental body divides into many daughter cells under favourable conditions,

(A) (i) and (iv)
(B) only (iv)
(C) (i), (ii) and (iii)
(D) (ii) and (iv)

Answer 1

Hint: Euglena reproduces by longitudinal binary fission whereas on the other hand amoeba reproduces by irregular binary fission. In paramecium cytokinesis that is division of cytoplasm takes place along transverse axis.

Complete Step by Step Answer:
Amoebas use binary fission for asexual reproduction. A person splits into two daughter cells throughout this procedure. Both of these are genetically similar. Amoeba undergo cell division known as mitosis in order to replicate genetic material (the chromatin network) in the daughter cells. In unicellular creatures like amoebas, it is a type of asexual reproduction. Binary fission is the name given to the process.

Euglena is the longitudinal binary fission agent. Because the body splits into two half longitudinally during this type of binary fission, it is known as longitudinal binary fission. The cytoplasm, basal granules, chromatophores, and nucleus divide as a result of binary fission. The axis of cytokinesis in Paramecium runs perpendicular to the organism's longitudinal axis. Thus, the transverse fission of Paramecium is referred to. The proter, or front half, of the organism creates one organism, and the opisthe, or back half, creates another. Division of the cell body into an equal number of sections, each containing a nucleus, followed by the simultaneous or sequential division of the nucleus into a number of daughter nuclei.

So, option (C) is correct.

Note: Longitudinal binary fission: In this type of division, the plane of division follows the organism's longitudinal axis, as in the case of Euglena. Transverse binary fission: The transverse axis of the organism, such as the Paramecium, serves as the plane of division.