CBSE Class 10 Science 2019 · Paper 31/4/1 · Question 27
List two observations on the basis of which it may be concluded that the given slide shows binary fission in Amoeba.
Answer
The nucleus is elongated or has divided into two, and a constriction across the middle divides the cell into two nearly equal halves.
(1) The nucleus is elongated (dumb-bell shaped) and dividing into two, or two nuclei are seen in one cell.
(2) A constriction appears in the cell membrane and cytoplasm across the middle of the cell, dividing it into two nearly equal halves, each with a nucleus.
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