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Earn 100

What is not correct about mitosis?
(a)Usually restricted to the diploid cells and haploid cells of some social insects.
(b)Furrow extends centripetally and microfilament ring brings about cleavage in plant cells.
(c)Growth in multicellular organisms is a result of mitosis.
(d)Meristematic tissues show mitosis.

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Important Questions on Cell Division
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Reason (R): Mitosis divides a parent cell into two daughter cells

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i. Crossing over
ii. Synapsis
iii. Terminalisation of chiasmata
iv. Disappearance of the nucleolus

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I | II | ||
() | Synapsis aligns homologous chromosomes | () | Anaphase – II |
() | Synthesis of RNA and protein | () | Zygotene |
() | Action of enzyme recombinase | () | – phase |
() | Centromeres do not separate but chromatids move towards opposite poles | () | Anaphase – I |
() | Pachytene |

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Select the correct statements.
A. Tetrad formation is seen during the Leptotene.
B. During Anaphase, the centromeres split and chromatids separate.
C. Terminalization takes place during Pachytene.
D. Nucleolus, Golgi complex and ER are reformed during Telophase.
E. Crossing over takes place between sister chromatids of homologous chromosomes.
Choose the correct answer from the options given below:

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Column-I | Column–II | ||
a. | Pachytene | (i) | The pairing of homologous chromosomes |
b. | Metaphase I | (ii) | Terminalization of chiasmata |
c. | Diakinesis | (iii) | Crossing-over takes place |
d. | Zygotene | (iv) | Chromosomes align at the equatorial plate |

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