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Class 11
Botany :-NCERT Solutions - Cell cycle and cell division.

Question 1
What is the average cell cycle span for a mammalian cell?


Answer

Question 4
What is G0 (quiescent phase) of cell cycle?


Answer

Question 5
Why is mitosis called equational division?


Answer

Question 6
Name the stage of cell cycle at which one of the following events occur:
(i) Chromosomes are moved to spindle equator
(ii) Centromere splits and chromatids separate
(iii) Pairing between homologous chromosomes takes place
(iv) Crossing over between homologous chromosomes takes place


Answer

Question 7
Describe the following:
(a) synapsis
(b) bivalent
(c) chiasmata
Draw a diagram to illustrate your answer.


Answer

Question 8
How does cytokinesis in plant cells differ from that in animal cells?


Answer

Question 12
What is the significance of meiosis?


Answer

Question 14
Can there be mitosis without DNA replication in S phase


Answer

Question 15
Can there be DNA replication without cell division?


Answer

Question 16
Analyse the events during every stage of cell cycle and notice how the following two parameters change
(i) Number of chromosomes (N) per cell
(ii) Amount of DNA content (C) per cell


Answer

SET

NCERT Botany Class 11

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