Question

(iii) With reference to cell division explain the following
terms:
Chromatid, Centromere, Haploid.
(iv) Name the type of cell division that occurs during :
hibos (1) Growth of shoot.
(2) Formation of pollen grains.
(3) Repair of wornout tissues.
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Answer 1

hi .....


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Centromere.....2 chromosome are attached together by centromere

haploid ...... single ....(I e ....n )

IV ....

1* Mitosis
2* meiosis
3* mitosis

Answer 2

Answer:

Chromatid: Duplicated chromosomes consist of two identical strands, each of these is called a chromatid.

Centromere: It is the point at which the two chromatids remain attached. It is also the point of attachment for spindles.

Haploid: A cell having only one set of chromosomes is called haploid.

(iv) 1. Mitosis

2. Meiosis

3. Mitosis

Explanation: