Question

(i) Draw a neat labeled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosome.
(ii) How many daughter cells are formed at the end of mitosis and at the end of meiosis?
(iii) With reference to cell division explain the following terms:
(Chromatid, Centromere, Haploid).
(iv) Name the type of cell division that occurs during:
1. Growth of shoot 2. Formation of pollen grains.
3. Repair of worn out tissues.

Answer 1

 (i)See diagram.

(ii) Mitosis: two daughter cells.
     Meiosis: four daughter oeils.
(iii) 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