Haploid, Diploid and Polyploid Cells

Q.

The number of chromosomes in a certain type of cell division is halved. This kind of cell division occurs in:

1. Only testis

2. Only ovary

3. Both ovary and testis

4. All body cells

Q. How many chromatids are there in a chromosome after S phase?

1. Three
2. Two
3. One
4. Four

Q.

Bouquet stage occurs during

1. Leptotene

2. Zygotene

3. Pachytene

4. Diplotene

Q.

Meiocyte of pea plant has 14 chromosomes, how many chromosomes will be there in the somatic cell of the pea plant?

1. 28

2. 14

3. 7

4. 56

Q. The diploid chromosome number for the house fly is 12. The haploid number of chromosomes found in their gametes would be ______

1. 1
2. 3
3. 6
4. 12

Q.

A secondary oocyte has a________ chromosome number while a fertilized ovum has_________ chromosome number.

Q. In humans, somatic cells are ___ in nature whereas gametes are ___ in nature

1. Haploid, Diploid
2. Diploid, Diploid
3. Diploid, Haploid
4. Haploid, Haploid

Q. The greater the complexity of the organism, the greater the number of chromosomes within the cell.

1. True
2. False

Q.

is there any organism with no RNA or DNA?

Q. If a diploid cell is treated with colchicine, then it becomes:

1. Triploid
2. Tetraploid
3. Diploid
4. Monoploid

Q.

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