Chromosome Number in Meiocytes

Q. Endosperm cell of an angiosperm has 24 chromosomes. The number of chromosomes in the zygote and gametes would be____ and ___ respectively.

1. 24 and 12
2. 24 and 8
3. 16 and 12
4. 16 and 8

Q. If the meiocyte of an organism has 24 chromosomes then how many chromosomes will be present in its gamete cell?

1. 24
2. 48
3. 23
4. 12

Q. If chromosome number in a gamete of an apple plant cell is 17, then what would be number of chromosomes in the meiocyte of that plant?

1. 17
2. 34
3. 68
4. 51

Q.

The number of chromosome in pollen grain is 16, then the number of chromosome in guard cell will be:

1. 32

2. 8

3. 16

4. 24

Q.

Match the following related to chromosome number.

$\begin{array}{cc}Column-I& Column-II\\ \left(i\right).EggcellofApple& \left(a\right)12\\ \left(ii\right).MeiocyteofMaize& \left(b\right)17\\ \left(iii\right).MalegameteofRice& \left(c\right)48\\ \left(iv\right).PMCofPotato& \left(d\right)20\end{array}$

1. (i)-4, (ii)-3, (iii)-2, (iv)-1

2. (i)-1, (ii)-2, (iii)-3, (iv)-4

3. (i)-2, (ii)-4, (iii)-3, (iv)-1

4. (i)-2, (ii)-4, (iii)-1, (iv)-3

Q.

Give reason-gametes have a haploid number of chromosomes.

Q. If the meiocyte of an organism has 24 chromosomes then how many chromosomes will be present in its gamete cell?

1. 24
2. 12
3. 48
4. 23

Q.

What is the ploidy of cells of root tip and shoot tip ?

Q.

The number of chromosomes in somatic cells of Haplopappus is 4. So the number of chromosomes in the gamete cell will be = ?

1. 1

2. 2

3. 4

4. 16

Q. Fill in the following blanks with suitable words :

(d) A human gamete contains ......................... chromosomes whereas a normal body cell has ..................... chromosomes in it.

Q.

The number of chromosomes in somatic cells of Haplopappus is 4. So the number of chromosomes in the gamete cell will be = ?

1. 1

2. 2

3. 4

4. 16

Q. The male gametes of rice plant have $12$ chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, _________ respectively.

1. $12,24,12$
2. $24,12,24$
3. $12,24,24$
4. $24,12,12$

Q. Complete the missing links.
Each microspore mother cell has a number of chromosomes and therefore is .

Q.

The number of chromosome in pollen grain is 16, then the number of chromosome in guard cell will be:

1. 32

2. 8

3. 16

4. 24

Q. In a hexaploid wheat, the haploid(n), basis (x) number of chromosomes in monosomy(M) are?

Q. Choose the correct option.
$\begin{array}{ccc}\text{Organism}& \text{Chromosome number in meiocyte}& \text{Chromosome number in gamete}\\ \text{Housefly}& A& \text{06}\\ \text{Cat}& \text{38}& B\\ \text{Rice}& \text{24}& C\end{array}$

1. A-6, B-19, C-23
2. A-12, B-38, C-12
3. A-11, B-19, C-24
4. A-12, B-19, C-12

Q. Chromosome number in meiocyte of housefly is?

1. $8$
2. $12$
3. $21$
4. $23$
5. $34$

Q. If the leaf tip cells posses 14 chromosomes that how many chromosomes will be present in the endosperm of Pisum satium?

1. 7
2. 14
3. 21
4. 28

Q. Which of the following pair has haploid structures?

1. Nucellus and antipodal cells
2. Antipodal cells and egg cell
3. Antipodal cells and megaspore mother cell
4. Nucellus and primary endosperm nucleus

Q. If the chromosome number in the somatic cell of gymnosperm is 8. Then the number of chromosomes in the nucellus of $Cycas$ is ..........

1. 8
2. 4
3. 16
4. 32

Q. Choose the correct option.
$\begin{array}{ccc}\text{Organism}& \text{Chromosome number in meiocyte}& \text{Chromosome number in gamete}\\ \text{Housefly}& A& \text{06}\\ \text{Cat}& \text{38}& B\\ \text{Rice}& \text{24}& C\end{array}$

1. A-6, B-19, C-23
2. A-12, B-38, C-12
3. A-11, B-19, C-24
4. A-12, B-19, C-12

Q.

Match the following related to chromosome number.

$\begin{array}{cc}Column-I& Column-II\\ \left(i\right).EggcellofApple& \left(a\right)12\\ \left(ii\right).MeiocyteofMaize& \left(b\right)17\\ \left(iii\right).MalegameteofRice& \left(c\right)48\\ \left(iv\right).PMCofPotato& \left(d\right)20\end{array}$

1. (i)-(b), (ii)-(d), (iii)-(c), (iv)-(a)

2. (i)-(b), (ii)-(d), (iii)-(a), (iv)-(c)

3. (i)-(a), (ii)-(b), (iii)-(c), (iv)-(d)

4. (i)-(d), (ii)-(c), (iii)-(b), (iv)-(a)

Q. Enlist any two Y-linked characters in human beings.

Q. Chromosome number in pollen grain is $6$. What shall be it's number in leaf tip cells.

1. $6$
2. $12$
3. $24$
4. $3$

Q. The number of chromosomes in leaf tip cell of a plant is 6. The number of chromosomes in each of the cell of its pollen tetrad would be

1. 3
2. 6
3. 12
4. 24

Q. Which pair has haploid nature?

1. Nucellus and antipodal cells
2. Egg nucleus and secondary nucleus
3. Egg cell and antipodal cells
4. Megaspore mother cell and antipodal cells

Q.

Meiosis takes place in:

1. Meiocyte

2. Conidia

3. Gemmule

4. Megaspore

Q. Somatic chromosome number is 40. What shall be chromosome number in the cells of seminiferous tubule?

1. 40
2. 20
3. 10
4. 40 and 20

Q. Male nucleus of flowering plant fuses with the egg nucleus in

1. Promitotic phase
2. Mitotic phase
3. Intermediate state
4. All the above

Q.

The number of chromosomes in somatic cells of Haplopappus is 4. So the number of chromosomes in the gamete cell will be = ?

1. 1

2. 2

3. 4

4. 16