Eggs cell reproduction

 

1. ________represents the female reproductive organ in a flower.

1) Ovary

2) Pistil

3) Inflorescence

4) Gynoecium 

2. Which of the following is not a part of a pistil?

1) Stigma

2) Thalamus

3) Style

4) Placenta 

3. Which of the following have only one ovule in an ovary?

1) Papaya

2) Wheat

3) Orchid

4) Both 2 and 3

4. Multicarpellary syncarpous pistil is found in

1) Rose

2) Lotus

3) Michelia

4) Papaver 

5. The body of ovule fuses with funicle in a region called

1) Micropyle

2) Hilum

3) Chalaza

4) None of these

6. Which of the following is not true regarding the nucellus?

1) Diploid cells

2) Abundant reserve food material

3) Completely covered by integuments

4) A single MMC differentiates in the micropylar region of the nucellus.

7. In majority of flowering plants, _______ is/are functional while other megaspores degenerate.

1) 3 megaspores

2) 2 megaspores

3) 1 megaspore

4) 4 megaspores 

8. _________ of a female gametophyte bears antipodals

1) Chalazal end

2) Micropylar end

3) Central portion

4) None of the above 

9. Ploidy of the cells of nucellus, MMC, a megaspore and female gametophyte is respectively.

1) 2n, n, n, n

2) 2n, 2n, n, 2n

3) 2n, 2n, n, 3n

4) 2n, 2n, n, n

10. The functional megaspore undergoes _______ to form a typical embryo sac.

1) 2 mitotic divisions

2) 3 meiotic divisions

3) 3 mitotic divisions

4) 4 mitotic divisions

Q.no.  Answer

1          4

2          2

3.         2

4.         4

5.          2

6           3

7           3

8            1

9            4

10          3