MEDIUM
NEET
IMPORTANT
Earn 100
Read the given statements.
(i) Outer exine is made up of sporopollenin.
(ii) Inner intine is pecto-cellulosic in nature.
(iii) Generative cell is bigger and contains abundant food reserve.
(iv) Vegetative cell is small and floats in the cytoplasm of the generative cell.
Which of the given statements are not true regarding structure of pollen grain?
72.73% studentsanswered this correctly
Important Questions on Sexual Reproduction in Flowering Plants
EASY
NEET
IMPORTANT
Which cell of the pollen grains divides to form two male gametes?
EASY
NEET
IMPORTANT
The three cells found in a pollen grain when it is shed at -celled stage are
MEDIUM
NEET
IMPORTANT
In a fully developed male gametophyte the number of nuclei is-
MEDIUM
NEET
IMPORTANT
Refer to the given figure of reproductive structure of Papaver and identify X and Y.
EASY
NEET
IMPORTANT
Megasporangium along with its protective integuments is called
EASY
NEET
IMPORTANT
A typical angiospermous ovule is attached to the placenta by means of a stalk called X. Body of the ovule fuses with X in the region called Y. Identify X and Y.
| X | y | |
|---|---|---|
| (i) | Funicle | Hilum |
| (ii) | Hilum | Funicle |
| (iii) | Funicle | Micropyle |
| (iv) | Hilum | Chalaza |
MEDIUM
NEET
IMPORTANT
Identify the parts labelled A, B, C and D in the given figure and select the correct option.
MEDIUM
NEET
IMPORTANT
Match Column I with Column II and select the correct option from the given codes.
| Column I | Column II | ||
|---|---|---|---|
| Funicle | Mass of parenchymatous cells | ||
| Hilum | Basal part of ovule | ||
| Integument | one of two protective layers of ovule | ||
| Chalaza | Region where body of ovule fuses with funicle | ||
| Nucellus | Stalk of ovule |
