Anemophily is wind pollination so the pollens have to be small, dry and unwettable to be carried by wind currents.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341976
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Vegetative cell is not damaged.
2 Contents of killed generative cell stimulate pollen growth
3 Laser beam stimulates growth of pollen tube
4 The region of emergence of pollen tube is not harmed.
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Each microspore divides by mitotic division making a smaller generative cell and a larger vegetative cell or tube cell. If generative cell is damaged then the normal pollen tube will be formed because pollen tube is formed by vegetative cell not by generative cell of microspore.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341977
The cell that divides to form two male nuclei in angiosperm is
1 Generative cell
2 Vegetative cell
3 Antheridial cell
4 Tube cell
Explanation:
Generative cell divides into two male gametes, if it has not divided already.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341978
In a pollen grain, large irregularly shaped nucleus is present in
1 Vegetative cell
2 Generative cell
3 Tube cell
4 None of these
Explanation:
During development of male gametophyte first division of cell is mitotic producing two unequal cells. i.e., larger vegetative cell and smaller generative cell. The vegetative cell forms pollen tube after pollination.
Anemophily is wind pollination so the pollens have to be small, dry and unwettable to be carried by wind currents.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341976
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Vegetative cell is not damaged.
2 Contents of killed generative cell stimulate pollen growth
3 Laser beam stimulates growth of pollen tube
4 The region of emergence of pollen tube is not harmed.
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Each microspore divides by mitotic division making a smaller generative cell and a larger vegetative cell or tube cell. If generative cell is damaged then the normal pollen tube will be formed because pollen tube is formed by vegetative cell not by generative cell of microspore.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341977
The cell that divides to form two male nuclei in angiosperm is
1 Generative cell
2 Vegetative cell
3 Antheridial cell
4 Tube cell
Explanation:
Generative cell divides into two male gametes, if it has not divided already.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341978
In a pollen grain, large irregularly shaped nucleus is present in
1 Vegetative cell
2 Generative cell
3 Tube cell
4 None of these
Explanation:
During development of male gametophyte first division of cell is mitotic producing two unequal cells. i.e., larger vegetative cell and smaller generative cell. The vegetative cell forms pollen tube after pollination.
Anemophily is wind pollination so the pollens have to be small, dry and unwettable to be carried by wind currents.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341976
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Vegetative cell is not damaged.
2 Contents of killed generative cell stimulate pollen growth
3 Laser beam stimulates growth of pollen tube
4 The region of emergence of pollen tube is not harmed.
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Each microspore divides by mitotic division making a smaller generative cell and a larger vegetative cell or tube cell. If generative cell is damaged then the normal pollen tube will be formed because pollen tube is formed by vegetative cell not by generative cell of microspore.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341977
The cell that divides to form two male nuclei in angiosperm is
1 Generative cell
2 Vegetative cell
3 Antheridial cell
4 Tube cell
Explanation:
Generative cell divides into two male gametes, if it has not divided already.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341978
In a pollen grain, large irregularly shaped nucleus is present in
1 Vegetative cell
2 Generative cell
3 Tube cell
4 None of these
Explanation:
During development of male gametophyte first division of cell is mitotic producing two unequal cells. i.e., larger vegetative cell and smaller generative cell. The vegetative cell forms pollen tube after pollination.
Anemophily is wind pollination so the pollens have to be small, dry and unwettable to be carried by wind currents.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341976
Generative cell was destroyed by laser but a normal pollen tube was still formed because
1 Vegetative cell is not damaged.
2 Contents of killed generative cell stimulate pollen growth
3 Laser beam stimulates growth of pollen tube
4 The region of emergence of pollen tube is not harmed.
Explanation:
Generative cell was destroyed by laser but a normal pollen tube was still formed because vegetative cell is not damaged. Each microspore divides by mitotic division making a smaller generative cell and a larger vegetative cell or tube cell. If generative cell is damaged then the normal pollen tube will be formed because pollen tube is formed by vegetative cell not by generative cell of microspore.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341977
The cell that divides to form two male nuclei in angiosperm is
1 Generative cell
2 Vegetative cell
3 Antheridial cell
4 Tube cell
Explanation:
Generative cell divides into two male gametes, if it has not divided already.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341978
In a pollen grain, large irregularly shaped nucleus is present in
1 Vegetative cell
2 Generative cell
3 Tube cell
4 None of these
Explanation:
During development of male gametophyte first division of cell is mitotic producing two unequal cells. i.e., larger vegetative cell and smaller generative cell. The vegetative cell forms pollen tube after pollination.
