Development of Male Gametophyte
Trending Questions
Q.
What is the shape of the generative cell in pollen grain?
Irregular
Spindle
Circular
Spherical
Q.
The cells present in a mature pollen grain after the first mitotic division are -
Vegetative cell
Generative cell
Sperm
Antipodal cells
Q. Male gametophyte in angiosperms produces -
- single sperm cell and two vegetative cells
- three sperm cells
- two sperm cells and a vegetative cell
- single sperm cell and a vegetative cell
Q. What is the function of germ pore?
- Emergence of radicle
- Initiates formation of male gametes
- Initiation of pollen tube
- Release of male gametes
Q. A generative cell wall was destroyed by laser but later a normal pollen tube still formed. This probably occured because -
- Vegetative cell was not damaged
- Laser beam stimulates growth of pollen tube
- Contents of killed generative cell stimulate pollen growth
- The region of emergence of pollen tube is not harmed
Q.
Mark the correct pairs(s) with respect to post fertilization structure & events in flowering plants.
(a) Integuments – Pericarp
(b) Definitive nucleus – Endosperm
(c) Synergids – Degenerate
(d) Micropyle – Hilum
only b & c
a, b & c
a, b, c & d
only a & b
Q.
The cells present in a mature pollen grain after the first mitotic division are -
Vegetative cell
-
Generative cell
Both A and B
Antipodal cells
Q. Male gametophyte in angiosperms produces -
- three sperm cells
- single sperm cell and two vegetative cells
- two sperm cells and a vegetative cell
- single sperm cell and a vegetative cell
Q. A generative cell wall was destroyed by laser but later a normal pollen tube still formed. This probably occured because -
- Vegetative cell was not damaged
- Contents of killed generative cell stimulate pollen growth
- Laser beam stimulates growth of pollen tube
- The region of emergence of pollen tube is not harmed
Q.
What is the shape of the generative cell in pollen grain?
Irregular
Spindle
Spherical
Circular