0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

In gymnosperms, the pollen chamber represents
  1. A cavity in the ovule in which pollen grains are stored.
  2. The microsporangium in which pollen grain develops
  3. An opening in the megametophyte through which the pollen tube approaches the egg
  4. A cell in the pollen grain in which the sperms are formed

A
A cell in the pollen grain in which the sperms are formed
B
A cavity in the ovule in which pollen grains are stored.
C
An opening in the megametophyte through which the pollen tube approaches the egg
D
The microsporangium in which pollen grain develops
Solution
Verified by Toppr

The pollen chamber is formed by degeneration of cells of nucellus situated in the micropylar part. It is a pre-pollination phenomenon and should be distinguished from degeneration of nucellar cells in its micropylar part following landing of pollen on nucellus or entry of pollen tube in the nucellus. It is where the pollens are stored.
Hence the correct option is A.

Was this answer helpful?
0
Similar Questions
Q1
Which of these develops into the seed?

(a) pollen grain
(b) ovary
(c) ovule
(d) pollen tube
View Solution
Q2
In pollen banks, pollen grains are stored at _______ ̊C temperature.
View Solution
Q3
Which among the following statements is correct?
(a) The vegetative cell of pollen grain divides to form the male gametes.
(b) Sporopollenin is absent in the germ pores.
(c) Intine of pollen grains is made up of cellulose and pectin.
(d) Pollen grains represent the male gametophyte.
View Solution
Q4
The plant parts which are haploid and present inside diploid part are:
(a) Embryo within the seed
(b) Pollen grains within the pollen sac
(c) Seed inside the fruit
(d) Female gametophyte within the ovule
(e) Male gametes within the pollen grains
View Solution
Q5
Which layer of developing microsporangium nourishes developing pollen grains?
View Solution