Question

01. A hexaploid (6n) Oenothera plant pollinates an
octaploid (8n) Oenothera plant. As a result of double
fertilization, what will be the ploidy of embryo and
endosperm respectively?
a) 7n, 7n
b) 7n, 10n
c) 10n, 7n
d) on, 8n

02. How many male gametes can be produced by 4
pollen mother cells ?
b) 16
c) 32
d) 64

03. Select the incorrect statement-
a) Typical angiospermic anther is bilobed
b) Pollen grains are usually 2 celled pollinated
c) Distal end of filament is attached to anther
d) proximal end of filament is attached to anther

04. Which of the following enables the pollen grain to
be preserved as fossils for very long durations?
a) Sporopollenin
b) Cellulose
c) Hemicellulose
d ) Pectin

05. In angiosperms, a typical microspore gives rise to -
a) No pollen grain
b) 1 pollen grain
c) 2 pollen grain
d) 4 pollen grain

06. Which set of plants is having albuminous seeds ?
a) Barley, Castor
b) Wheat, Sunflower
c) Pea, Maize
d) Wheat, Groundnut

07. In comparison to generative cell of 2 celled stage of
a pollen grain, vegetative cell is -
a) Smaller
b) Spindle shared
c) With abundant food reserve
d) With dense cytoplasm ​

Answer 1

Answer:

4. a) Sporopollenin.....

5. d) 4 pollen grain