Pollen grain are formed in
Important Questions on Sexual Reproduction in Flowering Plants
Which of the following is the correct option for the figure given below?
Consider the following statements choose the correct answer from the given options.
Statement Innermost layer of microsporangium is tapetum.
Statement Cells of tapetum possess dense cytoplasm with more than one nucleus and nourishes developing pollen grains.
A- Endothecium
B- Tapetum
C- Epidermis
D- Middle Layer
(a) Part that produces pollen grain -
(b) Part that transfers male gametes to the female gametes -
Draw the diagram showing the longitudinal section of a flower. Label the following parts:
i) Style
ii) Anther
A) Several hormonal and structural changes are initiated for the development of floral primordium.
B) Each anther will have two sporangia at the sides.
C) Stomium will be useful for the dehiscence of pollen sacs.
D) Pollen grains can be stored at .
E) Pollen viability in rice will be days.
Assertion Xenogamy involves transfer of pollen grains from the flower of one plant to the stigma of another plant.
Reason This is the only type of pollination which brings genetically different types of pollen grains to the stigma.
The correct answer is:
Assertion Pollengrains are well preserved as fossils
Reason The exine of pollen grains is made up of sporopollenin, which can withstand high temperatures, strong acids and alkali.
'Pollen grains' are produced by:
