What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
What is meant by monosporic development of female gametophyte?
With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
Arrange the following terms in the correct developmental sequence:
Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes.
Differentiate between microsporogenesis and megasporogenesis. Which type of cell division occurs during these events? Name the structures
formed at the end of these two events.
Name the parts of an angiosperm flower in which development of male and female gametophyte take place.
Match the following:
Column I Column II
(a) T4 (i) Hypothalamus
(b) PTH (ii) Thyroid
(c) GnRH (iii) Pituitary
(d) LH (iv) Parathyroid
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