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Class 12
Botany :-NCERT Solutions - Reproduction Plants.

Question 2
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.


Question 3
Arrange the following terms in the correct developmental sequence:


Question 5
What is meant by monosporic development of female gametophyte?


Question 7
What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.


Question 9
What is self-incompatibility? Why does self-pollination not lead to seed formation in self-incompatible species?


Question 10
What is bagging technique? How is it useful in a plant breeding programme?


Question 11
What is triple fusion? Where and how does it take place? Name the nuclei involved in triple fusion.


Question 12
Why do you think the zygote is dormant for sometime in a fertilized ovule?


Question 13
Differentiate between:
(a) Hypocotyl and epicotyl
(b) Coleoptile and coleorrhiza
(c) Integument and testa
(d) Perisperm and pericarp


Question 14
Why is apple called a false fruit? Which part(s) of the flower forms the fruit?


Question 15
What is meant by emasculation? When and why does a plant breeder employ this technique?


Question 16
If one can induce parthenocarpy through the application of growth substances, which fruits would you select to induce parthenocarpy and why?


Question 18
What is apomixis and what is its importance?