Q15 of 18 Page 40

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

The process of removal of the anthers before they mature from a bisexual flower carefully using the forceps without affecting the female reproductive part (pistil) is called emasculation.


It is one of the measures of artificial insemination.


To obtain a plant of desired variety, the plant breeders use this technique. They protect the stigma from being pollinated by undesired pollens from the same flower.


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13

Differentiate between:

A. hypocotyl and epicotyl;


B. coleoptile and coleorrhiza;


C. integument and testa;


D. perisperm and pericarp.


 14

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

 16

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

 17

Explain the role of tapetum in the formation of pollen-grain wall.