Nucellar cell ploidy is 2n . Given , 2n=16 n=16/2 = 08 leaf cell ploidy 2n. thus 2n=16 megaspore mother cell ploidy also 2n. Read More …
Category: SEXUAL REPRODUCTION IN FLOWERING PLANTS
If the deploid number of chromosomes in an angiosperm is 18, how many chromosomes would there be in a Pollen grain and in an endosperm?
In the given Angiosperm, 2n= 18 therefore n= 18/2 = 09 Pollen grain is the male gamete and gametogenesis is a result of meiosis Read More …
Differentiate between Polyembryony and Apomixis
Differentiate between Perisperm and Pericarp
Differentiate between integument and testa.
Differentiate between Coleoptile and coleorrhiza.
Differentiate between hypocotyl and epicotyl.
what is double fertilisation?
This happens in Angiosperms. The fertilisation in Angiosperms involves – fusion of one male nucleus with egg cell nucleus and this is called Syngamy. Read More …
One hot summer day, Rama was eating a watermelon she noticed that the watermelon did not have any seeds? Give Reason
Some fruits are formed without fertilisation thus the fruit is formed normally but ovules dont form seeds. This phenomenon is called Parthenocarpy and the Read More …
Reproduction in Flowering plants, chap 2 , Biology, Class XII, NCERT
Q.1. In certain plants fertilisation is not obligatory for fruit production. Give Reasons. A. 1.In certain plants fruits can be formed by parthenocarpy . Read More …