Explanation
Endosperm contain three sets of chromosome i.e. they are triploidy (3 n ) in nature. It is formed by fusion of second male gamete with the two polar nuclei or secondary nucleus in the central cell.
Seed formation without fertilisation in flowering plants involves the process of
(A)
budding
(B)
somatic hybridisation
(C)
apomixis
(D)
sporulation
EASY
Correct Answer:C
Explanation
Apomixis is a special mechanism found in flowering plants to produce seeds without fertilisation. It is a type of asexual reproduction which mimics the sexual reproduction and is commonly found in Citrus varieties.
Explanation
Pollen grain or male gametophyte in angiosperms contain one generative cell. The generative cell further divides meiotically to form two male gametes (sperms). So, a mature male gametophyte in angiosperms contains two sperms and one vegetative cell.