Male gametophyte of angiosperms is shed as

Correct Option (b) Reason : In angiosperms, pollen grains are generally shed from the anther at 2-celled stage, i.e. one generative cell and one vegetative cell. But, in some angiosperms, the generative cell divides prior to the dehiscence of anther and shed at 3-celled stage, i.e. one vegetative cell and two male gametes. Double fertilisation was discovered by Nawaschin (1898) in Fritillaria and Lilium. It was confirmed by Guignard (1899)