Fusion of a male gamete with the secondary buicleus forms the

One celled suspensor is found in

When the pollen grains are not transferred from anthers to the stigma in flower due to the barrier or fence, it is referred as or when some natural barrier exists between androecium and gynoecium to check self pollination, it is known as

Endosperm is the result of

Nitsch was able to get strawbarries of curious shapes by