How many years does the bamboo species generally take to produce a large number of fruits?

Diploid zygote is universal in

In bacteria,fungi,and lower plants,various thick-walled $A$ are formed,which help them to survive $B$ conditions; these germinate on the availability of a suitable environment. In higher plants,$C$ and some other vegetative reproductive structures serve as means to tide over periods of stress besides helping in dispersal; they germinate to form new plants under favourable moisture and temperature conditions. Choose the correct option for $A, B$,and $C$.

The external stimulus which induces cleavage in an unfertilized ovum is called:

Which type of reproduction is found in Hydra?

Which of the following statements is true?