Cell division itself is a mode of reproduction in

Between an annual and a perennial plant,which one has a shorter juvenile phase? Give one reason.

Which of the following statements is incorrect?
$(i)$ Bamboo species flower only once in their lifetime,generally after $50-100$ years,produce a large number of fruits,and die.
$(ii)$ In animals,the juvenile phase is followed by morphological and physiological changes prior to active reproductive behaviour.
$(iii)$ The reproductive phase is of the same duration in all organisms.
$(iv)$ The juvenile phase is the period of growth between the birth of an individual until it reaches reproductive maturity.

Gametes are $.....P.....$, and the zygote is always $.....Q......$. Identify $P$ and $Q$ respectively.

Zoospore,Conidia,Tuber,Offset,Pollen,Zygote. From the structures given in the above box,how many are not associated with asexual reproduction?

The number of taxa exhibiting asexual reproduction is drastically reduced in higher plants (angiosperms) and higher animals (vertebrates) as compared with lower groups of plants and animals. Analyse the possible reasons for this situation.