Medium for transport of gametes in Algae, Bryophytes, Pteridophytes.

Select the incorrect pair.

........and..........is example showing external fertilization

Which is correct sentence ?

Which of the following statements is incorrect ?
$(i)$ Bamboo species flower only once in their life time, generally after $50-100$ years and produce 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 same duration in all organisms.
$(iv)$ Juvenile phase is the period of growth between the birth of an individual till it reaches reproductive maturity.

In Ophioglossum (a fern) chromosome number in gamete ..... and in potato chromosome number in gamete is ....