$(a)$ In both plants and animal, have three phases during their life cycle.
$(b)$ In plant and animal, hormones are responsible for the transitions between the three phase.
$A$ and $B$ both correct.
$A$ and $B$ both incorrect.
$A$ is correct and $B$ is incorrect.
$A$ is incorrect and $B$ is correct.
Match column $I$ with column $II$ and select the correct option using the codes given below.
Column $-I$ | Column $-II$ |
$(A)$ Pistils fused together | $(i)$ Gametogenesis |
$(B)$ Formation of gametes | $(ii)$ Pistillate |
$(C)$ Hyphae of higher Ascomycetes | $(iii)$ Syncarpous |
$(D)$ Unisexual female flower | $(iv)$ Dikaryotic |
Which is not bisexual animal ?
Which one of the following generates new genetic combinations leading to variation?
Development of an egg without fertilization is called
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.