Identify $X$ and $Y$ from the given diagram
$X-$ seed, $Y-$ pericarp
$X-$ pericarp, $Y-$ seed
$X-$ seed, $Y-$ fruit
$X-$ fruit, $Y-$ seed
What is the major disadvantage of external Fertilization ?
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 |
Why the chances of survival of young ones is greater in viviparous ?
Parthenogenesis is observed in
A haploid parents produce gametes by...... division.