Which is not bisexual animal ?
Earthworm
Spongila
Cockroach
Tapeworm
$(a)$ 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.
Identify $X$ and $Y$ from the given diagram
In organisms, further developments of the zygote depends on.
A haploid parents produce gametes by...... division.
Choose correct pair :