In the gametophytic phase -

The zygote develops into an embryo through $.......$ and the primary endosperm cell develops into endosperm tissue through $.......$.

Indicate the stages where meiosis and mitosis occur $(1, 2$ or $3)$ in the flow chart: Megaspore mother cell $\xrightarrow{1}$ Megaspores $\xrightarrow{2}$ Embryo sac $\xrightarrow{3}$ Egg.

The life cycle of an angiosperm is given below. What are $P, Q$ and $R$?
$P \quad Q \quad R$

Identify the haploid and diploid structures from the following list:
$I$ - Megaspore mother cell
$II$ - Microspore mother cell
$III$ - Egg cell
$IV$ - Male gamete
$V$ - Synergid
$VI$ - Embryo
$VII$ - Antipodal cell
$VIII$ - Zygote
$IX$ - Megaspore
$X$ - Microspore
Select the correct grouping for Haploid and Diploid structures.

In angiosperms,microsporogenesis and megasporogenesis are . . . . . . .