$X$ - $MMC$ is a large cell containing dense cytoplasm and a prominent nucleus.
$Y$ - Method of embryo sac formation from a single megaspore is termed monosporic.

Choose the correct option for the embryo sac of angiosperms.

The nucellus is found in .....

Identify the correct option for $P$ and $Q$ based on the number of ovules in an ovary:
$P$: Number of ovules in an ovary is one
$Q$: Number of ovules in an ovary is more than one
$\quad\quad\quad\quad P \quad\quad\quad\quad\quad\quad\quad\quad Q$
$(A)$ Papaya,Watermelon,Mango | Wheat,Paddy,Orchid
$(B)$ Wheat,Paddy,Orchid | Papaya,Watermelon,Mango
$(C)$ Wheat,Paddy,Mango | Papaya,Watermelon,Orchid
$(D)$ Papaya,Watermelon,Orchid | Wheat,Paddy,Mango

Which of the following is a part of the pistil (gynoecium)?

The arrangement of megaspores in a tetrad in a gymnosperm is: