Generally,how many megaspores take part in the development of the female gametophyte?

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

The female gametophyte of a typical dicot at the time of fertilization is

In which of the following types of embryo sac do the megaspore nuclei not fuse to form a triploid nucleus at the chalazal end?

The megasporangium is equivalent to which of the following?

If the number of chromosomes in root cells is $14$,what will be the number of chromosomes in synergid cells of an ovule of that parent?