An ovule in which a single-layered nucellus is present is known as:

Name the component cells of the 'egg apparatus' in an embryo sac.

Identify the location and function of the following structures in an angiosperm ovule:
$1.$ Nucellus
$2.$ Filiform apparatus

Which of the following types of embryo sac is commonly found in angiosperms?

What is the function of the micropyle in an ovule?

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