Horizontally oriented ovules are called:

If a tetraploid plant contains $48$ chromosomes in its nucellus,then what is the number of chromosomes in the egg cell and in a synergid,respectively?

Which of the following labels in the given diagram of an ovule is incorrect?

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 megaspore mother cell is differentiated from one of the cells of the

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