In non-endospermic seeds,food is stored in

What do the following parts of a flower develop into after fertilisation? $(a)$ Ovary $(b)$ Ovules.

Fruit formed without fertilisation of the ovary is called:

In which group of plants does the ovule develop into a seed and the ovary develop into a fruit after fertilization?

$S$ - Statement: The embryo from the seed of an orchid is extracted and grown in a culture medium.
$R$ - Reason: The seeds of some plants like orchids do not contain stored food.

Why is vivipary an undesirable trait for annual crop plants?