The ....... is a scar on the seed coat through which the developing seeds were attached to the fruit.

$A$: Fruit is a mature or ripened ovary,developed after fertilization.
$R$: If a fruit is formed without fertilization of the ovary,it is called a parthenocarpic fruit.

'Fertilisation is not an obligatory event for fruit production in certain plants'. Explain the statement.

Statement-$X$: The seeds of some plants like orchids do not contain stored food.
Statement-$Y$: The embryo present in their seeds is extracted and grown in a culture medium.

Which of the following plants produces fruits that contain thousands of seeds?

Select the correct option regarding the classification of seeds based on the presence or absence of endosperm.