The seed coat is formed by the .....

The seed of $Lupinus \text{ } arcticus$ excavated from Arctic Tundra, germinated and flowered after an estimated record of dormancy of how many years (in $years$)?

Thalamus contributes to the fruit formation in

In the figure given below,identify the seed and the pericarp.

Describe the post-fertilisation changes in a flower.

An example of a naturally occurring parthenocarpic fruit is