The plant part which consists of two generations one within the other,is

The residual persistent part which forms the perisperm in the seeds of beet is:

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

The seed coat is formed from .....

After fertilization,the outer integument of the ovule develops into the........

In castor, the proliferation of the outer integumentary cells at the micropylar region forms a structure known as the caruncle. What is the primary function of this structure?