Question

Match the following ovular structure with post fertilization structure and select the correct alternative.

(a) Ovule	1. Endosperm
(b) Funiculus	2. Aril
(c) Nucellus	3. Seed
(d) Polar nuclei	4. Perisperm

• A. a-3, b-2, c-4, d-1
• B. a-3, b-2, c-1, d-4
• C. a- 1, b- 2, c-3, d-4
• D. a- 2, b-3, c-1, d-4

Answer 1

The correct option is A a-3, b-2, c-4, d-1

• The integument megasporangium within which meiosis and megaspore formation takes place is known as ovule. It develops into a seed after fertilization.
• Funiculus is the stalk-like structure. It attaches the ovule to the placenta. It acts as an umbilical cord in plants. After fertilization, it is transformed into aril which is the stalk of the seed.
• The mass of parenchymatous tissue which is surrounded by integuments is known as nucellus. It encloses the embryo sac and provides nourishment to the developing embryo. It is generally used up during the development of the embryo. But, sometimes remain outside the endosperm in the form of a thin layer. This thin layer is known as perisperm.
• During the triple fusion in double fertilization, the other male gamete moves towards the two polar nuclei located in the central cell and fuses with them to produce a triploid primary endosperm nucleus, which is generally called endosperm.

So, the correct combination is (A).