Question

Consider the following four statements (a-d) and select the option which includes only the correct ones.
(a) In a normal flower which opens and exposes the anthers and the stigma, complete autogamy is rather rare.
(b) In sea grasses, female remains submerged in water and the pollen grains are released inside the water.
(c) Transmission tissue is the character of solid style.
(d) Mature pollen grain is three-celled.

• A. Statement a, d
• B. Statement a, c, d
• C. Statement b, c
• D. Statement a, b, c

Answer 1

The correct option is C Statement b, c

When a flower exposes its anthers and stigma, the flower is open to pollination from any other flower. This condition is called chasmogamy and such a flower is called chasmogamous flower. Complete autogamy (self-pollination) is rare in chasmogamous flower. Statement a is correct.

In the case of sea grass, the female flowers remain submerged in water. The pollen grains are released inside the water. Statement b is correct.

The transmitting tissue is the tissue in the solid style of a carpel through which the pollen tube grows. It connects the stigma and the inside of ovary. It consists of densely cytoplasmic cells with intercellular mucilage. Statement c is correct.

When the pollen grain is mature it contains two cells, the vegetative cell and generative cell. Statement d is incorrect.

The only option which has only the correct options is option c in which both statements b and c are correct.