In which of the following sets of families, the pollen grains are viable for months?

(A) Solanaceae, Poaceae and Liliaceae

(B) Brassicaceae, Liliaceae and Poaceae

(C) Rosaceae, Liliaceae and Poaceae

(D) Leguminosae, Solanaceae and Rosaceae

Identify the correct description about the given figure :

(A) Wind pollinated plant inflorescence showing flowers with well exposed stamens.

(B) Water pollinated flowers showing stamens with mucilaginous covering.

(C) Cleistogamous flowers showing autogamy.

(D) Compact inflorescence showing complete autogamy

Identify the set of correct statements:

A The flowers of Vallisneria are colourful and produce nectar.

B The flowers of water lily are not pollinated by water.

C In most of water-pollinated species, the pollen grains are protected from wetting.

D Pollen grains of some hydrophytes are long and ribbon like.

E In some hydrophytes, the pollen grains are carried passively inside water.

Choose the correct answer from the options given below.

(A) C, D and E only

(B) A, B, C and D only

(C) A, C, D and E only

(D) B, C, D and E only

The part marked as ‘x’ in the given figure is

(A) Endosperm

(B) Thalamus

(C) Endocarp

(D) Mesocarp

Pollen grains remain preserved as fossils due to the presence of :

(A) Epidermal layer

(B) Tapetum

(C) Exine layer

(D) Intine layer