1. Which one of the following is one of the characteristics of self-pollinated flowers?

(a) Flowers are large and showy

(b) Flowers remain closed and do not open

(c) Stigma and anthers mature at the same time

(d) Pollen is produced in very large quantities

2. Exineand intine are the parts of

(a) Embryo sac

(b) Pollen grain

(c) Stigma

(d) Seed

Match the items in Column A with those in Column B.

Column A	Column B
(a) Generative nucleus	(i) Pollen tube
(b) Germ pore	(ii) Endosperm nucleus
(c) Exine	(iii) Testa
(d) Secondary nucleus	(iv) Fertilization
(e) Integument	(v) Male nuclei
(f) Egg nucleus	(vi) Rough

State the name of the chief pollinating agent against the corresponding plant by choosing from those given in brackets.

(a) Dahlia_______ (crow, butterflies, mosquito).

(b) Maize_______ (bees, locusts, rain, wind).

(c) Vallisneria _______ (wind, water, ants, rabbits).

Fill in the blanks with suitable words.

(a) Transference of pollen grains from anthers to stigma of the same flower is called ________.

(b) Different timings for maturation of gynoecium and androecium is called ________.

(c) _______ is a water-pollinated flower.