Question

Match the columns. Column A Column B (a) Maize (b) Endosperm (c) Autogamy (d) Exine (e) Cleistogamy (f) Entomophily (i) Self-pollination (ii) Commelina (iii) Pollination by insect (iv) Pollination by wind (v) The triploid tissue (vi) Outer coat of pollen​

Answer 1

Answer:

           Column-A               Column-B

(a) Maize                (iv)                   (i) Self-pollination                                                          

(b)  Endosperm      (v)                   (ii) Commelina

(c)  Autogamy         (i)                  (iii) Pollination by insect

(d) Exine                 (vi)                   (iv) Pollination by wind

(e) Cleistogamy       (ii)                  (v)  The triploid tissue            

(f) Entomophily       (iii)                 (vi) Outer coat of pollen​

Explanation:

(a). The type of Pollination seen  in maize is Wind pollination (Anemophily),plants showing wind pollination need to have light and nonsticky pollengrains, well exposed stamens, feathery and large stigma

The hair like structures seen in a corn in nothing but the stigma and style which are feathery.

(b). The embryo present in the seeds of angiosperm plants have a tissue which is surrounded by the endosperm.which is triploid (3n)

It is formed by the fusion of polar nuclei located centrally at the female gametophyte and the male gamete received through a pollen tube It nourishes the growing seed (see figure )

(c). Autogamy is called as self pollination . Self pollination means transfer of pollen grain from anther to stigma of same flower.

(d). The pollen grain has two layers: The outer layer EXINE and unner INTINE. Exine is harder than intine.

(e). Cleistogamy is a type of self pollination which is seen in plants with closed flowers EX; Commelina.Oxalis

(f).  Pollination by insects is called as Entomophily