Beera is a farmer. His field has black soil and the climate is warm. Which fibre yielding plant should he grow in his field?

Answer is (b) Sunflower 

(1) Energy yielding— wheat, rice, maize (2) Protein yielding— gram, pigeon gram, lentil, soybean (3) Oil yielding— groundnut, castor, mustard, soybean (4) Fodder crops— barseem, oat, sudan grass

Lichens and Mosses (a) and (b). Lichens and mosses release substances which break down the stones resulting in the formation of soil.

(c) Cool days and cold nights 

Most of the plants grow best when the pH of the soil is close to 7. If the soil is too acidic or too basic, the plants grow badly or...

(a) (iii); (b) (i); (c) (ii); (d) (iv)

(a) Organic matter 

(i) Fumes and gases from burning materials cause cough and breathing problem (ii) Dry leaves can be used for making manure.

(a) Mediterrian climate have mild, rainy winter and hot, dry summers and Evergreen, Oak trees.