Question

Read the statements given below.(i) Seeds require moisture for germination.(ii) Plants can absorb nutrients mostly in dissolved form.(iii) Irrigation protects crops from both frost and hot air currents.(iv) Irrigation improves soil texture. Choose the combination of statements that indicate the need to irrigate crops. *

Answer 1

Answer:

(i) and (ii)

SOLUTION

A dormant seed contains only 10-15% of water and is essentially dehydrated. The seed has to absorb water in order to become active. Plants grow by absorbing nutrients from the soil and all the nutrients have to be in the dissolved form.

Irrigation does not always improve soil texture. Irrigation does not protect the crops from frost. Irrigation is the artificial application of water to the land or soil. It is used to assist in the growing of agricultural crops, maintenance of landscapes, and revegetation of disturbed soils in dry areas and during periods of inadequate rainfall.