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प्रश्न
Read the statements given below.
- Seeds require moisture for germination.
- Plants can absorb nutrients mostly in dissolved form.
- Irrigation protects crops from both frost and hot air currents.
- Irrigation improves soil texture.
Choose combination of statements which indicate need to irrigate crops.
विकल्प
i and ii
i, ii, iii
i, ii, iii, iv
i and iii
उत्तर
i and ii
Explanation -
The combination of statements (i) and (ii) indicate need for irrigation.
Irrigation is the supply of water to crops at regular intervals as water or moisture is necessary for seed germination, growth and other physiological processes. Moreover, the plants readily absorb nutrients in dissolved form along with water through root hairs of roots.
It does not protect crops from frost and hot air currents and manure not irrigation improves soil texture.
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