Given below are statements about the harmful effects of weeds
on crop plants.
(i) They interfere in harvesting.
(ii) They help crop plants to grow healthily.
(iii) They compete with crop plants for water, nutrients, space
and light.
(iv) They affect plant growth.
Choose the correct combination of statements.
(a) i, iii, iv (c) iii, iv
(b) iii only (d) i, ii, iii, iv
Which of the following is not true for fertilisers?
(a) They increase the yield.
(b) Their excessive use disturbs the balance of nutrients in soil.
(c) They are generally used in small quantity.
(d) They are environment friendly.
Which of the following tools would a farmer use to remove weeds
from the field?
(a) Hoe (c) Axe
(b) Plough (d) Cultivator
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 which indicate the need
to irrigate crops.
(a) i and ii (b) i, ii, iii
(c) i, ii, iii, iv (d) i and iii
The term used for the process of separation of grains from chaff
is
(a) sieving (c) winnowing
(b) threshing (d) hand picking
Which of the following statement is not true for organic manure?
(a) It enhances water holding capacity of soil.
(b) It has a balance of all plant nutrients.
(c) It provides humus to soil.
(d) It improves texture of soil.
Propagation of ginger is generally done using
(a) seed (c) root
(b) stem (rhizome) (d) leaf
Which one of the following condition is not essential to grow
maize?
(a) High temperature (c) Low temperature
(b) Humidity (d) Rainfall
Which one of the following condition is not essential to grow maize?
(a) High temperature (c) Low temperature
(b) Humidity (d) Rainfall
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