Contour ploughing is the farming practice of ploughing across a slope following its elevation contour lines. The rows form slow water run-off during rainstorms to prevent soil erosion and allow the water time to settle into the soil

Correct Option: C

Contour ploughing is the farming practice of ploughing across a slope following its elevation contour lines. The rows form slow water run-off during rainstorms to prevent soil erosion and allow the water time to settle into the soil

Coffee grows between the Tropics of Cancer and Capricorn. When grown in the tropics, coffee is a vigorous bush or small tree that usually grows to a height of 3–3.5 m (10–12 feet).

Correct Option: C

Coffee grows between the Tropics of Cancer and Capricorn. When grown in the tropics, coffee is a vigorous bush or small tree that usually grows to a height of 3–3.5 m (10–12 feet).

Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and subtropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24ºC.

Correct Option: C

Rice is a major crop grown in most tropical and semi tropical regions. Rice being a tropical and subtropical plant, requires a fairly high temperature, ranging from 20° to 40°C. it requires an average temperature of about 24ºC.

Fallowing, in agriculture, is the mode of preparing land, by ploughing it a considerable time before it is ploughed for seed. As a result of fallowing, parts of the soil become better incorporated, and thus reciprocally ameliorated; so that they may afford more uniform nourishment to the roots of plants

Correct Option: D

Fallowing, in agriculture, is the mode of preparing land, by ploughing it a considerable time before it is ploughed for seed. As a result of fallowing, parts of the soil become better incorporated, and thus reciprocally ameliorated; so that they may afford more uniform nourishment to the roots of plants

Sweet potato may be grown either on hills or beds. Rows need to be spaced 90-120 cm apart with plants spaced 30-40 cm apart in the row. It is known in Nepal as ‘sakar kand.’ It is grown both in the terai and the mid-hills throughout the country. It is the second most important root crop after potato in terms of production and area.

Correct Option: B

Sweet potato may be grown either on hills or beds. Rows need to be spaced 90-120 cm apart with plants spaced 30-40 cm apart in the row. It is known in Nepal as ‘sakar kand.’ It is grown both in the terai and the mid-hills throughout the country. It is the second most important root crop after potato in terms of production and area.