crop production and management

Question 1

The crops that are sown in the rainy season are called _______.

Answer 1

kharif crops

Question 2

The chemical substances rich in nutrients are called _______.

Answer 2

fertilisers

Question 3

Beans and peas are preferably grown in nitrogen-deficient soil because of their _______.

Answer 3

rhizobium in root nodules which can fix atmospheric nitrogen

Question 4

When healthy seeds are dipped in water, the seeds _______.

Answer 4

sink in water

Question 5

DDT is an example of _______.

Answer 5

insecticide

Question 6

Undesirable plants which are grown along with crop are called _______.

Answer 6

weeds

Question 7

To turn the soil and loosen it is called _______.

Answer 7

ploughing

Question 8

Bacteria present in the root of leguminous plants are called _______.

Answer 8

Rhizobium

Question 9

Rearing of animals on a large scale is known as _______.

Answer 9

animal husbandry

Question 10

The sprinkler method of irrigation is good for _______.

Answer 10

sandy soil and uneven lands

Question 11

Continuous plantation of crops affects the soil by making it _______.

Answer 11

poorer in certain nutrients

Question 12

It is necessary to reduce the moisture in freshly harvested grains to prevent _______.

Answer 12

germination and spoilage

Question 13

Appropriate distance should be maintained between seeds to prevent _______.

Answer 13

competition for resources

Question 14

Good quality seeds are essential to grow _______.

Answer 14

a strong and healthy crop

Question 15

Extreme cold weather can cause plants to _______.

Answer 15

die due to frozen water inside them

Question 16

Continuous rain can lead to _______ in plants.

Answer 16

water logging and root damage

Question 17

Nitrogen makes up approximately _______ of the atmospheric gases.

Answer 17

78%

Question 18

Apiculture is the scientific method of _______.

Answer 18

rearing honeybees

Question 19

Hybridisation is done to combine the characteristics of _______.

Answer 19

two or more varieties of plants

Question 20

Pisciculture involves _______.

Answer 20

breeding, rearing and transplantation of fish

Question 21

Two conventional methods of irrigation are _______.

Answer 21

Lift irrigation method, water wheel irrigation method

Question 22

Threshing is the process of _______.

Answer 22

separating grain from the crop stalk

Question 23

Winnowing involves the separation of _______.

Answer 23

lighter chaff from heavier grain

Question 24

The correct order of sugarcane crop production is _______.

Answer 24

Preparation of soil, Ploughing the field, Sowing, Manuring, Irrigation, Harvesting, Sending crops to sugar factory

Question 25

Manure is considered better than fertilizers because it _______.

Answer 25

adds nutrients without affecting soil fertility

Question 26

Weeds adversely affect plant growth by competing for _______.

Answer 26

nutrients, space, water, and sunlight

Question 27

Nitrification is the process of converting _______ into nitrates.

Answer 27

ammonia

Question 28

Denitrification involves the release of _______ into the atmosphere.

Answer 28

nitrogen gas

Question 29

The depth at which seeds are planted is important because _______.

Answer 29

it affects sunlight availability and soil support

Question 30

Sowing seeds with a seed drill is better than broadcasting because it _______.

Answer 30

ensures uniformity and proper distance

Question 31

Nitrogen can be replenished in soil naturally through _______.

Answer 31

crop rotation with leguminous crops

Question 32

Modern methods of irrigation that help use water economically include _______.

Answer 32

Drip irrigation system, sprinkler method

Question 33

Drought resistant varieties of crop require _______.

Answer 33

very little amount of rainfall

Question 34

Some crops that require less water include _______.

Answer 34

Sorghum, pearl millet, chickpea, groundnut

Question 35

Hybridization has advantages such as _______.

Answer 35

higher yields, disease resistance

Question 36

Disadvantages of hybridization include _______.

Answer 36

dependence on seed companies, reduced genetic diversity

Question 37

Slash and burn farming involves _______.

Answer 37

cutting down and burning trees for agriculture

Question 38

Biofertilizers are preferred over chemical fertilizers because they _______.

Answer 38

promote sustainable agriculture and improve soil health

Question 39

During ploughing, land is pressed lightly to avoid _______.

Answer 39

compacting the soil