0

Production of agricultural crops - class-VIII

Attempted 0/36 Correct 0 Score 0

Which one of the following is a leguminous crop?

  1. Pulses

  2. Jawar

  3. Millets

  4. Sesamum


Correct Option: A
Explanation:

Among the given options pulses belong to leguminous crop. Pulses are a type of leguminous crop but pulse term refers to dried seed.

Some examples of pulses include beans, peas, cowpea, dry beans like pinto beans, kidney beans, navy beans, dry peas, lentils, lupins, and peanuts, Mung bean, golden gram, green gram.

Pulses grow in pods and come in a variety of shapes, sizes and colours.

Pulses are very high in protein and fibre, and are low in fat. They also have nitrogen fixing capabilities.

Soyabeans are rich in __________.

  1. Vitamin A

  2. Proteins

  3. Minerals

  4. Carbohydrates


Correct Option: B
Explanation:

Soybeans are low in saturated fat and high in protein, vitamin C, and folate. They are also a good source of fiber, calcium, iron, magnesium, phosphorus, potassium, and thiamin.

The important crop that helps to restore soil fertility by nitrogen fixation and is also a good source of protein is _________.

  1. Cereals

  2. Pulses

  3. Vegetables

  4. Fruits


Correct Option: B
Explanation:

Nitrogen is the most essential nutrient for plant. Pulses can utilize nitrogen present in the soil by symbiotic relation with nitrogen fixing bacteria that live inside roots of the plants.

Pulses also improve fertility of soil and hence are grown as rotation crops in between the different crops.

Which of the following is a major pulse producing state?

  1. Kerala

  2. Goa

  3. Madhya Pradesh

  4. Punjab


Correct Option: C
Explanation:

India is the largest producer as well as consumer of pulses in the world. Major pulses that are grown in India are tur (arhar), urad, moong, masur, peas and gram. Major pulse producing states in India are Madhya Pradesh, Uttar Pradesh, Rajasthan, Maharashtra and Karnataka.

In respect of which one of the following crops, The Green Revolution in India had limited impact?

  1. Maize

  2. Wheat

  3. Rice

  4. Pulses


Correct Option: D
Explanation:

  • Green Revolution is the Intensive plan of the 1960s to increase crop yields in developing countries by introducing higher-yielding strains of plant and new fertilizers
  • It developed new strains of high yield variety seeds, mainly wheat and rice and also millet and corn.
  • The green revolution of wheat and rice left pulses becoming the next preference. 

Choose the odd one out.

  1. Rice

  2. Moong

  3. Soybean

  4. Urad


Correct Option: A
Explanation:

Rice is paddy crop and rest of them are kharif crop.

Masur, urad and tur are varieties of ________.

  1. Rice

  2. Coffee

  3. Pulses

  4. Wheat


Correct Option: C
Explanation:

  • Masur, Urad and Tur are varieties of pulses.
  • Masur: This dal is best for improving blood circulation.
  • Urad: These pulses are rich in vitamin B.
  • Tur: Usually eaten by majority of Indians. It helps in easy bowel movement.

Plants which fix nitrogen in soil and improve soil fertility are called ________.

  1. Nitrogenous plants

  2. Leguminous plants

  3. Plantation

  4. Beverage crops


Correct Option: B
Explanation:

  • Leguminous crops are plants which belong to Leguminosae family. Legumes are grown primarily for their grain seed called pulse.
  • Nitrogen fixing capabilities; In the roots of legumes, a special type of bacteria Rhizobia is present. They fix nitrogen and make it available to the plant.

If it rains only for two months which of the following will yield maximum crop per hectare?

  1. Short term crops

  2. Long term crops

  3. Pulses

  4. Millets


Correct Option: D
Explanation:

Millets will yield maximum crop per hectare

The Govt. of India has decided to increase the export of cashew nuts. Which of the following is not a major cashew nut growing State?

  1. Goa

  2. Maharashtra

  3. Kerala

  4. Andhra Pradesh

  5. Uttar Pradesh


Correct Option: E
Explanation:

Uttar Pradesh  is not a major cashew nut growing State.

Which type of crop is able to fix nitrogen from air?

  1. Legume

  2. Rice

  3. Tuber

  4. Potato


Correct Option: A
Explanation:

Legume
Nitrogen fixing plants don't pull nitrogen from the air on their own. They actually need help from a common bacteria called Rhizobium. The bacteria infects legume plants such as peas and beans and uses the plant to help it draw nitrogen from the air.

Which one of the following is the biggest producer of rice?

  1. West Bengal

  2. Punjab

  3. Madhya Pradesh

  4. Rajasthan


Correct Option: A
Explanation:

West Bengal is the largest producer of rice in India. India is one of the largest producers of rice in the world

What is the average rainfall required for the cultivation of rice?

  1. 100 cm to 140 cm

  2. 120 cm to 150 cm

  3. 150 cm to 200 cm

  4. 180 cm to 300 cm


Correct Option: D
Explanation:

Rice requires more water than any other crop. As a result, paddy cultivation is done only in those areas where minimum rainfall is 115 cm. Although the regions are having average annual rainfall between 175—300 cm are the most suitable.

Production of rice requires an average temperature of about __________.

  1. $21^\circ$C

  2. $22^\circ$C

  3. $24^\circ$C

  4. $28^\circ$C


Correct Option: C
Explanation:

Rice is a tropical crop and grown where the average temperature during the growing season is between 20°C and 27°C. ADVERTISEMENTS: Abundant sunshine is essential during its four months of growth. The minimum temperature should not go below 15°C as germination cannot take place below that temperature.

There are about ______ varieties of rice in the world.

  1. 100

  2. 1000

  3. 40,000

  4. 50,000


Correct Option: C
Explanation:

There are more than 40,000 varieties of cultivated rice (the grass species Oryza sativa) said to exist. But the exact figure is uncertain. Over 90,000 samples of cultivated rice and wild species are stored at the International Rice Gene Bank and these are used by researchers all over the world.

Rice is produced more in _____________.

  1. Tamil Nadu

  2. West Bengal

  3. Andhra Pradesh

  4. Punjab


Correct Option: B

How many varieties of rice are grown in India?

  1. 1000

  2. 40000

  3. 5000

  4. 10000


Correct Option: B
Explanation:
40,000 varieties
There are more than 40,000 varieties of cultivated rice (the grass species Oryza sativa) said to exist. But the exact figure is uncertain. Over 90,000 samples of cultivated rice and wild species are stored at the International Rice Gene Bank and these are used by researchers all over the world.

Rice cultivation requires ________.

  1. High temperature, high humidity and annual rainfall above 100 cm.

  2. Low temperature, low humidity and less rainfall.

  3. Moderate temperature, high humidity and annual rainfall more than 200 cm.

  4. High temperature, zero humidity and no rainfall


Correct Option: A
Explanation:

 It is the staple food crop of a majority of the people in India. Our country is the second largest producer of rice in the world after China. It is a kharif crop which requires high temperature, (above 25°C) and high humidity with annual rainfall above 100 cm. 

In which method the seeds are dropped at regular intervals in furrows?

  1. Transplantation

  2. Planting

  3. Broad casting

  4. Dibbling


Correct Option: D
Explanation:
Dibbling

is the process of placing the seeds in holes at definite depth made in seed bed and covering them.
The and tool used is called dibbler which has many conical projections made in a frame.
This is adopted for small plots and is generally used for vegetable crops.

West Bengal is the largest producer of rice in India, constituting about _______ percent of the total rice production area. 

  1. 10

  2. 12

  3. 15

  4. 20


Correct Option: C
Explanation:

West Bengal is the largest producer of rice in India, constituting about 15 percent of the total rice production area. 

The crop that requires more irrigation is __________.

  1. wheat

  2. rice

  3. maize

  4. jowar


Correct Option: B
Explanation:

It is the staple food crop of a majority of the people in India. Our country is the second largest producer of rice in the world after China. It is a kharif crop which requires high temperature, (above 25°C) and high humidity with annual rainfall above 100 cm. In the areas of less rainfall, it grows with the help of irrigation. 

The basic conditions for the growth of rice crops is ______.

  1. Temperature-25${ \circ } _{ C }$, Rainfall-100 cm-200 cm

  2. Temperature-15-20${ \circ } _{ C }$, Rainfall-50 cm-75 cm.

  3. Temperature-10-15${ \circ } _{ C }$, Rainfall-25 cm-50 cm.

  4. Temperature-05-10${ \circ } _{ C }$, Rainfall-05 cm-20 cm.


Correct Option: A
Explanation:

For rice production, it is essential that the production fields receive a mean precipitation of 100-200 cm every year. Rice cultivation needs 25°C temperature.

Which one of the following state groups has abundant rice production?

  1. Punjab, Haryana

  2. Karnataka, Tamil Nadu

  3. Bengal, Bihar

  4. Gujarat, Maharashtra


Correct Option: C
Explanation:

Rice is the staple food crop of a majority of the people in India. Our country is the second largest producer of rice in the world after China. It is the leading crop of West Bengal occupying about three-fourth of its cropped area. 

Rice is cultivated in all districts of Bihar. Autumn rice, aghani rice, and summer rice are three different varieties of rice grown at three different times of the year. The average production of rice is around 5 million tonnes each year.

One of the largest rice producing state is _________.

  1. Kerala

  2. Gujarat

  3. Punjab

  4. Andhra Pradesh


Correct Option: D
Explanation:

Rice occupies about one-third of the total cropped area of the state. Although the crop is grown throughout the state five districts West Godavari, Krishna, East Godavari and Guntur together contribute more than half of the State's rice production. 

The intensive utilisation of water in the cultivation of rice has led to ___________.

  1. Land upgradation

  2. Land degradation

  3. Less production

  4. Shortage of food


Correct Option: B
Explanation:

The intensive utilisation of water for irrigation has resulted into land degradation. It is observed that farmers pump groundwater to grow water-intensive crops in low rainfall areas. This results into land degradation.

Which one of the following is the biggest producer of rice?

  1. West Bengal

  2. Punjab

  3. Madhya Pradesh

  4. Rajasthan


Correct Option: A
Explanation:

  • India stands second in the production of rice producing 155.682 Million Metric Tonnes per annum after China with highest production. Rice is the staple food for Indians and India’s climate is very much suitable for rice cultivation.
  • In India, West Bengal is the leading rice producer. In West Bengal the productivity of rice increased from 1.02 t/ha in 1966‐67 to 2.59 t/ha in 2006‐07. With gradual increase in area, the production is nearly doubled in rabi season. The overall coverage of high yielding varieties is around 92%.

Which one of the following countries is the largest producer of rice in the world?

  1. China

  2. Japan

  3. Phillippines

  4. Bangladesh


Correct Option: A
Explanation:

  • Rice is an important staple food crop for more than 60 per cent of the world people.
  • Major share of rice is cultivated during Kharif season.
  • China is the leading rice producer with 205.463 Million Metric Tons per year.
  • India occupies next position in rice production after China.

A hot and wet climate is favourable for growing which of the following crops?

  1. Rice

  2. Wheat

  3. Jowar

  4. Ragi


Correct Option: A
Explanation:

Hot and wet climate is favorable for cultivation of rice. Rice is grown in the months of April to October which includes summer and rainy seasons providing essential hot and wet climate. Hence rice is a kharif crop.

India ranks ________ in the world in production of rice.

  1. 1st

  2. 2nd

  3. 3rd

  4. 4th


Correct Option: B
Explanation:

India stands second in the production of rice producing 155.682 Million Metric Tonnes per annum after China with highest production. Rice is the staple food for Indians and India’s climate especially the Deccan plateau region is very much suitable for rice cultivation.

Aus, Aman and Boro are varieties of _________.

  1. Tea

  2. Coffee

  3. Rice

  4. Wheat


Correct Option: C
Explanation:

  • Aman, Aus and Boro are rice varieties. Rice is usually sown thrice.
  • Aman: This variety is sown in the rainy season (July-August) and harvested in winter. This is mainly produced.
  • Aus: Rice sown in summer along with the pre-monsoonal showers and harvested in autumn. The quality of this rice is rough.
  • Boro: Rice sown in winter and harvested in summer. This is also called spring rice.

The State which is the largest producer of paddy in India is _________.

  1. West Bengal

  2. Punjab

  3. Haryana

  4. Karnataka


Correct Option: A
Explanation:

If we talk about the world then, China is the largest producer of paddy and India is the second largest. While talking about the states West bengal is the largest producer of paddy followed by uttar pradesh. Rice is one of the chief grains of India. It is a kharif crop. It is also grown through irrigation.

Which of the following factors is not essential for the cultivation of paddy?

  1. 100 to 200 cms of rainfall

  2. Fertile loamy soil

  3. Stagnant water in the fields

  4. Sloping land


Correct Option: D
Explanation:

It is a kharif crop. It requires high temperature and humidity. It requires annual rainfall to be about 100 cm. It grows with the help of irrigation and so less rainfall is required and so the land should not be slopy. If the land is slopy the water will flow away.

Match the following:

List-I(Crops) List-II(Geographical conditions)
A. Barley 1. Hot and dry climate with poor soil
B. Rice 2. Cool climate with poorer soil
C. Millets 3. Warm and moist climate with high altitude
D. Tea 4. Hot and moist climate with rich soil
  1. A - 2, B - 4, C - 1, D - 3

  2. A - 3, B - 4, C - 1, D - 2

  3. A - 2, B - 1, C - 4, D - 3

  4. A - 3, B - 2, C - 4, D - 1


Correct Option: A
Explanation:

          Crops                   Geographical conditions

  A. Barley                    1.  Cool climate with poorer soil        
  B. Rice                        2. Hot and moist climate with rich soil
  C. Millets                      3. Hot and dry climate with poor soil
  D. Tea                             4. Warm and moist climate with high altitude 

What is the main advantage of transplantation method in rice cultivation?

  1. This method ensures maximum utilization of land

  2. It is helpful in achieving an economical use of water and a highest yield 

  3. It helps in early harvesting

  4. The draining of water from the field before harvesting is made easy


Correct Option: B
Explanation:
Advantages of transplanting:

Plant population becomes more assured.
Since nurseries occupy only 1/10 of area of the main crop, the irrigation, control of insects and diseases and other management become easier to reduce the cost of raising seedlings as compared to a broadcast wet crop of the same age. Nurseries raised in advance, enable the crop to be planted in the field at the right time.
The seedlings are grown up at the time of transplanting and they are able to compete with young weeds that spring up. Weed control and other inter-cultural operation are much easier, particularly in row planting.

Which region is known as the 'Rice Bowl of India'?

  1. Indo-Gangetic Plain

  2. Krishna-Godavari Delta region

  3. North-East region

  4. Kerala and Tamil Nadu


Correct Option: B
Explanation:
rice bowl of Krishna-Godavari Delta region
Krishna-Godavari Delta region is historically called the “Rice Bowl of India”, although the same term is also used for Chhattisgarh. In Andhra Pradesh itself, East Godavari district is known as the rice bowl of Andhra Pradesh.

Which of the following is a tropical monsoon crop?

  1. Jowar

  2. Chillies

  3. Rice

  4. Ragi


Correct Option: C
Explanation:

Rice is a tropical monsoon crop. The tropical monsoon climate experiences abundant rainfall like that of the tropical rain forest climate, but it is concentrated in the high-sun season

- Hide questions