0

Crop Production and Its Management (Class VIII)

Attempted 0/15 Correct 0 Score 0

Which of the following crops are based on season of cultivation?

  1. Biennials crops

  2. Kharif crops

  3. Perennials

  4. Annuals

  5. Cash crops


Correct Option: B
Explanation:

These crops are grown in the rainy season.

Which of the following processes is not related to ploughs?

  1. Tilling soil

  2. Smoothing out the surface of the soil

  3. Adding fertilisers

  4. Adding manure

  5. Remove weeds


Correct Option: B
Explanation:

A harrow is an implement for breaking up and smoothing out the surface of the soil.

Why is organic manure better than fertilisers?

  1. Decreases the number of microbes

  2. Easily absorbed

  3. Improves the texture of the soil

  4. Easily washed away by water

  5. Decreases the water holding capacity of the soil


Correct Option: C
Explanation:

Manures add plenty of humus to the soil and improves the texture of the soil.

Which of the animals are not used for ploughing in the given options?

  1. Elephants, camels

  2. Horses, camels

  3. Oxen, elephants

  4. Bulls, donkeys

  5. Horses, bulls


Correct Option: D
Explanation:

Donkeys are used for transportation.

Which of the following things is/are needed in less quantity by the crops to grow up?

  1. Sunlight

  2. Water

  3. Oxygen

  4. Carbon

  5. Chlorine


Correct Option: E
Explanation:

Elements which are needed by the plants in very small quantities are called micronutrients.

Which of the following is true for rabi crops?

  1. Grown in the rainy season

  2. Complete their life cycle in one year

  3. Live for several years

  4. Grown in the winter season

  5. Grown for commercial purposes


Correct Option: D
Explanation:

Rabi crops: Grown in the winter season

Which process is used for supplying water to crop plants in fields?

  1. Irrigation

  2. Threshing

  3. Sowing

  4. Ploughing

  5. Winnowing


Correct Option: A
Explanation:

The process of supplying water to crops is known as irrigation.

Which of the following tools has replaced the ploughs nowadays?

  1. Iron plough

  2. Ploughshare

  3. Wooden plough

  4. Ploughshaft

  5. Hoe


Correct Option: A
Explanation:

This is the correct option.

Which of the following sequences of steps is correct for cultivating a crop?

  1. (1) Preparation of soil; (2) Sowing; (3) Adding manure and fertilisers; (4) Irrigation; (5) Protection from weeds; (6) Storage

  2. (1) Preparation of soil; (2) Sowing; (3) Adding manure and fertilisers; (4) Irrigation; (5) Protection from weeds; (6) Harvesting; (7) Storage

  3. (1) Preparation of soil; (2) Sowing; (3) Adding manure and fertilisers; (4) Protection from weeds; (5) Harvesting; (6) Storage

  4. (1) Preparation of soil; (2) Sowing; (3) Adding manure and fertilisers; (4) Irrigation; (5) Protection from weeds; (6) Harvesting; (7) Threshing

  5. (1) Preparation of soil; (2) Sowing; (3) Adding manure and fertilisers; (4) Irrigation; (5) Threshing; (6) Harvesting; (7) Storage


Correct Option: B
Explanation:

(1) Preparation of soil; (2) Sowing; (3) Adding manure and fertilisers; (4) Irrigation; (5) Protection from weeds; (6) Harvesting; (7) Storage

Which of the following characteristics is not related to a fertiliser?

  1. It is an organic compound.

  2. It is prepared in factories.

  3. It is soluble in water.

  4. Its effect is of shorter duration.

  5. It is rich in plant nutrients.


Correct Option: A
Explanation:

Fertilisers are inorganic compounds.

Which of the following chemical substances is used to kill the insects?

  1. Bordeaux mixture

  2. Arsenic

  3. Dichloro diphenyl trichloro ethane

  4. Zinc phosphate

  5. 2-4-Dichloro phenoxy acetic acid


Correct Option: C
Explanation:

The chemical substances which are used to kill the insects are called insecticides. For example: DDT

Which of the following fertilisers/processes is/are derived from living organisms?

  1. Biofertilisers

  2. Manures

  3. Hybridisation

  4. Biocides

  5. Weedicides


Correct Option: A
Explanation:

Fertilisers which are derived from living organisms are called biofertilisers.

Which of the following is the modern method of irrigation that helps us to use water?

  1. Dhekli system

  2. Moat system

  3. Drip system

  4. Chain pump system

  5. Rahat system


Correct Option: C
Explanation:

In this system, the water falls drop by drop just at the position of the roots.

Which of the following is an example of a rabi crop?

  1. Paddy

  2. Maize

  3. Watermelon

  4. Cotton

  5. Mustard


Correct Option: E
Explanation:

Sowing of mustard takes place from October to December. So, it is a rabi crop.

What is meant by the zayad crops?

  1. Crops which are grown in the winter season

  2. Crops which are grown in two years or two seasons

  3. Crops which are grown between the kharif and rabi seasons

  4. Crops which are grown in the rainy season

  5. Crops which are grown for several years


Correct Option: C
Explanation:

Zayad crops Example: Watermelon

- Hide questions