CBSE Class 8 Science Chapter 1 Crop Management LAQs

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CBSE Chapter 1 Crop Management Long Answer Questions

Question 1. Soham investigates the water holding capacity of four different types of soils. He sets up an experiment for each type of soil as shown in the diagram. Soham records his observation in a table.

CBSE Class 8 Science Chapter 1-Filtration and Volume Measurement Experiment Setup

” Cbse Class 8 Science Chapter 1 Laqs “

Question 2. Which type of soil absorbs the most water?

  1. Clay
  2. Loam
  3. Sand
  4. Silt

Answer: Clay

Soham added the same amount of water to each type of soil. State one more thing that Soham needs to keep the same in his experiment.

Answer: The amount of each soil type on the filter paper must remain the same for the experimental setup

Read And Learn More CBSE Class 8 Science Long Answer Questions

Question 2. Paddy is a major cereal crop in our country.

  1. In which season is paddy cultivated?
  2. Discuss the method of sowing.
  3. What measures must be taken to prevent the spoilage and insect attack of harvested grains?

” Crop Management Long Answer Questions “

Answer:

  1. Paddy is cultivated in the rainy season as it is a Kharif crop
  2. For sowing paddy, seeds are first grown in a nursery, and later, seedlings are transplanted. In the field. This allows us to select only healthy and better seedlings for cultivation
  3. Measures taken to prevent the spoilage or damage of harvested crops from insect attack are
    1. Exposing them to sunlight for drying, as freshly harvested crops have moisture.
    2. Dried neem leaves are kept with stored grains to prevent damage from pests.
    3. Specific chemical treatments are also available for preventing crops from spoilage and insect attacks

CBSE Class 8 Science Chapter 1 Crop Management LAQs” Cbse Class 8 Science Long Answer Questions “

Question 3. Explain various agricultural practices in a sequential manner
Answer: Various agricultural practices are as follows

Preparation of soil. The first step is the preparation of the soil. In this, the soil is loosened and turned up. It helps the plants to grow and develop. The process of loosening and turning the soil is called tilling or ploughing. Sometimes manure is also added to the soil before tilling.

Sowing After preparation of the soil, the second step, called sowing, takes place. It is the process of scattering or planting seeds into the soil before sowing good Good-quality seeds are selected. The seeds should be clean and healthy.

” Manure And Fertiliser Uses In Agriculture “

Adding manure and fertiliser soil supplies minerals and nutrients to the crops. These nutrients are essential for the growth of plants. Sometimes these nutrients are lacking, so substances are added to maintain or replenish the soil. These substances are called manure and fertilisers. Manures and fertilisers are essential to increase crop production

Irrigation: The process of watering the crop plants at regular intervals is called Irrigation. Plants take all the nutrients and minerals in dissolved form. So, water is most essential for the germination of seeds, growth, and development of plants.

Harvesting After maturation, the crop is cut off. This process is called harvesting. It is done by a sickle or by a machine called a harvester.

Storage of the product is one of the most important tasks. To keep the grains for longer, they should be safe from moisture, pests, insects, and other microorganisms.

” Agricultural Practices For Class 8 Cbse “

CBSE Class 8 Science Chapter 1 Crop Management Long Answer Questions

Question 4. As a part of the eco-club activity, students were asked to raise a kitchen garden on the school premises. They were provided with some materials given in the box. List the other materials you would require. How will you plan the garden? Write the steps.

Khurr: water-can, spade, shovel

Answer:

Besides the given tools, the other items required for raising a garden are seeds and seedlings of vegetables, plants from a nursery, kitchen waste, manure, water, soil, etc.

” Soil Fertility And Crop Management Class 8 “

Steps for raising the garden.

  1. Kitchen waste will be collected and composted in a pit.
  2. A patch of land will be identified for the garden.
  3. Soil will be dug up and levelled with the help of a spade.
  4. Sowing of seeds/ transplanting of seedlings will be done at an even distance.
  5. Seeds/seedlings are selected as per the season. Water the plants regularly with a watering can.
  6. Compost or manure will be applied.
  7. Weeds will be removed periodically with the help of Kliurpi.

” Methods Of Sowing Paddy Class 8 “

Question 5. You must have heard farmers talking about soil fertility. What is it? Mention some methods by which the soil fertility can be replenished.
Answer: The ability of soil to supply all the essential plant nutrients to a crop in adequate quantity is called soil Fertility. Repeated growing of crops in the same soil removes various nutrient elements from the soil, due to the soil lose its fertility.

  1. The soil fertility can be replenished or regained by the following methods
  2. By putting manure and fertiliser in the soil.
  3. By practising crop rotation.
  4. By growing leguminous plants or crops like pulses, peas, beans, groundnut, etc..

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