Chapter--15 Improvement in food Resources Extra Questions

1.  Explain any one method of crop production which ensures high yield.

Explanation:

One strategy used for high-yield plant breeding is plant breeding, which is used to increase the variety of products by mating plants. Plants with desired traits are selected from a variety of sources, and these varieties are then crossed or hybridized to produce a product or plant with the desired traits.


2. Why are manure and fertilisers used in fields?

Explanation:

To enhance the soil's condition and increase output, manures and fertilizers are used. They also aid in illness management. By providing minerals to the soil, manure and fertilizers replenish the soil. They are great providers of potassium, phosphorus, and nitrogen, which help plants grow healthily. The primary benefit of manures and fertilizers is increased soil productivity.


3. What are the advantages of inter-cropping and crop rotation?

Explanation:

Inter-cropping

  • reduces the likelihood that entire harvests will be spoiled by controlling pests and mice

  • reduced likelihood of dirt runoff

  • decreased crop loss with good output

  • less need for water

Crop Rotation

  • Two or three products can be grown by farmers each year.

  • Pulses use very little fertilizer because they obtain their nitrogen straight from the environment.

  • Easy cultivation of both fruits and veggies is possible when there is a sufficient quantity of nutrients.


4. What is genetic manipulation? How is it useful in agricultural practices?

Explanation:

Transferring genes from one creature to another is referred to as genetic modification. In this case, a specific gene is inserted inside the diploid cell, creating a mutant plant.

An illustration of a genetically modified product is BT Cotton, which contains bacterial genes that guard the plant against insects. To defend themselves from parasites, plants like brinjal, cabbage, rice, cauliflower, and maize products use these.


5. How do storage grain losses occur?

Explanation:

There are many abiotic and biotic variables that contribute to storage food losses.

Abiotic variables


  • Humidity

  • Air

  • Temperature

  • Flood

  • Wind


Biotic components


  • Insects

  • Rodents

  • Pesticides

  • Bacteria

  • Mites

  • Birds


6.  How do good animal husbandry practices benefit farmers?

Explanation:

Farmers gain from good livestock care in the following ways:

  • yields from livestock of high grade

  • improved milk supply consistency

  • Use in farming for tilling, watering, and hauling


7. What are the benefits of cattle farming?

Explanation:

The advantages of raising livestock include

  • Using cattle in agriculture is common.

  • creation of superior livestock

  • reason of milking and flesh

  • The leather and wool industries use cow hide as a raw material.


8. For increasing production, what is common in poultry, fisheries and bee-keeping?

Explanation:

The most popular technique for boosting output in fisheries, beekeeping, and livestock is cross-breeding. The native varieties of desirable characteristics are chosen, and the exotic species of fish, bees, and poultry with desirable features are permitted to mate with them.

Techniques for cross-breeding are used in fisheries, beekeeping, and poultry for boosting output. Along with these methods, routine repair procedures are helpful in raising output.


9. How do you differentiate between capture fishing, Mari culture and aquaculture?

Explanation:

  • Capture Fishing: Fish are caught using a method called capture fishing from a variety of natural resources, including the sea, rivers, lakes, and pools.


  • Mari culture: It is the practice of raising fish in aquatic environments, such as mullets, prawns, oysters, and bhetki, for business purposes.


  • Aquaculture: Fish are cultured in both freshwater and oceanic environments through aquaculture.