Tag: improvement in food resources

Quizzes (20) Questions (132)

Questions Related to improvement in food resources

Multiple choice biology improvement in food resources crop yield improvement food supply crop improvement methods and organisations

A nitrogen fixing microbe associated with the fern Azolla in rice fields is:

  1. Frankia

  2. Rhizobium

  3. Spirulina

  4. Anabaena
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Anabaena azollae, a cyanobacterium that lives in symbiotic association with the free-floating water fern Azolla. Anabaena azollae can grow Photo-autotrophically and fixes atmospheric nitrogen. The inoculation of cyanobacteria in rice crops significantly influences the growth of rice crop by secretion of ammonia in floodwater.

Multiple choice evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

Which of the following is formed as a result of the use of quality breeds?

  1. Producing higher yields in a shorter period of time

  2. Not requiring irrigation

  3. Increasing the lifespan of crops by 10 years

  4. Carrying out photosynthesis at night
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Quality breeds are the organism with improved quality or desired quality. It can be done by the breeding process like hybridization. The introduction of desired gene produce higher yields in a shorter time.

So, the correct answer is option A.

Multiple choice evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

In India, the state famous for peanut cultivation is

  1. Gujarat

  2. Goa

  3. Punjab

  4. Tamil nadu
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Peanut is grown mostly in five states namely Andhra Pradesh, Gujarat, Tamil Nadu, Karnataka, and Maharashtra, and together they account for about 90 percent of the crop's total area. Two of these states (Andhra Pradesh and Gujarat) account for more than half of the cultivated area.

So, the correct option is 'Gujrat'.

Multiple choice evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called

  1. Shifting agriculture

  2. Ley farming

  3. Contour farming

  4. Strip farming
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The process of growing of grass or legumes in rotation with grain or tilled crops as a soil conservation method is called Ley farming

So, the correct answer is 'Ley farming' 

Multiple choice evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

Which of the following methods of cultivation makes soil fertile?

  1. Excessive use of chemical fertilizers

  2. Extensive cultivation

  3. Crop rotation

  4. Monocropping
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Crop rotation is the practice of growing of different types of crops in alternate season. The cash crops grown in one season is replaced by leguminous plants in the other season. The nutrients which are used up by the previous crops are regained by the second crops. So, crop rotation maintains soil fertility and prevents soil erosion.

So, the correct answer is option C.

Multiple choice biology improvement in food resources crop yield improvement food supply crop improvement methods and organisations

Monoculture is 

  1. Growing the same crop on the same soil after every two year

  2. Growing different crop on the same soil

  3. Growing the same crop on the same soil after every three year

  4. Growing the same crop on the same soil year after year
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Monoculture is the agricultural practice of producing or growing a single crop, plant, or livestock species, variety, or breed in a field or farming system for a time.

So the correct option is ' Growing the same crop on the same soil year after year'.

Multiple choice evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

Rotation of crops is carried out to

  1. Increase convenience for the farmers

  2. Increase variation in the mineral content of soil

  3. Increase in nitrogen content of the soil

  4. Increase diversity of plant habitats
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The practice of growing a series of different types of crops in the same area in sequenced seasons is called crop rotation.
The advantages of crop rotation are:-
1) It helps in reducing soil erosion.

2) It increases soil fertility and crop yield.
3) The soil of farms do not get deficient of one type of nutrients.
So, the correct answer is 'Increase variation in the mineral content of soil'.

Multiple choice evs improvement in food resources crop yield improvement food supply crop improvement methods and organisations

What are the adverse effects of using high yielding varieties of seeds?

  1. They are expensive

  2. They are require lots of water for irrigation

  3. They have a low productivity.

  4. Both A and B
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Although the high yielding variety of seeds gave a huge amount of production, it has some disadvantages also. They require a lot of water in the field which leads to the decreasing water table. Also, the HYV seeds required higher production cost in terms of irrigation equipment. It also has an adverse effect on the environment, as HVY seeds require more fertilizer to be added to the soil for better production, which decreases the fertility of the soil.

Multiple choice biology improvement in food resources crop yield improvement food supply crop improvement methods and organisations

All trees of a particular species were cut in a forest for making furniture. Which of the following acts wu be in favour of re-establishment of that forest?

  1. Planting trees of those species which were not found in that forest

  2. Planting trees of those species which are still present in that forest

  3. Planting trees of different species which were not present in that forest and show a high growth rate

  4. Planting trees of same species as many as that were cut in that forest
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • If the deforested forest area is replaced with only one species of trees and all other vegetation is prevented from growing back then, a monoculture forest similar to agricultural crops will be the result.
  • However, the reforestation involves planting of different lots of seed of seedlings taken from the area, often of multiple species.
  • In those areas natural regeneration of a wide variety of plant and animal species that can occur.

Multiple choice biology improvement in food resources crop yield improvement food supply crop improvement methods and organisations

Which of the following conditions are developed due to monoculture?

  1. Multiplication of parasites

  2. More food production

  3. Less use of toxic chemicals

  4. Ecosystem balance in undisturbed
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Monoculture involves growing a single crop over a large area, which reduces biodiversity and makes the crop more susceptible to the rapid spread of pests and parasites.