Which one of the following is NOT correct about organic farming?
- A.It does not use genetically modified seeds
- B.Synthetic pesticides or fertilizers are not used
- C.It uses minimal crop rotation
- D.It uses ecologically protective practices
Correct answer
Explanation
The correct answer is C, It uses minimal crop rotation. Organic farming relies heavily on crop rotation, not on as little of it as possible, so this is the statement that is not correct.
Organic farming grows crops without synthetic fertilisers, synthetic pesticides or genetically modified seeds. In their place it keeps the soil fertile with compost, farmyard manure, green manure and bio-fertilisers, and it controls pests with natural enemies, neem-based sprays and crop diversity. Rotating crops, for example following a cereal with a legume such as gram or moong, adds nitrogen to the soil, breaks the life cycle of pests and diseases and keeps the soil in good health, so rotation is at the heart of the method. In India, Sikkim was declared the first fully organic State in 2016.
Option A is wrong to pick because organic farming does avoid genetically modified seeds. Option B is wrong to pick because avoiding synthetic pesticides and fertilisers is its defining rule. Option D is wrong to pick because it does use ecologically protective practices that guard soil, water and biodiversity.
Exam tip: Organic farming means no synthetic chemicals and no GM seeds, with plenty of manure and crop rotation; Sikkim was the first fully organic State.
Practice Questions
View allWhat is 'Climate Neutral Now' initiative?
1. It encourages organizations and other interested stakeholders to act now in order to achieve a carbon neutral world by 2030.
2. It derives its aims from the Paris Agreement.
Select the correct answer using the code given below :
- A.1 only
- B.2 only
- C.Both 1 and 2
- D.Neither 1 nor 2
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Climate Neutral Now takes its aim from the Paris Agreement, but the target it works towards is a climate-neutral world by the middle of the century, not by 2030.
Read the full explanation →Which of the following statements is/are correct about 'Action for Climate Empowerment' (ACE)?
1. It is a term adopted by the UN Framework Convention on Climate Change.
2. This term is related to the Paris Agreement.
Select the correct answer using the code given below:
- A.1 only
- B.2 only
- C.Both 1 and 2
- D.Neither 1 nor 2
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Action for Climate Empowerment is the UNFCCC's own name for its work on climate education and public awareness, and it covers the Paris Agreement too.
Read the full explanation →Consider the following statements :
1. Agricultural soils release nitrogen oxides into environment.
2. Cattle release ammonia into environment.
3. Poultry industry releases reactive nitrogen compounds into environment.
Which of the statements given above is/are correct?
- A.1 and 3 only
- B.2 and 3 only
- C.2 only
- D.1, 2 and 3
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Fertilised soils, cattle and poultry are all major sources of reactive nitrogen in the environment. Reactive nitrogen means nitrogen in forms other than the inert N₂ gas of the air, such as ammonia, nitrogen oxides, nitrous oxide and nitrate.
Read the full explanation →"If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys." Which one of the following functions of wetlands best reflects the above statement ?
- A.The water cycle in wetlands involves surface runoff, subsoil percolation and evaporation.
- B.Algae form the nutrient base upon which fish, crustaceans, molluscs, birds, reptiles and mammals thrive.
- C.Wetlands play a vital role in maintaining sedimentation balance and soil stabilization.
- D.Aquatic plants absorb heavy metals and excess nutrients.
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Kidneys filter waste from the blood, and wetlands likewise filter pollutants out of the water that passes through them.
Read the full explanation →What is/are unique about 'Kharai camel', a breed found in India?
1. It is capable of swimming up to three kilometres in seawater.
2. It survives by grazing on mangroves.
3. It lives in the wild and cannot be domesticated.
Select the correct answer using the code given below.
- A.1 and 2 only
- B.3 only
- C.1 and 3 only
- D.1, 2 and 3
Show answer
The Kharai camel of Kutch in Gujarat can swim through seawater to reach mangrove islands, where it feeds on mangrove leaves.
Read the full explanation →