Environmental Studies · Biology

Soil Science and Fertilizers

1,537 Questions

Soil science focuses on soil formation, classification, and fertility management using fertilizers and organic amendments. Agricultural and environmental science exams heavily feature questions on biofertilizers, mycorrhiza, and phytoremediation. Practice these questions to build a strong understanding of soil nutrient cycles.

Phytoremediation techniquesOrganic soil amendmentsBiofertilizers and mycorrhizaNitrous oxide emissionsIn-situ soil remediationGreen manuring effects

Soil Science and Fertilizers Questions

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Organic and mineral nutrients undergo______

  1. Unidirectional

  2. Bidirectional

  3. Multidirectianal

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

Organic material in plants is transferred by phloem while water and mineral nutrients are transferred by xylem. It is a well-known fact that xylem only has unidirectional transport of water while phloem can exhibit bidirectional transport.

So, the correct answer is 'Both A and B'.

Multiple choice botany water absorption and ascent of sap in plants apoplast and symplastic pathway transport of water in plants water transport

Which substances do the plants obtain from the soil for the constitution of the body?

  1. Organic substances

  2. Inorganic substances

  3. Complex substances

  4. Insoluble substances
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Soil contains a large number of inorganic substances in the form of ions which are taken up by the plant through process called ascent of sap
So, the correct answer is 'Inorganic substances'
Multiple choice botany families of angiosperms family fabaceae eudicots family - fabaceae, sativum and solanaceae study of some important families

Plants which are used as green manure in crop fields and in sandy soil is

  1. <p> Crotalaria juncea and Alhagi camelorum</p>

  2. <p> Calotropis procera and Phyllanthus niruri</p>

  3. <p>

    </p><p> Saccharum munja and Lantana camara</p>

  4. <p> Dichanthium annulatum and Azolla nilotica</p>
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In agriculture, green manure is created by leaving uprooted or sown crop parts to grow on the field so that they improve soil properties. In green manure, quick-growing crops such as Crotolaria juncea and Alhagi camelorum which are cultivated and ploughed into the soil which increases crop yield by 30-50%. Crotolaria juncea, commonly known as Indian hemp is a tropical Asian plant belonging to family Fabaceae. Alhagi camerolum, commonly known as camelthorn belongs to family Fabaceae. So, the correct answer is 'Crotolaria juncea and Alhagi camelorum'.

Multiple choice general knowledge impact of technology on livelihoods animal husbandry and fishery cattle farming agriculture sector

With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced.
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of ground water level can be checked.
Select the correct answer using the codes given below

  1. Only 1

  2. 2 and 3

  3. 1 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice general knowledge impact of technology on livelihoods animal husbandry and fishery cattle farming agriculture sector

With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced. 
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of groundwater table can be checked.
Select the correct answer using the codes given below.

  1. Only 1

  2. 2 and 3

  3. 1 and 3

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Micro-irrigation reduces nutrient loss (1) and helps check groundwater depletion (3). Statement 2 is incorrect because it is not the 'only' means of irrigation in dry land farming.

Multiple choice general knowledge impact of technology on livelihoods animal husbandry and fishery cattle farming agriculture sector

With reference to micro-irrigation, which of the following statements is/are correct?
1. Fertiliser/nutrient loss can be reduced.
2. It is the only means of irrigation in dry land farming.
3. In some areas of farming, receding of ground water level can be checked.
Select the correct answer using the codes given below.

  1. Only 1

  2. 2 and 3

  3. 1 and 3

  4. All of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Multiple choice

Which of the following is NOT a common type of fruit tree fertilizer?

  1. Nitrogen

  2. Phosphorus

  3. Potassium

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

Lime is not a common type of fruit tree fertilizer. Nitrogen, Phosphorus, and Potassium are all common fertilizers used for fruit trees.

Multiple choice

The symbiotic relationship between certain plants and fungi, where the fungus helps the plant absorb nutrients from the soil, is known as:

  1. Mycorrhizae

  2. Nitrogen fixation

  3. Rhizobia

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

Mycorrhizae is a mutually beneficial relationship between plants and fungi, where the fungus helps the plant absorb nutrients from the soil, while the plant provides the fungus with carbohydrates.