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 economics environment and sustainable development need for sustainable development environmental economics sustainable development

What are the benefits of using compost?

  1. It saves the land from harmful effects of chemical fertilisers

  2. Civic authorities are benefited too as they have to dispose off a reduced quantity of waste

  3. Both A and B

  4. None of the Above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Composting provides a sustainable alternative to chemical fertilizers, reducing soil degradation, and helps municipal authorities by diverting organic waste from landfills.

Multiple choice

How does carbon get into the soil?

  1. When an animal dies

  2. When a plant dies

  3. When an animal urinates

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

When plants and animals die, their organic matter decomposes, returning carbon to the soil. Animal waste also contributes organic carbon to the soil environment.

Multiple choice

T/F: Plants can be grown without soil.

  1. TRUE

  2. FALSE
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plants can be grown in water (hydroponics) or air (aeroponics) without traditional soil, provided they receive necessary nutrients.

Multiple choice

T/F: Soil provides most of the material for plant growth.

  1. TRUE

  2. FALSE
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants primarily derive their mass from carbon dioxide in the air and water, not from the soil itself. Soil provides essential minerals and structural support, but it is not the main source of plant biomass.

Multiple choice

Which of the following materials are most needed for plant growth?

  1. pollination & water

  2. air & water

  3. soil & air

  4. soil & pollination
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants primarily require water and air (carbon dioxide and oxygen) to carry out photosynthesis and cellular respiration. While soil is important for nutrients, air and water are the fundamental building blocks for growth.

Multiple choice geography abiotic resources: land, soil and water classification of soils abiotic resources soils in india

Organic matter which is useful to plants is usually found most abundantly in ____________.

  1. sand

  2. clay

  3. sub-soil

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

Topsoil, which corresponds to the upper layers of the soil profile, contains the highest concentration of organic matter and microorganisms. This organic material, known as humus, is formed from decomposed leaves, plants, and organisms, providing essential nutrients for plant growth. Sub-soil and sandy layers contain significantly less organic material.

Multiple choice geography abiotic resources: land, soil and water classification of soils abiotic resources soils in india

Name the fertilizer that is used to improve the fertility in alluvial soil.

  1. Nitrogen

  2. Phosphate

  3. Potash

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

The organic fertilizers are used to improve the fertility of alluvial soil. This type of fertilizer originates from an organic source. Some examples include fish extracts, manure, and compost.