Soil Science - Study Mode

[#511] Nitrogen is a major nutrient because
Correct Answer

(C) It is required by plants more

Explanation

Solution: Nitrogen is a major nutrient because it is required in large quantities by plants for proper functioning and growth. Nitrogen is a major component of the chlorophyll molecule, which enables the plants to capture sunlight and synthesize food by the process of photosynthesis, driving plant growth and grain yield. It is also a key element in the nucleic acids DNA and RNA.

[#512] Plant roots comes under which group?
Correct Answer

(D) Macro Flora

Explanation

Solution: Plant roots come under the Macro flora group. Macroflora is a term used for all the plants occurring in a particular area that are large enough to be seen with naked eyes. Soil macro flora creates voids and macropores in the soil so that air and water can move through the soil.

[#513] Red sols are mainly confined to
Correct Answer

(C) Tamil Nadu

Explanation

Solution: Red soils are mainly confined to Tamil Nadu. It is a type of soil that typically develops in warm, temperate and humid climates and comprises approximately 13% of the Earth's soils. It contains thin organic-mineral layers of highly leached soil resting on a red layer of alluvium. Red soils contain a large amount of clay and are generally derived from the weathering of ancient crystalline and metamorphic rock.

[#514] Water potential is maximum in
Correct Answer

(C) Leaves

Explanation

Solution: Water potential is the potential energy of water per unit volume relative to pure water in reference conditions. It quantifies the tendency of water to move from one area to another due to osmosis, gravity, mechanical and matrix effects such as capillary action. In terms of plants, water potential is the measure of potential energy in water and drives the movement of water through plants. Among all the parts of plants, water potential is maximum in Leaves.

[#515] Critical C : S for carbonaceous materials is
Correct Answer

(B) 50 : 1

Explanation

Solution: Carbonaceous material is a ubiquitous component of atmospheric aerosols. From combustion processes, carbon-containing compounds are emitted directly into the atmosphere in particulate form. Critical C : S for carbonaceous materials is 50 : 1.