The
main role of bacteria in the carbon cycle involves
- chemosynthesis
- digestion or breakdown of organic compounds
- photosynthesis
- assimilation of nitrogenous compounds.
The Correct Option is B
Solution and Explanation
Top Questions on nutrient cycling
- Which of the following is required for the growth of both plants and seeds?
- MHT CET - 2025
- Biology
- nutrient cycling
- Choose the correct statements with respect to decomposition from the following:
(A) Decomposition is an anaerobic process.
(B) Decomposition rate of detritus depends upon the chemical nature of it.
(C) Water-soluble organic nutrients go into the soil and get precipitated in the process of leaching.
(D) Humification follows mineralisation.
Choose the correct answer from the options given below:- CUET (UG) - 2024
- Biology
- nutrient cycling
- The process of mineralization by microorganisms helps in the release of:
- CUET (UG) - 2024
- Biology
- nutrient cycling
- Toxicity of which micronutrient induces deficiency of iron, magnesium and calcium ?
- KCET - 2023
- Biology
- nutrient cycling
- Deficiency of which nutrient causes yellowing of leaves and stunted growth?
- CUET (PG) - 2023
- Agroforestry
- nutrient cycling
Questions Asked in NEET exam
The current passing through the battery in the given circuit, is:
- NEET (UG) - 2025
- Current electricity
A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :
- NEET (UG) - 2025
- Current electricity
- Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radii \(r_A\) and \(r_B\) respectively. On supplying an equal amount of heat to both the cylinders, their pressures remain constant and their pistons are displaced by 16 cm and 9 cm respectively. If the change in their internal energies is the same, then the ratio \(r_A / r_B\) is:
- NEET (UG) - 2025
- Thermodynamics
- Which of the following enzyme(s) are NOT essential for gene cloning?
A. Restriction enzymes
B. DNA ligase
C. DNA mutase
D. DNA recombinase
E. DNA polymerase- NEET (UG) - 2025
- Molecular Biology
- Which of the following organisms cannot fix nitrogen? A. Azotobacter
B. Oscillatoria
C. Anabaena
D. Volvox
E. Nostoc
Choose the correct answer from the options given below:- NEET (UG) - 2025
- Nitrogen Fixation
Concepts Used:
Nutrient Cycling
“A nutrient cycle is defined as the cyclic pathway by which nutrients pass-through, in order to be recycled and reutilised. The pathway comprises cells, organisms, community and ecosystem.”
How nutrient cycling differs from energy flow?
The energy flow refers to the transfer of energy from one trophic level to another in the food chain and food web. It is unidirectional and energy is lost from one trophic level to another in the form of heat. Sunlight is the ultimate energy source.
Nutrient cycling is a cyclic process that encompasses the movement of nutrients from the physical environment to living organisms and back to the environment. Nutrients are present on the earth where they are recycled, transformed into different forms and reutilized.
