NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Carbon Cycle Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.
MCQs on Carbon Cycle
1. This factor contributes to the carbon cycle
(a) fossil fuel combustion
(b) respiration
(c) photosynthesis
(d) all of these
Answer
Answer: (d)
2. The source of carbon to plants in the carbon cycle is
(a) fossil fuels
(b) carbonate rocks
(c) atmospheric carbon dioxide
(d) all of the above
Answer
Answer: (c)
3. The role of bacteria in the carbon cycle is
(a) Breakdown of organic compounds
(b) Chemosynthesis
(c) Photosynthesis
(d) Assimilation of nitrogen compounds
Answer
Answer: (a)
4. In the carbon cycle, the human body returns carbon to the atmosphere through this way:
(a) formation of glucose
(b) waste products
(c) photosynthesis
(d) cellular respiration
Answer
Answer: (d)
5. Respiration and photosynthesis are central to this process
(a) nitrogen cycle
(b) phosphorous cycle
(c) carbon cycle
(d) sulphur cycle
Answer
Answer: (c)
6. The difference between the phosphorous cycle and carbon cycle lies in the fact that
(a) the phosphorous cycle does not include a gaseous phase but the carbon cycle does
(b) phosphorous does not enter living entities but carbon enters
(c) the phosphorous cycle includes a solid phase, the carbon cycle does not
(d) primary reservoir of the phosphorous cycle is the atmosphere, but rocks are the primary reservoirs for carbon cycle
Answer
Answer: (a)
7. Most of the global warming is due to the perturbation of which of these cycles?
(a) Global nitrogen cycle
(b) Global carbon cycle
(c) Global water cycle
(d) All of these cycles equally contribute
Answer
Answer: (b)
8. This carbon isotope is radioactive and very rare
(a) Carbon – 11
(b) Carbon – 12
(c) Carbon – 13
(d) Carbon – 14
Answer
Answer: (d)
9. By this method, the majority of carbon moves from the lithosphere to the atmosphere
(a) erosion
(b) deposition
(c) weathering
(d) fossil fuel burning
Answer
Answer: (d)
10. These entities sequester most carbon from the atmosphere
(a) Plants
(b) Archaea
(c) Bacteria
(d) Insects
Answer
Answer: (a)