Nutrient Cycling MCQs and Answers

Are you looking for Nutrient Cycling MCQs and Answers for medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-14 (Ecosystem).

Here we composed these Nutrient Cycling MCQs and Answers after reading the chapter on Ecosystem from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.

Nutrient Cycling MCQs and Answers

1. What do organisms require to grow, reproduce and regulate various body functions?

a) Air

b) Nutrients

c) Water

d) Soil

Answer: b


2. What is the amount of nutrients present in the soil at any given time called?

a) Standing state

b) Standing state

c) Moving state

d) Total state

Answer: a


3. What varies in different kinds of ecosystems and also on a seasonal basis?

a) Moving state

b) Standing state

c) Sitting state

d) Total state

Answer: b


4. What happens to the nutrients which are never lost from the ecosystems?

a) Deplete

b) Newly formed

c) Exhaust

d) Recycle

Answer: d


5. What is the movement of nutrient elements through the various components of an ecosystem known?

a) Elemental cycling

b) Gaseous cycling

c) Nutrient cycling

d) Sedimentary cycling

Answer: c


6. What is the nutrient cycle alternatively called?

a) Elemental cycle

b) Gaseous cycle

c) Biogeochemical cycle

d) Sedimentary cycle

Answer: b


7. What does a nutrient cycle involve?

a) Loss of nutrients

b) Sedimentation of nutrients

c) Exhaustion of nutrients

d) Storage and transfer of nutrients

Answer: d


8. How many categories can a nutrient cycle be divided?

a) No type

b) One type

c) Two types

d) Three types

Answer: c


9. What are the essential elements required by organisms for their body-building and metabolism called?

a) Phytochemicals

b) Viruses

c) Bacteria

d) Biogeochemicals

Answer: d


10. Where is the gaseous type of nutrient cycle located?

a) Earth’s crust

b) Land surface

c) Atmosphere

d) Soil

Answer: c


11. Where is the sedimentary type of nutrient cycle located?

a) Land surface

b) Earth’s crust

c) Atmosphere

d) Water

Answer: b


12. What so the environmental factors, e.g., soil, moisture, pH, temperature, etc. regulate?

a) The rate of piling up of nutrients

b) The rate of formation of nutrients

c) The rate of release of nutrients

d) The rate of exhaustion of nutrient

Answer: c


13. What is the function of the reservoir that is the atmosphere and the Earth’s crust?

a) Exhaustion of nutrients

b) Meet with the deficit of nutrients

c) Formation of nutrients

d) Piling up of nutrients

Answer: b


14. Limestone and dolomite are the reservoirs of which cycle?

a) Gaseous cycle

b) Bicycle

c) Ecological cycle

d) Sedimentary cycle

Answer: d


There are many important questions to ask when it comes to nutrient cycling. Here are some frequently asked questions that will help you understand this key ecological process:

FAQs on Nutrient Cycling

1. What is nutrient cycling?

Answer: Nutrient cycling is the process by which nutrients are circulated between different parts of the ecosystem. This includes both biotic and abiotic components, such as plants, animals, bacteria, and rocks.

2. What are the benefits of nutrient cycling?

Answer: Nutrient cycling is important for maintaining ecosystem health. It helps to ensure that plants and animals have the nutrients they need to grow and thrive. Additionally, it helps to recycle nutrients that would otherwise be lost through leaching or other means.

3. What are the key steps in nutrient cycling?

Answer: There are four key steps in nutrient cycling: nutrient uptake, nutrient release, nutrient transport, and nutrient transformation.

4. What are some of the challenges associated with nutrient cycling?

Answer: One of the challenges associated with nutrient cycling is that it can be difficult to track all of the different nutrients that are involved. Additionally, nutrient cycling can be disrupted by human activity, such as deforestation, agricultural runoff, and urbanization.

Have any other questions about Nutrient Cycling? Leave a comment below and we’ll do our best to answer them!

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