Ecosystem - Rajasthan Board (RBSE) STD 12 Science BIOLOGY Questions - Vidyadip

Question types

Ecosystem question types

71 questions across 3 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.

71

Questions

3

Question groups

5

Question types

M.C.Q (0.5 Marks)

1.5 Marks Questions

4 Marks Questions

Sample Questions

Ecosystem questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (0.5 Marks)1 Mark

Which ecosystem has the maximum biomass?

A
Grass ecosystem
B
Pond ecosystem
C
Lake ecosystem
✓
Forest ecosystem

Answer: D.

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Q 2M.C.Q (0.5 Marks)1 Mark

Name of Ramdeo Mishra is associated with which field of research?

✓
Ecology
B
Biotechnology
C
Green revolution
D
Genetics

Answer: A.

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Q 3M.C.Q (0.5 Marks)1 Mark

Which of the following are decomposers?

A
Fungi and algae
B
Fungi and virus
C
Fungi and bacteria
✓
Fungi, bacteria and virus

Answer: D.

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Q 4M.C.Q (0.5 Marks)1 Mark

Going down of inorganic water soluble nutrients into the soil nutrients is called as :

A
Fragmentation
✓
Leaching
C
Catabolism
D
Humification

Answer: B.

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Q 5M.C.Q (0.5 Marks)1 Mark

Which of the following is not a producer?

A
Spirogyra
✓
Agaricus
C
Volvox
D
Nostoc

Answer: B.

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Q 61.5 Marks Questions2 Marks

Mention four significant services that a healthy forest ecosystem provide.

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Q 71.5 Marks Questions2 Marks

Differentiate between primary and secondary succession. Provide one example of each.

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Q 81.5 Marks Questions2 Marks

Why pyramids of energy is always upright?

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Q 91.5 Marks Questions2 Marks

What are the primary and secondary productivities?

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Q 101.5 Marks Questions2 Marks

What do you understand by Food-Chain?

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Q 114 Marks Questions4 Marks

Describe the carbon cycle in nature. How does deforestation affect this cycle?

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Q 124 Marks Questions4 Marks

What is an artificial ecosystem? Describe an agro-ecosystem.

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Q 134 Marks Questions4 Marks

Differentiate following :
(a) Food chain and food web,
(b) Litter and Detritus,
(c) Primary and Secondary Productivity.

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Q 144 Marks Questions4 Marks

Distinguish between the following :
(a) Grazing food chain and detritus food chain
(b) Production and Decomposition
(c) Upright and Inverted Pyramids

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Q 154 Marks Questions4 Marks

Give an account of ecological pyramids by digrammatic representation.###Define ecological pyramids and describe the pyramid of number.###Write about three ecological pyramids with suitable examples.###Describe three ecological pyramids with suitable examples.

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