Ecosystem NEET Questions | Online MCQs Test 06 1

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Ecosystem Questions: Quiz - 6

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Question 1
Energy flow in ecosystem is ____.
A
Bidirectional
B
Multidirectional
C
Unidirectional
D
All around
Question 2
Which one of the following is one of the characteristics of a biological community?
A
Sex-ratio
B
Stratification
C
Natality
D
Mortality
Question 3
Which of the following is an example of man-made ecosystem?
A
Tissue culture
B
Aquarium
C
Herbarium
D
Forest
Question 4
These belong to the category of primary consumers
A
Snakes and Frogs
B
Insects and cattle
C
Eagle and snakes
D
Water insects
Question 5
Which one of the following pairs in mismatched?
A
Tundra - permafrost
B
Coniferous forest - evergreen trees
C
Savanna - acacia trees
D
Prairie - epiphytes
Question 6
Which is the reason for highest biomass in aquatic ecosystem?
A
Benthonic and brown algae
B
Sea grass, and slime molds
C
Nanoplankton, blue green algae, green algae
D
Diatoms
Question 7
Identify the correct type of food chain :

dead animal → blow fly maggots → common frog → snake

A
Decomposer food chain
B
Detrital food chain
C
Grazing food chain
D
Predator food chain
Question 8
The average trophic efficiency of transfer of energy from one trophic level to the. higher trophic level is called
A
Linderman's trophic efficiency rule
B
Exploitation efficiency
C
Assimilation. Efficiency
D
Gross primary production
Question 9
Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs?
A
Prosopis, tree, scrub
B
Saccharum, grass, forest
C
Shorea robusta, herb, tropical rain forest
D
Acacia catechu, tree, coniferous forest
Question 10
In a comparative study of grassland ecosystem and pond ecosystem, it may be observed that
A
primary and secondary consumers are similar
B
the abiotic components are almost similar
C
the biotic components are almost similar
D
both biotic and abiotic components are different
Question 11
The pyramid of energy is always upright for any ecosystem. This situation indicates the fact that
A
Herbivores have a better energy conversion efficiency than carnivores.
B
Producers have the lowest energy conversion efficiency.
C
Carnivores have better energy conversion efficiency than herbivores.
D
Energy conversion efficiency is the same in all trophic levels.
Question 12
Study the following lists:
List – I List – II
A. Population I. Part of the earth consisting of all the ecosystems of the world
B. Community II. Assemblage of all the individuals belonging to different species occurring in an area
C. Ecosystem III. Group of similar individuals belonging to the same species found in an area
D. Ecosphere IV. Interaction between the living organisms and their physical environmental  components
    V. Classification of organisms based on the type of environment.
A
A - I, B - IV, C - V, D - III
B
A - V, B - II, C - III, D - I
C
A - II, B - III, C - V, D - IV
D
A - III, B - II, C - IV, D - I
Question 13
Assertion: Tropical rain forests are disappearing fast from developing countries such as India.

Reason: No value is attached to these forests because these are poor in biodiversity.

The correct answer is:
A
Both Assertion and Reason are true and Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion.
C
Assertion is true, but Reason is false.
D
Both Assertion and Reason are false.
Question 14
Assertion: A network of food chains existing together in an ecosystem is known as a food web.

Reason: An animal like kite cannot be a part of a food web.

The correct answer is:
A
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
C
Assertion is true statement but Reason is false.
D
Both Assertion and Reason are false statements.
Question 15
Assertion: In a food chain members of successive higher levels are fewer in number.

Reason: Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.

The correct answer is:
A
Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B
Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion.
C
Assertion is true statement but Reason is false.
D
Both Assertion and Reason are false statements.
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