Ecosystem: MCQs Quiz – 5 1


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Ecosystem Questions:  MCQs (Multiple Choice Questions) in Quiz Format on Ecosystem with answers. Quiz No. 5
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Ecosystem Questions: Quiz - 5

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Question 1
Littoral zone is located along the
A
High mountains
B
Sea
C
Rivers
D
Desert
Question 2
Which one of the following correctly represents an organism and its ecological niche?
A
Vallisneria and pond
B
Desert locust (Schistocerca) and desert.
C
Plant lice (aphids) and leaf
D
Vultures and dense forest
Question 3
In a lake, phytoplankton grow in abundance in
A
Littoral zone
B
Limnetic zone
C
Profundal zone
D
Benthic region
Question 4
Actively moving organism in aquatic ecosystem
A
Benthos
B
Phytoplankton
C
Zoo plankton
D
Nekton
Question 5
Which of the following is primary consumer?
A
Producer
B
Carnivore
C
Top carnivore
D
Herbivore
Question 6
Deserts, grasslands, forests and tundra are the examples of
A
Biomes
B
Biogeographical regions
C
Ecosystems
D
Biospheres
Question 7
Which one of the following is commonly found in temperate coniferous forest?
A
Quercus
B
Dipterocarpus
C
Shorea robusta
D
Pinus wallichiana
Question 8
Plant species having a wide range of genetical distribution evolve into a local population known as
A
Ecotype
B
Biome
C
Ecosystem
D
Population
Question 9
Which of the following is expected to have the highest value (gm/m2/yr) in a grassland ecosystem?
A
Tertiary production
B
Gross production (GP)
C
Net production (NP)
D
Secondary production
Question 10
Assertion (A): True xerophytes store water in the form of mucilage which helps to withstand prolonged period of drought.

Reason (R): Vascular and mechanical tissues are well developed in true xerophytes.

The correct answer is:

A
Both A and R are true and R is the correct explanation of A
B
Both A and R are true, but R is not the correct explanation of A
C
A is true, but R is false
D
A is false, but R is true
Question 11
Niche is defined as the
A
Position of species in a community in relation to other species
B
Place where organism lives
C
Place where organism lives and performs its duty
D
Place where population perform their duties
Question 12
The rate of formation of new organic matter by rabbit in a grassland, is called
A
Net productivity
B
Secondary productivity
C
Net primary productivity
D
Gross primary productivity
Question 13
The correct sequence of plants in a hydrosere is
A
Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
B
Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox
C
Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
D
Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
Question 14
Which of the following is false?
A
Rate of succession is faster in secondary succession.
B
Quantity of biomass in a trophic level at a particular period is called as standing crop.
C
The energy content in a trophic level is determined by considering a few individuals of a species in that trophic level.
D
The succession that occurs in newly cooled lava is called primary succession.
Question 15
The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do a, b and c represent respectively?  
A
a - Regulator, b - Conformer, c - Partial regulator
B
a - Conformer, b - Regulator, c - Partial regulator
C
a - Regulator, b - Partial regulator, c - Conformer
D
a - Partial regulator, b - Regulator, c - Conformer
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There are 15 questions to complete.


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