Biodiversity and Conservation Test

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Biodiversity and Conservation Test - 60

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Weekly Quiz Competition

Question 1
1 / -0

Alpha diversity is biodiversity present

A
within community

B
between communities

C
ranges of communities

D
none of these.

Solution

Ecological diversity is of three types:
(i) Alpha diversity
(ii) Beta diversity
(iii) Gamma biodiversity.
Question 2
1 / -0

Species diversity ______ as one moves from high to low altitudes.

A
increases

B
decreases

C
first increases then decreases

D
first decreases then increases

Solution

Biodiversity changes with the change in altitude. It increases as one moves from higher to lower altitudes.
Question 3
1 / -0

'Broadly utilitarian' argument for the conservation of biodiversity does not include

A
Bioprospecting

B
Pollination

C
Aesthetic value

D
Climatic regulation

Solution

Bioprospecting is the exploration of molecular, genetic and species level-diversity for gaining the products of economic importance. It comes under narrowly utilitarian category.
Question 4
1 / -0

Vertical distribution of different species occupying different levels in dense vegetation is called.

A
Stratification

B
Species composition

C
Standing crop

D
Trophic structure
Solution
Correct option: A

Explanation:
Vertical distribution of different species occupying different levels in dense vegetation is called stratification. For example- In a forest trees occupy top vertical strata followed by shrubs and herbs. And grasses form the lowest strata.
Species composition is the identity of all the different organisms that make up a community.
A standing crop is the total biomass of the living organisms present in a given environment.
Trophic structure describes the system or organization of organisms into different trophic levels based on the amount of energy the organism consumes.

Thus, Option A is correct.
Question 5
1 / -0

Niche overlap indicates

A
mutualiism between two species

B
active cooperation between two species

C
two different parasites on the same host

D
sharing of one more resources between the two species

Solution

Ecological niche means the total interaction of a species with its environment or its functions position on status in an ecosystem. Ecological niche depends on the species structural adaptions, physical responses and behavior Niche overlap means that one or more resources are shared beteen two species .
Question 6
1 / -0

The narrowly utilitarian arguments for biodiversity conservation include which of the following from the given list?
(i) Industrial products like dyes, lubricants
(ii) Ecosystem services like photosynthesis
(iii) Pollinators layer of bees, birds and bats
(iv) Firewood, fibre and construction material
(v) The aesthetic pleasure of walking through thick woods
(vi) Products of medicinal importance
(vii) Watching spring flowers in full bloom

A
(i), (ii), (v) and (vii)

B
(ii), (iii), (v) and (vii)

C
(i), (iv) and (vi)

D
(iii), (v), (vi) and (vii)

Solution

The narrowly utilitarian arguments for conserving biodiversity are
obvious; humans derive countless direct economic benefits from nature food (cereals, pulses, fruits), firewood, fibre, construction material,
industrial products (tannins, lubricants, dyes, resins, perfumes ) and
products of medicinal importance. More than 25 per cent of the drugs
currently sold in the market worldwide are derived from plants and 25,000
species of plants contribute to the traditional medicines used by native
peoples around the world. Nobody knows how many more medicinally
useful plants there are in tropical rain forests waiting to be explored.
With increasing resources put into ‘bioprospecting’ (exploring molecular,
genetic and species-level diversity for products of economic importance),
nations endowed with rich biodiversity can expect to reap enormous
benefits.
So the correct option is '(i), (iv) and (vi)'.
Question 7
1 / -0

Select the incorrect statement.

A
Species diversity increases as we move away from the equator towards the poles.

B
Stellar's sea cow and passenger pigeon got extinct due to over exploitation by man.

C
Lantana and Eichhornia are invasive weed species in India.

D
Among animals, insects are the most species-rich taxonomic group.
Solution
Correct Option: A
Explanation:
Species diversity is the variety in the number and richness of the species of a region.
Tropical rain forests in the equatorial regions and coral reefs have fragile environment and vulnerable habitats.
They also have the maximum biodiversity despite having little seasonal changes in temperature and moisture.
Very harsh conditions e.g., polar regions, results in reduction in biodiversity.
Dodo, passenger pigeon and Steller's sea cow have become extinct in the last 500 years due to overexploitation by humans.
Lantana, Eichhornia and Parthenium are all exotic species, which had been introduced in India.
Among animals, the most species-rich taxonomic group is class Insecta.

So, the correct answer is option A.
Question 8
1 / -0

The term "the evil quarter" is related with four major causes of

A
Forest loss

B
Population explosion

C
Air pollution

D
Biodiversity losses.

Solution

There are four major causes of biodiversity losses which are collectively called as the evil quartet. These are habitat loss and fragmentation, over exploitation, alien species invasion and co-extinctions.
So, the correct answer is 'biodiversity losses'
Question 9
1 / -0

According to IUCN, some of the recent extinctions include
(i) Dodo (ii) Quagga
(iii) Indian gazelle (iv) Thylacine
(v) Steller's sea cow (vi) Bali- subspecies of tiger

A
(i), (ii), (iii) and (iv)

B
(ii), (iii), (iv) and (vi)

C
(i), (ii), (iv) and (v)

D
(iii), (iv), (v) and (vi)
Solution
The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1965, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species.
It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world.
Species such as Dodo, Quagga, Thylacine, and Steller's sea cow are recent extinctions.
So the correct option is '(i), (ii), (iv) and (v)'.
Question 10
1 / -0

Which option correctly describes the equations for curves A and B, in the given graph of species-area relationship?

A
A - $$S = CA^z$$; B - $$Log S = Log C + Z log A$$

B
A - $$Log S = Log C + Z log A$$; B - $$S = CA^z$$

C
A - $$Log C = Log S + Z log A$$; B - $$S = CA^z$$

D
A - $$S = CA^z$$; B - $$Log C = Log S + Z log A$$
Solution
The relationship between the area of a habitat, or of part of a habitat, and the number of species found within that area is described by the species-area curve.
It says that log S = log C + Z log A.
Here, S is the number of species, A is the habitat area, and Z is the slope of the species-area relationship. Larger areas tend to contain larger numbers of species.
So, the correct answer is 'A - S=CAz; B - LogS=LogC+ZlogA'.

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Biodiversity and Conservation Test - 60

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Biodiversity and Conservation Test - 60

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SHARING IS CARING

Question 1

within community

between communities

ranges of communities

none of these.

Solution

Question 2

increases

decreases

first increases then decreases

first decreases then increases

Solution

Question 3

Bioprospecting

Pollination

Aesthetic value

Climatic regulation

Solution

Question 4

Stratification

Species composition

Standing crop

Trophic structure

Solution

Question 5

mutualiism between two species

active cooperation between two species

two different parasites on the same host

sharing of one more resources between the two species

Solution

Question 6

(i), (ii), (v) and (vii)

(ii), (iii), (v) and (vii)

(i), (iv) and (vi)

(iii), (v), (vi) and (vii)

Solution

Question 7

Species diversity increases as we move away from the equator towards the poles.

Stellar's sea cow and passenger pigeon got extinct due to over exploitation by man.

Lantana and Eichhornia are invasive weed species in India.

Among animals, insects are the most species-rich taxonomic group.

Solution

Question 8

Forest loss

Population explosion

Air pollution

Biodiversity losses.

Solution

Question 9

(i), (ii), (iii) and (iv)

(ii), (iii), (iv) and (vi)

(i), (ii), (iv) and (v)

(iii), (iv), (v) and (vi)

Solution

Question 10

A - $$S = CA^z$$; B - $$Log S = Log C + Z log A$$

A - $$Log S = Log C + Z log A$$; B - $$S = CA^z$$

A - $$Log C = Log S + Z log A$$; B - $$S = CA^z$$

A - $$S = CA^z$$; B - $$Log C = Log S + Z log A$$

Solution

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