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NEET • BIOLOGY • BIODIVERSITY AND CONSERVATION
Biodiversity and conservation practice · Hard
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Practice format and chapter quiz
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1
Hard
1 of 21
Remembering
+4 | -1
Farmers have reported over 50% higher yields of rice by using which of the following biofertilizers?
View answer and explanation
Correct option: D
Azolla pinnata
Option D (Azolla pinnata) is correct because Azolla pinnata, when used as a biofertilizer in rice fields, can significantly increase rice yields due to its nitrogen-fixing capabilities.
2
Hard
2 of 21
Remembering
+4 | -1
In cryopreservation, germplasm is maintained at
View answer and explanation
Correct option: D
None of these
The correct answer is None of these because cryopreservation typically uses liquid nitrogen at -196°C, which is much colder than -196°F.
3
Hard
3 of 21
Remembering
+4 | -1
How many Indian plant species are used to extract essential oils and scents?
View answer and explanation
Correct option: B
500
Option B (500) is correct because approximately 500 Indian plant species are used for extracting essential oils and scents.
4
Hard
4 of 21
Understanding
+4 | -1
Which of the following is correctly matched?
View answer and explanation
Correct option: C
Parthenium hysterophorus- threat to biodiversity
Option C (Parthenium hysterophorus- threat to biodiversity) is correctly matched because Parthenium is an invasive species that negatively impacts biodiversity.
5
Hard
5 of 21
Remembering
+4 | -1
Which one of the following is used in Rauwolfia serpentine?
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Correct option: A
curing high blood pressure
Option A (curing high blood pressure) is correct because Rauwolfia serpentina is traditionally used for treating hypertension.
6
Hard
6 of 21
Understanding
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Assertion: Broadly utilitarian arguments say
that we should conserve biodiversity because
biodiversity plays a major role in many
ecosystem services that nature provides.
Reason: Exploration of molecular, genetic and
species level diversity to obtain the products
of economic importance is included under
broadly utilitarian category.
that we should conserve biodiversity because
biodiversity plays a major role in many
ecosystem services that nature provides.
Reason: Exploration of molecular, genetic and
species level diversity to obtain the products
of economic importance is included under
broadly utilitarian category.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because the assertion accurately describes broadly utilitarian arguments, but the reason describes narrowly utilitarian arguments.
7
Hard
7 of 21
Remembering
+4 | -1
How many mangroves species are founds in marine bio diversity of India?
View answer and explanation
Correct option: A
45
Option A (45) is correct because approximately 45 mangrove species are found in the marine biodiversity of India.
8
Hard
8 of 21
Remembering
+4 | -1
Since the origin and diversification of life on earth, how many episodes of mass extinction of species have occurred till date?
View answer and explanation
Correct option: D
5
Option D (5) is correct because there have been five major mass extinction events in Earth's history since the origin and diversification of life.
9
Hard
9 of 21
Remembering
+4 | -1
Jim Corbett National Park protects
View answer and explanation
Correct option: B
Tiger
Option B (Tiger) is correct because Jim Corbett National Park is primarily known for protecting tigers.
10
Hard
10 of 21
Remembering
+4 | -1
The animals which are in danger of extinction of which is also possible are known as
View answer and explanation
Correct option: C
Endangered
Option C (Endangered) is correct because endangered species are at risk of extinction.
11
Hard
11 of 21
Application
+4 | -1
If log A = 4, Z = 0.3 and logC = 0.8, what is log
S?
S?
View answer and explanation
Correct option: D
2
Option D (2) is correct because it is the result of substituting the given values into the species-area relationship equation and solving for log S.
12
Hard
12 of 21
Understanding
+4 | -1
Which of the following is a correct representation of the species diversity of birds in the regions mentioned?
View answer and explanation
Correct option: B
Columbia > New York > Green land
Option B (Columbia > New York > Green land) is correct because bird species diversity is highest near the equator (Columbia), moderate in temperate regions (New York), and lowest in polar regions (Greenland).
13
Hard
13 of 21
Understanding
+4 | -1
Read the following statements.
I) Gamma diversity is the diversity of the entire landscape.
II) species diversity increases as we move away from the equator towards the poles.
III) Genetic diversity decreases with environmental variability.
IV) Western Ghats have a greater amphibian species diversity than the Eastern Ghats.
Which among the above are true?
I) Gamma diversity is the diversity of the entire landscape.
II) species diversity increases as we move away from the equator towards the poles.
III) Genetic diversity decreases with environmental variability.
IV) Western Ghats have a greater amphibian species diversity than the Eastern Ghats.
Which among the above are true?
View answer and explanation
Correct option: A
I & IV
Option A (I & IV) is correct because gamma diversity refers to the diversity of the entire landscape, and the Western Ghats have a greater amphibian species diversity than the Eastern Ghats.
14
Hard
14 of 21
Understanding
+4 | -1
Assertion: If the species-area relationships are
analyzed among very large areas like the entire
continents, the value of Z i.e., slope of line lies
in the range of 0.1 to 0.2.
Reason: The value of Z i.e., slope of line of
species area relationships lies in the range of 0.6
to 1.2 when analysis is done among small areas.
analyzed among very large areas like the entire
continents, the value of Z i.e., slope of line lies
in the range of 0.1 to 0.2.
Reason: The value of Z i.e., slope of line of
species area relationships lies in the range of 0.6
to 1.2 when analysis is done among small areas.
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D (If both Assertion and Reason are false) is the correct answer because the Z value ranges are incorrect for both large and small areas.
15
Hard
15 of 21
Remembering
+4 | -1
The largest brackish water lagoon in Asia is:
View answer and explanation
Correct option: B
Chilka lake
Option B (Chilka lake) is correct because Chilka Lake in Odisha is the largest brackish water lagoon in Asia.
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16
Hard
16 of 21
Understanding
+4 | -1
The most important cause driving animals and plants to extinction is
View answer and explanation
Correct option: B
Habitat loss and fragmentation
Option B (Habitat loss and fragmentation) is correct because it is the primary driver of species extinction globally.
17
Hard
17 of 21
Remembering
+4 | -1
The crustacean parasite, which changes the sex of the host crab, from male to female (castration) is:
View answer and explanation
Correct option: D
Sacculina
Option D (Sacculina) is correct because Sacculina is a crustacean parasite known to cause parasitic castration and sex alteration in host crabs.
18
Hard
18 of 21
Understanding
+4 | -1
An ecotype is a type of species in which environmentally induced variation are
View answer and explanation
Correct option: B
Genetically fixed
Option B (Genetically fixed) is correct because an ecotype is a distinct form of a species that is adapted to a specific environmental condition, and this adaptation is genetically determined.
19
Hard
19 of 21
Understanding
+4 | -1
In the tropics, which of the following contributes the least to species diversity?
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Correct option: D
Spatial homogeneity
Option D (Spatial homogeneity) is correct because in the tropics, high predictability, predation, and high productivity contribute to species diversity, while spatial homogeneity tends to reduce it.
20
Hard
20 of 21
Understanding
+4 | -1
S-I: Coral reef is a biodiversity rich ecosystem.
S-II: Coral reefs are formed in tropical waters of the oceans.
S-II: Coral reefs are formed in tropical waters of the oceans.
View answer and explanation
Correct option: A
Both S-I & S-II are correct
Option A (Both S-I & S-II are correct) is correct because coral reefs are indeed biodiversity-rich ecosystems found in tropical waters.
21
Hard
21 of 21
Remembering
+4 | -1
Which rock species of Western Ghat is extinct due to quarrying?
View answer and explanation
Correct option: B
Bamboo and Boswelia
Option A (Tectona and Terminalia) is correct because certain species of Tectona (Teak) and Terminalia are threatened due to quarrying in the Western Ghats.
Revision notes and key takeaways
Review BIODIVERSITY AND CONSERVATION in your textbook or class notes, then use this set to check your understanding.
Key Takeaways
- ✓ This set contains 21 single-correct-answer MCQs on BIODIVERSITY AND CONSERVATION.
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