Biodiversity and Conservation NCERT

Question 1 of 50

1. Question

1 point(s)

The following pie chart proportionate the number of species in various invertebrate taxa. A, B and C will represent :

The following pie chart proportionate the number of species in various invertebrate taxa. A, B and C will represent:
\(
\begin{array}{|l|l|l|l|}
\hline
& A & B & C \\
\hline
1. & \text{Insects} & \text{Echinoderms} & \text{Molluscs} \\
\hline
2. & \text{Insects} & \text{Molluscs} & \text{Crustaceans} \\
\hline
3. & \text{Crustaceans} & \text{Insects} & \text{Molluscs} \\
\hline
4. & \text{Molluscs} & \text{Crustaceans} & \text{Insects} \\
\hline
\end{array}
\)

1
2
3
4

Question 2 of 50

2. Question

1 point(s)

Match each item in Column I with one in Column II and choose the correct answer from the codes given below :
\(
\begin{array}{|l|l|l|l|}
\hline & \begin{array}{l}
\text { COLUMN } \\
\text { I }
\end{array} & & \text { COLUMN II } \\
\hline \text { A } & \begin{array}{l}
\text { Genetic } \\
\text { diversity }
\end{array} & \text { a. } & \begin{array}{l}
\text { Western ghats have greater amphibian } \\
\text { diversity than eastern ghats }
\end{array} \\
\hline \text { B. } & \begin{array}{l}
\text { Species } \\
\text { diversity }
\end{array} & \text { b. } & \begin{array}{l}
\text { India has more than } 50000 \text { genetically } \\
\text { different strains of rice }
\end{array} \\
\hline \text { C. } & \begin{array}{l}
\text { Ecological } \\
\text { diversity }
\end{array} & \text { c. } & \begin{array}{l}
\text { India has more ecosystems than } \\
\text { Norway }
\end{array} \\
\hline
\end{array}
\)
Codes:
\(
\begin{array}{|l|l|l|l|}
\hline & \text { A } & \text { B } & \text { C } \\
\hline 1 . & \text { a } & \text { b } & \text { c } \\
\hline 2 . & \text { b } & \text { a } & \text { c } \\
\hline 3 . & \text { c } & \text { b } & \text { a } \\
\hline 4 . & \text { b } & \text { c } & \text { a } \\
\hline
\end{array}
\)

1
2
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4

Question 3 of 50

3. Question

1 point(s)

Identify the incorrect statement :
\(
\begin{array}{|l|l|}
\hline \text { 1. } & \begin{array}{l}
\text { Biodiversity is the term popularised by the } \\
\text { sociobiologist Edward Wilson to describe the } \\
\text { combined diversity at all levels of biological } \\
\text { organisation. }
\end{array} \\
\hline \text { 2. } & \begin{array}{l}
\text { IUCN stands for International Union for Conservation } \\
\text { of Nature and Natural resources. }
\end{array} \\
\hline \text { 3. } & \begin{array}{l}
\text { Robert May places the global species diversity in the } \\
\text { range of } 20 \text { to } 50 \text { million. }
\end{array} \\
\hline \text { 4. } & \begin{array}{l}
\text { More than } 25 \text { percent of the drugs currently sold in } \\
\text { the market are derived from the plants. }
\end{array} \\
\hline
\end{array}
\)

1
2
3
4

Question 4 of 50

4. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Biologists make a statistical comparison of the temperate-tropical species richness of an exhaustively studied group of insects and extrapolate this richness to other group of animals and plants and come up with a gross estimate of the total number of species on earth.
Reason (R): Insects are the most successful living organisms among animals and plants.
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true but (R) does not explain (A).
(A) is true but (R) is false
(A) is false but (R) is true
Both (A) and (R) are true and (R) explains (A).

Question 5 of 50

5. Question

1 point(s)

Approximately, what number of species have been identified, named and studied ?

1.0 million
1.5 million
1.7 million
2.0 million

Question 6 of 50

6. Question

1 point(s)

The following pie chart proportionate the number of species in various vertebrate taxa. What will be true regarding the animals shown in the pie chart ?

\(
\begin{array}{|l|l|}
\hline \text { Statement I: } & \text { ‘A’ group will be of fishes. } \\
\hline \text { Statement II: } & \text { ‘B’ and ‘C’ are endotherms. } \\
\hline \text { Statement III: } & \text { ‘D’ are more successful on land than ‘E’. } \\
\hline
\end{array}
\)

Only Statement I and Statement II.
Only Statement I and Statement III.
Only Statement II and Statement III.
Statement I, Statement II and Statement III.

Question 7 of 50

7. Question

1 point(s)

Amongst the vertebrates, the Class with maximum number of species is :

Pisces
Reptilia
Aves
Mammalia

Question 8 of 50

8. Question

1 point(s)

Although, India has only \( 2.4 \% \) of world’s area, its share of global species diversity is about:

3%
5%
8%
11%

Question 9 of 50

9. Question

1 point(s)

What is the number of mega-diversity countries in the world ?

5
12
17
22

Question 10 of 50

10. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
\(
\begin{array}{|l|l|}
\hline \text { Assertion (A): } & \begin{array}{l}
\text { Biologists are not sure about how many } \\
\text { prokaryotic species there might be. }
\end{array} \\
\hline \text { Reason (R): } & \begin{array}{l}
\text { A large number of species have not been } \\
\text { data based so far. }
\end{array} \\
\hline
\end{array}
\)
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is the correct
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are false

Question 11 of 50

11. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
\(
\begin{array}{|l|l|}
\hline \text { Assertion (A): } & \begin{array}{l}
\text { There is a steady increase in species } \\
\text { richness from the arctic to the tropics. }
\end{array} \\
\hline \text { Reason (R): } & \begin{array}{l}
\text { Seasonal variation is substantially more } \\
\text { in tropics than in arctics. }
\end{array} \\
\hline
\end{array}
\)
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is true but (R) is false.
Both (A) and (R) are false.

Question 12 of 50

12. Question

1 point(s)

Regarding the gradients of biodiversity :
\(
\begin{array}{|l|l|}
\hline \text { I: } & \begin{array}{l}
\text { As we move from poles to the equator, broadly } \\
\text { speaking, biodiversity decreases. }
\end{array} \\
\hline \text { II: } & \begin{array}{l}
\text { There is an increase in species diversity from lower } \\
\text { to higher altitudes. }
\end{array} \\
\hline
\end{array}
\)

Only I is correct
Only II is correct
Both I and II are correct
Both I and II are incorrect

Question 13 of 50

13. Question

1 point(s)

The greatest biodiversity on the earth is found in :

African grasslands
Amazonian rain forest in South America
Western Ghats in India
Nile delta in Egypt

Question 14 of 50

14. Question

1 point(s)

Which of the following is not a reason that accounts for greater biodiversity of tropics ?

availability of more solar energy
more niche specialization
more time for species diversification
large seasonal variations in environmental factors

Question 15 of 50

15. Question

1 point(s)

The following pie chart proportionate the number of species in various plant taxa. What will be true regarding the organisms shown in the pie chart ?

Statement I: All members of A are heterotrophs.
Statement II: The primary reason for the success of B on land is the presence of the reproductive organ, flower.

Only Statement I.
Only Statement II
Both Statement I and Statement II.
Neither Statement I nor Statement II.

Question 16 of 50

16. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
\(
\begin{array}{|l|l|}
\hline \text { Assertion (A): } & \begin{array}{l}
\text { Species diversity contributes to the well- } \\
\text { being of an ecosystem. }
\end{array} \\
\hline \text { Reason (R): } & \begin{array}{l}
\text { Rich biodiversity contributes to higher } \\
\text { productivity of an ecosystem. }
\end{array} \\
\hline
\end{array}
\)
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is the correct 1. explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true but (R) is false.
Both (A) and (R) are false.

Question 17 of 50

17. Question

1 point(s)

The rivet popper hypothesis was given by:

Humboldt
Ehlrich
Tilman
Tansley

Question 18 of 50

18. Question

1 point(s)

The now extinct thylacine was a native of :

Mauritius
Africa
Australia
Russia

Question 19 of 50

19. Question

1 point(s)

Consider the two statements :
\(
\begin{array}{|l|l|}
\hline \text { I: } & \begin{array}{l}
\text { Species diversity seen in tropical areas is much lower } \\
\text { than that seen in temperate areas. }
\end{array} \\
\hline \text { II: } & \begin{array}{l}
\text { Temperate areas, unlike tropical areas are less } \\
\text { seasonal, more constant and promote niche } \\
\text { specialization. }
\end{array} \\
\hline
\end{array}
\)

Both I and II are correct and II explains I.
Both I and II are correct but II does not explain I.
I is correct but II is incorrect.
Both I and II are incorrect.

Question 20 of 50

20. Question

1 point(s)

How many of the given statements will be true regarding the graph showing species – area relationship ?

I. Within a region, species richness decreases with increasing explored area.
II. The rectangular hyperbola represents the relation between species richness and area for angiosperm plants, birds, bats and freshwater fishes, for example.
III. Z represents the regression coefficient or the slope of the line.
IV. The value of Z lies in the range of 0.1 to 0.2 regardless of the taxonomic group or the region.
V. For frugivorous birds and mammals in the tropical forests of different continents, the slope is found to be 1.15 .
VI. If the species area relationship is analysed for very large areas, the slope of the line is much steeper and Z value lies in the range of 0.6 to 1.2 .

3
4
5
6

Question 21 of 50

21. Question

1 point(s)

The name of Alexander von Humboldt is associated with the concept of:

Increased species diversity in stable communities
Parallelism between evolution and ecological succession
Resource-partitioning to avoid competition
Species-Area relationship

Question 22 of 50

22. Question

1 point(s)

On a logarithmic scale, the species-area relationship turns out to be a:

Straight line
Rectangular hyperbola
Bell shaped
U shaped

Question 23 of 50

23. Question

1 point(s)

All the following describe a stable biological community except :

It should always show a significant increase in productivity from year to year
It must be either resilient or resistant to occasional natural disturbances
It must be either resilient or resistant to occasional man-made disturbances
It must be resistant to invasion by alien species

Question 24 of 50

24. Question

1 point(s)

Identify the incorrectly matched pair :
\(
\begin{array}{|l|l|l|}
\hline \text { 1. } & \text { Dodo } & \text { Mauritius } \\
\hline \text { 2. } & \text { Quagga } & \text { Africa } \\
\hline \text { 3. } & \text { Thylacine } & \text { Australia } \\
\hline \text { 4. } & \text { Stellar’s sea cow } & \text { USA } \\
\hline
\end{array}
\)

1
2
3
4

Question 25 of 50

25. Question

1 point(s)

Which of the following species of tiger has not gone extinct ?

Bali
Javan
Caspian
Siberian

Question 26 of 50

26. Question

1 point(s)

Which group, amongst the following, has the maximum percentage of species facing threat of extinction ?

Amphibians
Birds
Mammals
Gymnosperms

Question 27 of 50

27. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
\(
\begin{array}{|l|l|}
\hline \text { Assertion (A): } & \begin{array}{l}
\text { The current mass extinction is different } \\
\text { from the previous episodes of mass } \\
\text { extinctions. }
\end{array} \\
\hline \text { Reason (R): } & \begin{array}{l}
\text { It is happening at a faster rate and is } \\
\text { mainly anthropogenic in nature. }
\end{array} \\
\hline
\end{array}
\)
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true but (R) is false.
Both (A) and (R) are false.

Question 28 of 50

28. Question

1 point(s)

Loss of biodiversity may lead to all except :

decline in plant production
increased resistance to environmental perturbance
increased variability in water use
increased variability in pest and disease cycle

Question 29 of 50

29. Question

1 point(s)

At present, the most important cause driving animals and plants to extinction is :

Co-extinctions
Alien species invasions
Over-exploitation
Habitat loss and fragmentation

Question 30 of 50

30. Question

1 point(s)

Consider the given two statements :
\(
\begin{array}{|l|l|}
\hline \text { I: } & \begin{array}{l}
\text { Fragmentation of habitat is an important cause of } \\
\text { extinction of species. }
\end{array} \\
\hline \text { II: } & \begin{array}{l}
\text { Minor fluctuations in climate, resources or other } \\
\text { factors can be catastrophic in small, isolated } \\
\text { populations. }
\end{array} \\
\hline
\end{array}
\)

Both I and II are correct and II explains I
Both I and II are correct but II does not explain I.
I is correct but II is incorrect
I is incorrect but II is correct

Question 31 of 50

31. Question

1 point(s)

Extinction of Steller’s sea cow and passenger pigeon was due to :

Habitat loss and fragmentation
Over exploitation
Invasion of alien species
Co-extinctions

Question 32 of 50

32. Question

1 point(s)

Lantana camara and Clarias gariepinus are examples of :

Invasive species
Apex predators
Critical link species
Edge species

Question 33 of 50

33. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
\(
\begin{array}{|l|l|}
\hline \text { Assertion (A): } & \begin{array}{l}
\text { Non-native introduced species always } \\
\text { have a negative impact on the ecosystem } \\
\text { in which they have been introduced. }
\end{array} \\
\hline \text { Reason (R): } & \begin{array}{l}
\text { Non-native species always become } \\
\text { invasive in the introduced ecosystem. }
\end{array} \\
\hline
\end{array}
\)
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is true but (R) is false.
Both (A) and (R) are false

Question 34 of 50

34. Question

1 point(s)

Identify the correctly matched pairs :
\(
\begin{array}{|l|l|l|}
\hline
\text{I} & \text{Narrowly utilitarian argument for conserving biodiversity} &
\begin{array}{l}
\text{Humans derive countless} \\
\text{direct benefits from nature.}
\end{array} \\
\hline
\text{II} & \text{Broadly utilitarian argument for conserving biodiversity} &
\begin{array}{l}
\text{Biodiversity plays a major role in} \\
\text{many ecosystem services that} \\
\text{nature provides.}
\end{array} \\
\hline
\text{III} & \text{Ethical argument for conserving biodiversity} &
\begin{array}{l}
\text{We owe to millions of plant, animal} \\
\text{and microbe species with whom} \\
\text{we share this planet.}
\end{array} \\
\hline
\end{array}
\)

Only I
Only II and III
I, II and III
None

Question 35 of 50

35. Question

1 point(s)

The search for previously unknown compounds in organisms that have never been used in traditional medicine is known as :

Biopiracy
Bioprospecting
Molecular pharming
Bioremediation

Question 36 of 50

36. Question

1 point(s)

Biodiversity should be conserved as it plays a major role in many ecosystem services that nature provides. Such an argument is called :

broadly utilitarian
narrowly utilitarian
ethical
moral

Question 37 of 50

37. Question

1 point(s)

What percentage of total oxygen in the earth’s atmosphere is produced by Amazon rainforest through photosynthesis ?

50
40
30
20

Question 38 of 50

38. Question

1 point(s)

Identify the correct fact regarding the biodiversity hot spots in the world :

The current total number is 25 and 3 of these cover India
The current total number is 25 and 2 of these cover India
The current total number is 34 and 3 of these cover India
The current total number is 34 and 2 of these cover India

Question 39 of 50

39. Question

1 point(s)

Consider the following statements regarding hotspots of biodiversity :
\(
\begin{array}{|l|l|}
\hline \text { I. } & \begin{array}{l}
\text { They are characterized by high endemism and high } \\
\text { threat of extinction. }
\end{array} \\
\hline \text { II. } & \text { Three of the } 34 \text { hotspots in the world cover India. } \\
\hline \text { III. } & \begin{array}{l}
\text { All biodiversity hotspots cover about } 10 \% \text { of the } \\
\text { world area. }
\end{array} \\
\hline
\end{array}
\)

Only I and II are correct
Only I and III are correct
Only II and III are correct
I, II and III are correct.

Question 40 of 50

40. Question

1 point(s)

The biodiversity hotspots in India include all the following except :

Western Ghats and Sri Lanka
Indo-Burma
Himalayas
Deccan plateau

Question 41 of 50

41. Question

1 point(s)

Sacred groves, found in Khasi and Jaintia Hills, are located in the Indian state of:

Arunachal Pradesh
Chhattisgarh
Meghalaya
West Bengal

Question 42 of 50

42. Question

1 point(s)

When a threatened plant needs urgent measures to save it from extinction, the desirable approach is :

in-situ conservation
ex-situ conservation
cryopreservation
bio preservation

Question 43 of 50

43. Question

1 point(s)

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
\(
\begin{array}{|l|l|}
\hline \text { Assertion (A): } & \begin{array}{l}
\text { Conserving the biological diversity of } \\
\text { the ecological hotspots is very important } \\
\text { component of efforts to safeguard the } \\
\text { world’s biological heritage. }
\end{array} \\
\hline \text { Reason (R): } & \begin{array}{l}
\text { The hotspots of biodiversity cover a } \\
\text { large percentage of the land area of earth. }
\end{array} \\
\hline
\end{array}
\)
In the light of the above statements, choose the most appropriate answer from the options given below :

Both (A) and (R) are true and (R) is the correct explanation of (A)
Both (A) and (R) are true but (R) is not the correct explanation of (A)
(A) is true but (R) is false
Both (A) and (R) are false

Question 44 of 50

44. Question

1 point(s)

What percent of earth’s area is covered by hotspots of biodiversity ?

less than 2
about 7
about 11
more than 16

Question 45 of 50

45. Question

1 point(s)

According to your NCERT text, the number of biosphere reserves, national parks and wildlife sanctuary in India are respectively:

14, 90 and 448
11, 98 and 440
15, 101 and 403
13,92 and 427

Question 46 of 50

46. Question

1 point(s)

Which of the following is not an ex-situ method for conservation of biodiversity ?

Seed banks
Zoological parks
Sacred groves
Cryopreservation of gametes

Question 47 of 50

47. Question

1 point(s)

The historic convention on Biological Diversity held in Rio de Janeiro in 1992 is known as :

CITES Convention
The Earth Summit
G-16 Summit
MAB Programme

Question 48 of 50

48. Question

1 point(s)

The World Summit on Sustainable Development was held in :

1992 in Rio de Janeiro
1971 in Ramsar
2002 in Johannesburg
1987 in Montreal

Question 49 of 50

49. Question

1 point(s)

Earth Summit 2012 was held in :

Rio
Johannesburg
Paris
Geneva

Question 50 of 50

50. Question

1 point(s)

Which one of the following is not a major characteristic feature of biodiversity hotspots ?

A large number of species
Abundance of endemic species
Mostly located in the tropics
Mostly located in the polar regions

NEET BIOLOGY TEST SERIES

Biodiversity and Conservation NCERT

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