Biodiversity and Conservation Test

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Biodiversity and Conservation Test - 45

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Weekly Quiz Competition

Question 1
1 / -0

Identify the correct description of rivet popper hypothesis.

A
Increase in the population of species damage the ecosystem

B
Loss of species damage the ecosystem

C
Population cannot grow above the carrying capacity of environment

D
None of the above

Solution

Ecologist Paul Ehrlich compared the rivets with species and aeroplane with the ecosystem. As the removal of rivets from the aeroplane can result in loss of safety and may lead to a crash. Similarly if species are removed out of the ecosystem that will result in damage of the ecosystem. Further, if the rivets that hold together the seats or the windows are removed the loss will be gradual and the damage will be less. However, if the rivets of the wings are removed the damage will be of greater intensity. Similarly, the loss of critical species from the ecosystem will result in a greater negative impact on the ecosystem than any other species.
So, the correct answer is 'Loss of species damage the ecosystem'
Question 2
1 / -0

The phrase "evil quartet" was coined by

A
G. Donnan

B
J. Daimond

C
P. Erlich

D
None of the above

Solution

Jared Diamond, a biologist coined the phrase 'evil quartet' to explain the four main human-induced causes of extinction which were habitat degradation, fragmentation, the introduction of exotic species and over-harvesting. Thus, the correct answer is option B.
Question 3
1 / -0

The number of taxa present within a particular area or an ecosystem is

A
$$\alpha$$- Diversity

B
$$\beta$$- Diversity

C
$$\gamma $$- Diversity

D
$$\delta$$- Diversity
Solution
- The mean species diversity in sites or habitats at a local scale is known as alpha diversity. R. H. Whittaker introduced the term alpha diversity.
- It can be calculated in both extinct and extant landscapes. It can be measured by counting the number of taxa in a particular ecosystem.
So, the correct answer is option A.
Question 4
1 / -0

Rivet popper hypothesis was given by

A
Paul Ehrlich

B
Tansley

C
E.P. Odum

D
None of the above

Solution

Rivet hypothesis was given by Paul Ehrlich. It states that loss of many species in an ecological unit decreases ecosystem functioning.
So, the correct answer is 'Paul Ehrlich'
Question 5
1 / -0

The species diversity decreases from lower to higher altitudes on a mountain. This is due to

A
Increase in temperature

B
Decrease in temperature

C
Greater seasonal variability

D
Both B and C

Solution

Biodiversity varies with a change in altitude or latitude. The diversity increases as we move from high to low altitudes (i.e., from poles to equator). In the temperate region, the climate is severe with the short growing period for plants while in tropical rain forests the conditions are favourable for growth throughout the year. This makes it possible for a large number of species to occur and grow. There is a decrease in species diversity from lower to higher altitudes on a mountain. Drop in temperature and greater seasonal variability at higher altitudes are a major factor that reduces diversity. So, the correct option is D.
Question 6
1 / -0

Which one of the following is an example of ex situ conservation?

A
Wild life sanctuary

B
Seed bank

C
Sacred groves

D
National park

Solution

Ex-situ conservation is the preservation of samples of biological origin outside their natural habitats. This involves conservation of genetic resources as well as wild and cultivated species. A seed bank stores seeds as a source for planting in case seed reserves elsewhere are destroyed. It is a type of gene bank. The seeds stored may be food crops or those of rare species to protect biodiversity. Whereas in-situ conservation is the conservation and maintenance of samples of living organisms in their natural habitat. Wild life sanctuary, sacred groves and national park are examples of in-situ conservation.
Thus, the correct answer is option B.
Question 7
1 / -0

All non-domesticated and non-cultivated biota in the natural environment are termed

A
Wildlife

B
Ordinary life

C
Domesticated life

D
Stray life

Solution

The term biota refers to a group of animals, plants or other organisms that share the same geographical region. All non domesticated and non cultivated biota in natural environment are called wild life. E.g. Lion, deer etc and plants like sunflower, thyme present in the natural environment.
So, the correct answer is 'Wildlife'
Question 8
1 / -0

Spot out the zone of our country considered as the hot spot of biodiversity and regarded as the 'Cradle of Speciation'.

A
Himalayan base

B
Deccan plateau

C
Western ghats

D
North East

Solution

The eastern himalayas are considered as cradle of speciation due to their rich plant diversity. They are extremely rich in endemic plant and species and are active centres of evolution and rich diversity of flowering plants.
Thus, the correct answer is option A.
Question 9
1 / -0

Match List-I with List-II and select the correct answer using the code given below the Lists:
List-I (Region) List-II (Characteristic vegetation)
A. Selvas 1. Tropophytes
B. Savanna 2. Mosses and lichens
C. Tundra 3. Epiphytes
D. Monsoon land 4. Grasses and trees

A
A-3, B-2, C-4, D-1

B
A-1, B-4, C-2, D-3

C
A-1, B-2, C-4, D-3

D
A-3, B-4, C-2, D-1

Solution

Selvas is a tropical rain forest. It has characteristic vegetation as tall broad-leaved evergreen trees, epiphytes and lianas. Savanna is a mixed-grass ecosystem. The characteristic vegetation in this area is grasses such as red oats grass, star grass, lemon grass, some shrubs. Apart from grasses, it also has tress like pine trees, palm trees, etc. Tundra is the coolest biome. It has characteristic vegetation mainly as grasses, shrubs, mosses and lichens. Monsoon land has characteristic vegetation as tropophytes. These plants act as a hygrophyte in one season and xerophytes in other season. They shed their leaves in the dry season.
Thus, the correct answer is 'A-3, B-4, C-2, D-1.'
Question 10
1 / -0

Read the statements and choose the correct option :
A : Sacred grooves are examples of in situ conservation
B : Biodiversity hotspots have low degree of endemism.
C : Biodiversity increases when number of organisms in a particular species increases.

A
Statement 'A' alone is correct.

B
Statements 'A' and 'B' are correct.

C
Statements 'A' and 'C' are correct.

D
Statement 'C' alone is correct.

Solution

Areas of forests where plant species are conserved for religious importance are called sacred groves. The locals believe that these areas are the residing places of Gods and are worshiped for generations. These areas have high biodiversity and are an example of in situ conservation. Thus the correct answer is option A.

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Re-Attempt Weekly Quiz Competition

	List-I (Region)		List-II (Characteristic vegetation)
A.	Selvas	1.	Tropophytes
B.	Savanna	2.	Mosses and lichens
C.	Tundra	3.	Epiphytes
D.	Monsoon land	4.	Grasses and trees

Biodiversity and Conservation Test - 45

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Biodiversity and Conservation Test - 45

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SHARING IS CARING

Question 1

Increase in the population of species damage the ecosystem

Loss of species damage the ecosystem

Population cannot grow above the carrying capacity of environment

None of the above

Solution

Question 2

G. Donnan

J. Daimond

P. Erlich

None of the above

Solution

Question 3

$$\alpha$$- Diversity

$$\beta$$- Diversity

$$\gamma $$- Diversity

$$\delta$$- Diversity

Solution

Question 4

Paul Ehrlich

Tansley

E.P. Odum

None of the above

Solution

Question 5

Increase in temperature

Decrease in temperature

Greater seasonal variability

Both B and C

Solution

Question 6

Wild life sanctuary

Seed bank

Sacred groves

National park

Solution

Question 7

Wildlife

Ordinary life

Domesticated life

Stray life

Solution

Question 8

Himalayan base

Deccan plateau

Western ghats

North East

Solution

Question 9

A-3, B-2, C-4, D-1

A-1, B-4, C-2, D-3

A-1, B-2, C-4, D-3

A-3, B-4, C-2, D-1

Solution

Question 10

Statement 'A' alone is correct.

Statements 'A' and 'B' are correct.

Statements 'A' and 'C' are correct.

Statement 'C' alone is correct.

Solution

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