Biodiversity and Conservation Test

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Biodiversity and Conservation Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements are correct?
(i) Hydra has a number of cilia around its mouth.
(ii) Frog uses its long, sticky tongue to catch insects
(iii) Mosquito sucks up the blood of animals with its tentacle.

A
(i) and (iii) only

B
(i) only

C
(ii) only

D
(ii) and (iii) only

Solution

(i)Hydra has a number of tentacles around its mouth, that entangle small aquatic animals and kill them with their nematocytes or stinging cells.
(ii) Frog uses it long and sticky tongue to catch insects.
(iii) Mosquito sucks blood through feeding tube.
Question 2
1 / -0

'Water hyacinth' which is a free floating weed and infests India's waterways choking off plants, fish and animal growth is a native of

A
Australia

B
France

C
South America

D
North America

Solution

Eichhornia crassipes, also called the water hyacinth, is a native of Amazon basin in South America. It is a fast growing weed due to its vegetative propagation through the stem called runners. It spreads quickly and plays a havoc for the water bodies. Due to this, it caused fish scarcity in Bengal resulting in severe economic and food losses. It was termed as Terror of Bengal for this reason.
Question 3
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Extinction is caused by ............

A
Deforestation

B
Over-exploitation of animals

C
The destruction of aquatic habitats by pollution

D
All of the above

Solution

Extinction means a group of species, family or larger group that have no living member. The extinction can be caused due to various factors such as deforestation (cutting down of trees), Over exploitation of organisms for human good, or by the destruction of the natural habitat or organism.
So, the correct answer is 'All of the above'.
Question 4
1 / -0

The species diversity of plants on earth is not more than ______ of the total.

A
2.4%

B
22%

C
8.1%

D
8.5%

Solution

According to this chart plant species is less than 22%.
So, the correct answer is '22%'.
Question 5
1 / -0

Black buck, golden langur and Asiatic wild ass are likely to be in danger of extinction. This species belongs to

A
Extinct

B
Endangered

C
Vulnerable

D
Rare

Solution

Blackbuck, Golden langur, and Asiatic wild ass are likely to be in danger of extinction and are classified as endangered (as their population is decreasing) by IUCN red data list.
So, the correct answer is 'Endangered'.
Question 6
1 / -0

Taxonomical aids are helping hands of taxonomy, and two of them functions for ex-situ conservation strategy, these are?

A
Botanical garden and herbarium

B
Zoological parks and museums

C
Zoological parks and botanical gardens

D
Museums and botanical gardens
Solution
Zoological parks and Botanical gardens are places where endangered animals and plants can be conserved, outside their natural habitat.
Zoological park is a place where wild animals are kept under human observation in the natural environment. The main purpose of setting zoological parks is to maintain ecological balance in the environment and conserve wildlife.
A botanical garden is defined as that place, where different varieties of plants are cultivated. Botanical gardens are established for scientific study.
So, the correct answer is option C.
Question 7
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An example of ex-situ conservation is by

A
Seed bank

B
Community protected small or large forests

C
National parks

D
Wildlife Sanctuary

Solution

Ex-situ conservation is that in which the components of biodiversity is preserved outside their natural habitat. It involves the process in which the genetic make-up of the species is conserved. The seed bank is an example of ex-situ conservation functional under Gene Bank.
So, the correct answer is 'Seed bank'.
Question 8
1 / -0

There are four ecological blocks are given to determine species diversity. Which of the ecological blocks showing the same degree of species richness?

A
A, B

B
A, B, C

C
A, B, C & D

D
A, B & D

Solution

Species richness gives an idea of the number of different species present in an ecological landscape or area. It basically gives us an idea of the variety present. This parameter does not take into consideration the abundance of a species or the relative abundance of two or more species. Hence, ecological landscapes with the same number of species are said to have the same species richness.
So, the correct answer is 'A, B, C'.
Question 9
1 / -0

Alexander Von Humboldt described ..................... for the first time.

A
Ecological biodiversity

B
Laws of limiting factor

C
Species-area relationship

D
Population growth equation

Solution

Alexander Von Humboldt observed the species-area relationship. He observed that when the area explored increases, the species richness increases but to a certain limit. That is represented by the rectangular hyperbola which represents the equation $$S$$ = $$CA^Z$$ where S is the species richness, A is the area, C is a constant and Z is the regression constant. The straight line represents the logarithmic form of the same equation which is log S = log C + Z log A.
Thus, the correct answer is option C.
Question 10
1 / -0

All of the following are included in 'Ex-situ conservation' except.

A
Wildlife safari parks

B
Sacred groves

C
Botanical gardens

D
Seed banks

Solution

Ex-situ conservation is the conservation and maintenance of samples of living organisms outside their natural habitat, in the form of whole plants, seed, pollen, vegetative propagules, tissue or cell cultures. These ex situ collections of living organisms (living collections, seed banks, pollen, vegetative propagules, tissue or cell cultures) need to be managed according to strict scientific and horticultural standards to maximize their value for conservation purposes. Thus they need to be correctly identified, documented and managed and an efficient information management system put in place. Integrated conservation management can also ensure that ex situ collections can support in situ conservation, through habitat restoration and species recovery.
So the correct option is 'Wildlife safari parks'.

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Biodiversity and Conservation Test - 67

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Biodiversity and Conservation Test - 67

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SHARING IS CARING

Question 1

(i) and (iii) only

(i) only

(ii) only

(ii) and (iii) only

Solution

Question 2

Australia

France

South America

North America

Solution

Question 3

Deforestation

Over-exploitation of animals

The destruction of aquatic habitats by pollution

All of the above

Solution

Question 4

2.4%

22%

8.1%

8.5%

Solution

Question 5

Extinct

Endangered

Vulnerable

Rare

Solution

Question 6

Botanical garden and herbarium

Zoological parks and museums

Zoological parks and botanical gardens

Museums and botanical gardens

Solution

Question 7

Seed bank

Community protected small or large forests

National parks

Wildlife Sanctuary

Solution

Question 8

A, B

A, B, C

A, B, C & D

A, B & D

Solution

Question 9

Ecological biodiversity

Laws of limiting factor

Species-area relationship

Population growth equation

Solution

Question 10

Wildlife safari parks

Sacred groves

Botanical gardens

Seed banks

Solution

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