Tag: animal- the base of our life

Questions Related to animal- the base of our life

Assertion : Diversity observed in the entire geographical area is called as gamma diversity.

Reason : Biodiversity decreases from high altitude to low altitude.

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. Both the Assertion and the Reason are true and the Reason is a correct explanation of the Assertion.

  2. Both the Assertion and the Reason are true but the Reason is not a correct explanation of the Assertion.

  3. The Assertion is true but the Reason is false

  4. Both the Assertion and Reason are false.

  5. The Assertion is false but Reason is true.

Show answer
Correct Option: C
Explanation:

Community and ecosystem diversity is of three types- alpha, beta and gamma. 

Alpha diversity is the species diversity in a given community or habitat, alpha diversity is dependent upon species richness and evenness or equitability. 
Beta diversity is biodiversity, which appears in a range of communities due to the replacement of species with the change in community or habitat due to the presence of different micro-habitats, niches and difference in environment conditions. 
Gamma diversity is diversity present in ranges of communities as represented by the diversity of habitats or ecosystems over a total landscape or geographical area. 
Biodiversity is not uniform on the Earth. It varies with the change in latitude or altitude. 
Biodiversity increase, when we move from high to low latitude (i.e., from the poles to the equator)
Thus, the correct answer is option C.

Reason for diversity in living beings is due to __________________.

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. Short term evolutionary changes

  2. Long term evolutionary changes

  3. Mutations

  4. Gradual change

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Correct Option: B

Convention on Biodiversity came into force on

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. 29 Dec, 1993

  2. 6 June, 1992

  3. 3 October, 1994

  4. 4 October, 1993

Show answer
Correct Option: A
Explanation:

The Earth Summit of Rio de Janeiro, also known as the United Nations Conference on Environment and Development (UNCED), was held in Rio de Janeiro from 3 to 14 June 1992. It resulted into the Convention on Biodiversity, a multilateral treaty, which entered into force on December 29, 1993. Three major goals were addressed in this convention which included: conservation of biodiversity; sustainable use of its components; and the fair and equitable sharing of benefits arising from the genetic resources. 

So, the correct answer is '29 Dec, 1993'.

Diversity of habitats over the total geographical area is

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. Alpha diversity

  2. Beta diversity

  3. Gamma diversity

  4. Delta diversity

  5. Omega diversity

Show answer
Correct Option: C
Explanation:

A) The diversity of organisms sharing the same habitat is known as alpha diversity.

B) The rate of replacement of species along a gradient of habitats is known as beta diversity. 
C) The diversity of habitats over the total landscape or geographical area is known as gamma diversity.
D) Delta diversity includes the differentiation of diversity over wide geographic areas.
So, the correct answer is 'Gamma diversity'.

Percentage of angiosperms of all the threatened species is

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. 51%

  2. 42%

  3. 28%

  4. 18%

Show answer
Correct Option: A
Explanation:

IUCN is the authority on threatened species, and it treats threatened species as a group of three categories, depending on the degree relative to which they are threatened. Those categories are Vulnerable species; Endangered species and Critically endangered species. As per the Red list of 2000, there are 11,096 threatened species. The percentage of angiosperms of all the threatened species is 51%.

So, the correct answer is '51%'.

Maximum biodiversity is found in

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. Tropical rain forests

  2. Temperate rain forests

  3. Mangrove vegetation

  4. Tundra

Show answer
Correct Option: A
Explanation:
Maximum biodiversity is found in Tropical rain forests. One of the reasons is that tropical environments, unlike temperate ones, are less seasonal, relatively more constant and predictable. Such constant environments promote niche specialization and lead to greater species diversity. Examples:-
A) A forest in a tropical region like Equador has up to 10 times as many species of vascular plants as a forest of equal area in a temperate region like the Midwest of the USA. 
B) The largely tropical Amazonian rain forest in South America has the greatest biodiversity on earth- it is home to more than 40,000 species of plants, 3,000 of fishes, 1,300 of birds, 427 of mammals, 427 of amphibians, 378 of reptiles and of more than 1,25,000 invertebrates.
So, the correct answer is 'Tropical rain forests'.

Given below are a few statements related to biodiversity. Pick those that correctly describe the concept of biodiversity.
(i) Biodiversity refers to the different species of flora and fauna present in an area.
(ii) Biodiversity refers to only the flora of a given area.
(iii) Biodiversity is greater in a forest.
(iv) Biodiversity refers to the total number of individuals of a particular species living in an area.

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. (i) and (ii)

  2. (ii) and (iv)

  3. (i) and (iii)

  4. (ii) and (iii)

Show answer
Correct Option: C
Explanation:

Biodiversity refers to the different species of flora and fauna present in an area. The forest has a wide variety of flora and fauna which flourishes widely in the given area and are a rich source of biodiversity. Biodiversity is not concerned with a particular species .

So, the correct answer is option C.

With reference to the Aichi Biodiversity Targets, consider the following statements.
$1$. It aims to bring pollution, including from excess nutrients to levels that are not detrimental to ecosystem function and biodiversity.
$2$. It aims to control or eradicate invasive alien species on priority basis.
Which of the statement(s) given is/are correct?

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. $1$ only

  2. $2$ only

  3. Both $1$ and $2$

  4. Neither $1$ nor $2$

Show answer
Correct Option: C
Explanation:
Aichi Biodiversity Targets have the following ideologies:-
  1. Strategic Goal A: Address the underlying causes of biodiversity loss by mainstreaming biodiversity across government and society.
  2. Strategic Goal B: Reduce the direct pressures on biodiversity and promote sustainable use.
  3. Strategic Goal C: To improve the status of biodiversity by safeguarding ecosystems, species, and genetic diversity.
  4. Strategic Goal D: Enhance the benefits to all from biodiversity and ecosystem services.
  5. Strategic Goal E: Enhance implementation through participatory planning, knowledge management, and capacity building.

Strategic Goal B aims to bring pollution, including from excess nutrients to levels that are not detrimental to ecosystem function and biodiversity and it aims to control or eradicate invasive alien species on a priority basis.

So the correct option is 'Both $1$ and $2$'.

Biodiversity of a geographical region represents

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. endangered species found in the region

  2. the diversity in the organisms living in the region

  3. genetic diversity in the dominant species of the region

  4. All of these

Show answer
Correct Option: B
Explanation:

Biodiversity of a geographical region represents the diversity in the organisms living in the region. 

So, the correct option is 'Option B'.

Biodiversity of a geographic region represents

evs animal- the base of our life diversity in the living world environmental conservation and biodiversity biodiversity on earth and in india

  1. Genetic diversity present in the dominant species of the region

  2. Species evdemism to the region

  3. Endangered species found in the region

  4. Diversity in organisms living in the region

Show answer
Correct Option: D
Explanation:

Biodiversity refers to the variety and variability among living organism and the ecological complexes in which they occur. Biodiversity of a particular region replaces the diversity in organism living in that region all the flora fauna different species that are present in that particular region.

So, the correct option is 'Diversity in organisms living in the region'.