Tag: evs

Questions Related to evs

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'.

Which of the following will not affect the frequency of the gene in a large population?

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

  1. A) Environmental selective pressure

  2. B) selective immigration

  3. C) Random mating

  4. D) Non random mating

Show answer
Correct Option: A
Explanation:
  • Selective pressures drive natural selection.
  •  Some members of the population will not survive and reproduce and, thus, will not pass on their genes into the next generation. This change in the genetic makeup of a population is called evolution. 
  • Hence, Environmental selective pressure will not affect the frequency of the gene in a large population. 
  • So, the correct answer is 'Environmental selective pressure'.

Which one of the following pairs of geographical areas show maximum biodiversity in our country?

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

  1. Sunderbans and Rann of Kutch

  2. Eastern Ghats and West Bengal

  3. Eastern Himalayas and Western Ghats

  4. Kerala and Punjab

Show answer
Correct Option: C
Explanation:
Biodiversity mainly depends on upon the climatic and geographical conditions available in a particular region. The Western Ghat runs along the western edge of peninsular India. It supports a diverse range of flora and fauna. There are over 6000 vascular plants belonging to over 2500 genera in this hotspot, of which over 3000 are endemic. It is a rich source of spices such as black pepper and cardamom. The highest concentration of species in the Western Ghats is believed to be the Agasthyamalai Hills in the extreme south. The region also harbors over 450 bird species, about 140 mammalian species, 260 reptiles, and 175 amphibians. Over 60% of the reptiles and amphibians are completely endemic to the hotspot. 
The Eastern Himalayas is the region encompassing Bhutan, northeastern India, and southern, central, and eastern Nepal. The region is geologically young and shows high altitudinal variation. The Eastern Himalayan hotspot has nearly 163 globally threatened species including the one-horned rhinoceros (Rhinoceros unicornis), the wild Asian water buffalo and in all 45 mammals, 50 birds, 17 reptiles, 12 amphibians, 3 invertebrate and 36 plant species. 
So, the correct answer is 'Eastern Himalayas and Western Ghats'

The biodiversity is positively associated with

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

  1. Diversity of ecosystems

  2. Genetic variation within species

  3. Species diversity within communities

  4. B and C only

  5. All of the above

Show answer
Correct Option: E
Explanation:

Biodiversity represents the sum of the total of various life forms such as unicellular fungi, bacteria, protozoa and multicellular organisms such as plants, fishes and mammals at various biological levels including gene, habitats and ecosystem. Thus, the correct option is E.

Species biodiversity is a combination of which two factors? 

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

  1. The number of different species and the number of ecosystems in which they are found

  2. The number of different species and the number of each of those different species in an area

  3. The number of different genes in an organism and the number of ecosystems in which a species is found

  4. The number of different species and the number of times a particular gene is found in the species

  5. The number of different genes in an organism and the number of each species found in an ecosystem.

Show answer
Correct Option: A
Explanation:

Species diversity refers to the variety of species within a region. Measures of species diversity are the number of species in particular area. Greater the species richness, greater is the species diversity. The number of niches, trophic levels and various ecological process that sustain energy flow, food webs and recycling of nutrients is ecological diversity. Thus, the correct answer is A.

'Vavilov mega diversity centre' is in

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

  1. Australia

  2. Siberia

  3. Andamans

  4. Tibet

Show answer
Correct Option: A
Explanation:

Vavilov mega diversity center is in Australia. It was indicated by Dr. Nikolai Ivanovich Vavilov. He stated that "plants were not domesticated somewhere in the world at random but there are regions where the domestication started". The center of origin is also considered the center of diversity.

Until today Vavilov centers are regions where a high diversity of crop wild relatives can be found, representing the natural relatives of domesticated crop plants.