Tag: animal- the base of our life

Questions Related to animal- the base of our life

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.

Select the correct statement about biodiversity

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

  1. large scale planting of Bt cotton has no adverse effect on biodiversity

  2. conservation of biodiversity is a fad pursued by developed countries

  3. desert areas of Rajasthan and Gujarat have a very high level of desert animal species as well as numerous rate animals

  4. Western Ghats have a very high degree of species richness and endemism

Show answer
Correct Option: D
Explanation:
Hotspot of biodiversity are the areas which have a high density of biodiversity or megadiversity which are the most threatened points. All over the world, 25 terrestrial hotspots have been identified for the conservation of biodiversity. Out of these 15 hotspots have the tropical forest, 5 acres and Mediterranean time zones and 9 hotspots are present in tropics. Out of 25 hotspots of the world tour found in India. These are the Western Ghats and the eastern Himalayas.
So, the correct option is 'The Western Ghats have a very high degree of species richness and endemism'

Biodiversity means variations present in the species of the flora of 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. True

  2. False

  3. Nither

  4. Either

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Correct Option: B