Tag: basis of the classification of animals

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Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Genomic DNA library is

  1. Packing of donor DNA in a collection of vectors.

  2. A collection of gene vectors.

  3. Collection of organisms for extracting DNA.

  4. A collection of literature about DNA.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A genomic library is a collection of total genomic DNA from a single organism. This DNA is packed in a population of identical vectors for storage. Each vector contains a different insert of DNA. 


So, the correct option is 'Packing of donor DNA in a collection of vectors.'

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Gene library consists of

  1. All fragments of a genome

  2. Frozen germplasm

  3. Tissue culture

  4. Living bacteria having clones of genes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A gene library can be defined as a collection of living bacteria colonies that have been transformed with different pieces of DNA from the organism. These DNA fragments are the sources of the genes of interest. 

So, the correct option is 'Living bacteria having clones of genes'.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Genetic erosion is

  1. Deforestation

  2. Shifting cultivation

  3. Adopting genetically uniform varieties

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Genetic erosion is a process, whereby an already limited gene pool of an endangered species of plant or animal diminishes even more when individuals from the surviving population die off without getting a chance to meet and breed with others in their endangered low population. The term is sometimes used in a narrow sense, such as when describing the loss of particular alleles or genes, as well as being used more broadly, as when referring to the loss of varieties or even whole species.
Genetic erosion occurs because each individual organism has many unique genes which get lost when it dies without getting a chance to breed. Low genetic diversity in a population of wild animals and plants leads to a further diminishing gene pool inbreeding and a weakening immune system can then "fast track" that species towards eventual extinction.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Vavilov collected............. varieties of Wheat

  1. 26,000

  2. 2,600

  3. 4,600

  4. 260
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vavilov collected not less than 26,000 varieties of wheat alone, were kept in cultivation at Leningrad. These collections formed the basis for new theories on the origin of cultivated plants and laid the foundation for the future improvement of crop plants and of one of the largest and oldest seed banks in the world today.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Which one will be best for germplasm collection?

  1. Britain

  2. France

  3. Portugal

  4. Peru
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Germplasm is a term used to describe living genetic resources such as seeds or tissue, maintained for the purpose of breeding, preservation, and other research uses. These resources may take the form of seed collections stored in seed banks, trees growing in nurseries, animal breeding lines maintained in animal breeding programs or gene banks, etc. Germplasm collections can range from collections of wild species to elite, domesticated breeding lines that have undergone extensive human selection.
Holstein-Friesian (HF) gene bank collections were established in France  to conserve genetic diversity for this breed. The cryobanks have captured substantial amounts of genetic diversity for the HF compared with the current populations. A substantial part of the US, French, and Dutch collections seems to be genetically similar. On the other hand, the US collection in particular represents an interesting reservoir of HF genes of the past. Gene banks can play an important role in conserving genetic diversity within livestock breeds over time, and may support industry in the future when needed.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Dwarfing gene of wheat is

  1. Pal - 1

  2. Atomita - 1

  3. Norin - 10

  4. Pelita - 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Rht - B1b and Rht - D1b are dwarfing genes, derived from Norin - 10. Norin - 10, which was a semi - dwarf variety bred in Japan and released in 1935. Norin - 10 was used in order to improve lodging resistance in winter wheat. 

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Which is used to select genes from genomic library?

  1. Cloning vectors

  2. DNA probes

  3. Gene targets

  4. Restriction enzymes
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DNA probes are stretches of single-stranded DNA used to detect the presence of complementary nucleotide sequences (target sequences) by hybridization. Genomic library comprises large number of genes in the form of different nucleotide sequences of DNA fragments and they can be selected with the help of DNA probes.

So, the correct option 'DNA probes'.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Hot spots of biodiversity means

  1. Areas of earth that contain many endemic species

  2. Species serves as proxy for entire community in particular areas

  3. Species in particular niche/area

  4. Species diversity at particular area
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecological hot spots are large areas of Earth's land surface which have high concentrations of plant endemism and also experience high rates of habitat loss. In India, 4 ecological hot spots are presently identified. The Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland constitute the biodiversity hot spots in our country. One of the major features of these places is the presence of numerous endemic species.

So, the correct answer is 'Areas of earth that contain many endemic species'.

Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Hot spots are the examples of 

  1. Insitu conservation

  2. Exsitu conservation

  3. Wildlife protection

  4. Water conservation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • A biodiversity hotspot is an area which has lost at least 70 per cent of its primary native vegetation 

  • It contains at least 1,500 species of vascular plants which are endemic.

  • There are currently 36 recognized biodiversity hotspots.

  • These are Earth’s most biologically rich yet threatened terrestrial regions.

  • The hotspots provide crucial ecosystem services for human life, such as provision of clean water, pollination and climate regulation.
  • Conservation in the hotspots promotes sustainable management of these essential natural resources and supports economic growth, which also reduces drivers of violent conflict.
  • So, the answer is in-situ conservation.
Multiple choice zoology biodiversity and conservation hotspots and methods of conservation biodiversity: conservation conservation of biodiversity basis of classification in animals basis of the classification of animals criteria for animal classification

Where are Hotspots of biodiversity in India?

  1. Western ghats, Eastern ghats, Indo Burma

  2. Indo Burma, Eastern ghats and Sri Lanka Himalayas

  3. Western ghats & Sri Lanka, Indo Burma and Himalaya

  4. Eastern ghats & Sri Lanka, Indo Burma
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • A biodiversity hotspot is a biogeographic region that is both a significant reservoir of biodiversity and is threatened with destruction.
  • The term biodiversity hotspot specifically refers to biologically rich areas around the world that have lost at least 70 per cent of their original habitat.
  • There are 34 biodiversity hot spots across the globe, among which three occur in India such as the Western Ghats & Sri Lanka, Indo-Burma (North East India) and the Himalayas.
  • Hence Western ghats & Sri Lanka, Indo Burma and Himalaya are Hot Spots of biodiversity in India.ervo
  • So, the correct answer is 'The Western Ghats & Sri Lanka, Indo Burma and Himalaya'.