Tag: biology

Questions Related to biology

In Red data book, on the basis of the degree of threat, ............. categories have been given.

biology main natural resources classification of threatened species red data book methods of conservation

  1. Nine

  2. Ten

  3. Six

  4. Five

Show answer
Correct Option: A
Explanation:

In Red data book, on the basis of the degree of threat, 9 categories have been given.

Species are classified by the IUCN Red List into nine groups, set through criteria such as rate of decline, population size, the area of geographic distribution, and degree of population and distribution fragmentation.

  1. Extinct (EX) – No known individuals remaining.
  2. Extinct in the wild (EW) – Known only to survive in captivity, or as a naturalized population outside its historic range.
  3. Critically endangered (CR) – Extremely high risk of extinction in the wild.
  4. Endangered (EN) – High risk of extinction in the wild.
  5. Vulnerable (VU) – High risk of endangerment in the wild.
  6. Near threatened (NT) – Likely to become endangered in the near future.
  7. Least concern (LC) – Lowest risk. Does not qualify for a more at risk category. Widespread and abundant taxa are included in this category.
  8. Data deficient (DD) – Not enough data to make an assessment of its risk of extinction.
  9. Not evaluated (NE) – Has not yet been evaluated against the criteria.

When discussing the IUCN Red List, the official term "threatened" is a grouping of three categories: Critically Endangered, Endangered, and Vulnerable.

Head office of IUCN is located at ......... in Switzerland.

biology main natural resources classification of threatened species red data book methods of conservation

  1. Morges

  2. New York

  3. Moscow

  4. Rio de Janerio

Show answer
Correct Option: A
Explanation:

The head office of IUCN is located at Morges in Switzerland.

The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources.

Different species are classified into different threat categories in the

biology main natural resources classification of threatened species red data book methods of conservation

  1. Blue Data Book

  2. Yellow Data Book

  3. Black Data Book

  4. Red Data Book

Show answer
Correct Option: D
Explanation:

Red data book will provide information about endangered species. The Red Data Book was established for documenting rare and endangered species of animals, plants and other organisms. Species which are facing the high risk of extinction are called endangered species. Some of the endangered plants include Ebony tree, Umbrella tree, Indian mallow etc., and few of the endangered animals are Blackbuck, One Horned Rhinoceros, and Asiatic Lion etc.

Thus, the correct answer is option D. 

Red Data Book contains information about

biology main natural resources classification of threatened species red data book methods of conservation

  1. Red coloured insects

  2. Red coloured fishes

  3. Red eyed birds

  4. Endangered plants and animals

Show answer
Correct Option: D
Explanation:

'Red Data Book' enlists the rare and endangered species of animals, plants and fungi, as well as some local subspecies. The book provides a central information source in organizing studies and monitoring programs on rare and endangered species and their habitats. It is regularly consulted when developing and implementing special measures for the protection and rehabilitation of such species.

The taxon likely to join the category of endangered category in near future is

biology main natural resources classification of threatened species red data book methods of conservation

  1. Extinct

  2. Rare

  3. Vulnerable

  4. Living fossil

Show answer
Correct Option: C
Explanation:

The taxon likely to join the category of endangered category in near future is Vulnerable if the causal factors continue to operate. Vulnerable included all those taxa in which most or all population decrease in size because of over-exploitation, extensive destruction of habitat and other environmental disturbances. 

Therefore, the correct answer is option C.

The knowledge of which of the following factors does not help in the management of endangered animal?

biology main natural resources classification of threatened species red data book methods of conservation

  1. Habitat of the animal

  2. Behavior of the animal

  3. Food habit of the animal

  4. Name of the animal

Show answer
Correct Option: D

Viable materials of endangered species can be preserved by

biology main natural resources classification of threatened species red data book methods of conservation

  1. Gene bank

  2. Gene library

  3. Gene pool

  4. Herbarium

Show answer
Correct Option: A

Red data book which maintains the list of endangered species, was released by

biology main natural resources classification of threatened species red data book methods of conservation

  1. IUCNNR

  2. The Bombay Natural History Society

  3. WPSI

  4. IUCN

Show answer
Correct Option: D
Explanation:

IUCN is 'International Union for the Conservation of Nature and Natural Resources', which is now called as 'World Conservation Union' or WCU. It has its headquarters at Morges, Switzerland. It maintains a 'Red Data Book' or 'Red List' which is a catalog of taxa facing the risk of extinction.

............. is the taxon, which is likely to move into endangered category in near future, if conditions prevail as it is.

biology main natural resources classification of threatened species red data book methods of conservation

  1. Vulnerable

  2. Endanger

  3. Rare

  4. Extinct

Show answer
Correct Option: A
Explanation:

Endangered species is a species facing a high risk of extinction in the wild in the near future due to a decrease in its habitat, excessive predation or poaching.
Vulnerable species are those for which presently the population is sufficient but is undergoing depletion due to some factors so that it is facing the risk of extinction in a medium term.
Rare species are species with naturally small populations, either localized or thinly scattered.
Extinct species are the taxon completely eliminated or died out from Earth, e.g., Dodo.

According to IUCN 'Red List', what is the status of red panda (Ailurus fulgens)?

biology main natural resources classification of threatened species red data book methods of conservation

  1. Vulnerable species

  2. Critically endangered species

  3. Extinct species

  4. Endangered species

Show answer
Correct Option: D
Explanation:

Endangered species is a species facing a high risk of extinction in the wild in the near future due to a decrease in its habitat, excessive predation or poaching. 

The percentage number of endangered species in the list of threatened ones is 19 percent mammals, 17 percent birds, 21 percent reptiles, 22 percent amphibians and 19 percent angiosperms. 
In India, their number is 54 animals and 113 plants. E.g., Ailurus fulgens (red panda), Bentinckia nicobarica. Some other examples are blue whale, Asiatic wild ass and lion-tailed macaque.