Biodiversity and Conservation

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Question
CBSEENBI12002482

A collection of plants and seeds having diverse alleles of all the genes of a crop is called

  • germplasm

  • gene library

  • genome

  • herbarium

Solution

A.

germplasm

A germplasm is a collection of genetic resources for organisms. For plants, the germplasm may be stored as a seed collection.It includes diverse alleles of all the genes of an organism.

Sponsor Area

Question
CBSEENBI12002314

A location with luxuriant growth of lichens on the trees indicates that the

  • trees are very healthy

  • trees are heavily infested

  • the location is highly polluted

  • location is not polluted

Solution

D.

location is not polluted

The situation suggests that the site is no polluted as lichens are the bioindicators for air pollution. These are the living organisms that respond in an especially clear way to a change in the environment. Te lichens are useful indicators of especially SO2 pollution because they derive their water and essential nutrients mainly from the atmosphere rather than from the soil.

Question
CBSEENBI12002317

A species facing extremely high risk of extinction in the immediate future is called

  • Vulnerable 

  • endemic

  • critically endangered 

  • extinct

Solution

C.

critically endangered 

The extremely highest risk category assigned by the IUCN  Red List for wild species is critically endangered species. These are those species that are facing a very high risk of extinction in the wild. There are currently 2129 animals and 1821 plants which have been recorded in this category.

Question
CBSEENBI12002312

An example of ex-situ conservation is 

  • National Park

  • Seed bank

  • wildlife Sanctuary

  • Sacred Grove

Solution

B.

Seed bank

Ex -situ or off-site conservation is the process of protecting endangered species fo plants and animals outside their natural habitat. This involves the conservation of genetic resources as well as species, Its example included seed banks, filed microbial culture collection, etc.

Question
CBSEENBI12002525

Biodiversity of a geographical region represents

  • endangered species found in the region

  • the diversity in the organism living in the region

  • genetic diversity present in the dominant species of the region

  • species endemic to the region

Solution

B.

the diversity in the organism living in the region

Biodiversity is the term popularised by the sociobiologist Edward Wilson to describe the combined diversity at all the levels of biological organisation. The most important of the are genetic diversity, species diversity and ecological diversity.