Biology : Biodiversity and Conservation

Assertion :Now-a-days, the biodiversity is declining with an accelerated rate.

Reason : Exotic species are considered to be a major cause of extinction of species.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are hue but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false.

Which of the following is best method of germplasm conservation

• Herbarium

• Botanical garden

• Seed bank

• Zoological park

Assertion: A mangrove tree growing in marshy place has pneumatophores.

Reason: Pneumatophores help in better anchorage to marshy soil.

• If both assertion and reason are true and reason is the correct explanation of assertion

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Which of the following statements is not true

• The biodiversity decreases with increasing latitude.

• The biodiversity decreases with increasing altitude.

• The fishes show greatest biodiversity among vertebrates. 

• The biodiversity of bryophytes is greater than that of angiosperms

Assertion: There are 34 biodiversity hotspots in the world.

Reason: High level of species richness is a criteria for selection of a biodiversity hotspot.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both assertion and reason are false

The total number of biodiversity hotspots in the world are

• 72

• 34

• 52

• 24

Photochemical smog formed in congested metropolitan cities mainly consists of

• ozone, peroxyacyl nitrate and NO_x

• smoke, peroxyacyl nitrate and SO₂

• hydrocarbons, SO₂ and CO₂

• hydrocarbons, ozone and SO₂

Which of the following has highest diversity in India?

• Mango

• Dolphin

• Tiger

• Orchids

Which of the following options consist of nonessential amino acids only

• Valine, leucine, glycine, alanine

• Glycine, serine, proline, glutamic acid

• Proline, aspartic acid, glutamic acid, methionine

• Cysteine, tyrosine, alanine, isoleucine

One out of the following is not responsible for biodiversity loss

• Alien species invasion

• Co-extinction

• Ex-situ conservation

• Deforestation