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CBSE 12th Standard Biology Subject Environmental Issues Ncert Exemplar MCQ Questions 2021

Published on: 25/05/2021

QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks

Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology

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Std: 12th Standard CBSE - Biology

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Questions:

Multiple Choice Question

10 x 1 = 10

Which one of the following is correct expanded form of the acronym?

(a)

IPCC-International panel for climate change

(b)

UNEP-United Nations Environmental Policy

(c)

EPA-Environmental Pollution Agency

(d)

The IUCN-International Union for Conservation of nature and natural Resources

Hotspots of biodiversity means

(a)

area of the earth that contains many endemic species

(b)

species servers as a proxy for entire communities in particular area

(c)

species in particular niche/area

(d)

species diversity at particular area

the natural habitat of Indian Rhinoceros is found in which Indian state?

(a)

Arunachal Pradesh

(b)

Assam

(c)

Himachal Pradesh

(d)

Uttar Pradesh

What is common to the techniques (i) in vitro fertilization, ii)Cryopreservation and, iii)tissue culture?

(a)

All are in situ conservation methods.

(b)

All are ex situ conservation methods

(c)

All require ultra modern equipment and large space.

(d)

All are methods of conservation of extinct organisms.

The active chemical drug reserpine is obtained from:

(a)

Datura

(b)

Rauwolfia

(c)

Atropa

(d)

Papaver

Which of the following forests is known as the 'lungs of the planet Earth'?

(a)

Taiga forest

(b)

Tundra forest

(c)

Amazon rain forest

(d)

Rainforest of North East India

Which was the first National park established in India?

(a)

Kanha

(b)

Jim Corbett

(c)

Kaziranga

(d)

Gir

A taxon which is facing an extremely high risk of extinction in the wild in immediate future is known as

(a)

rare

(b)

exotic

(c)

vulnerable

(d)

endangered

(e)

critically endangered

Read the two statements A and B
Statement A: Diversity observed in the entire geographical area is called gamma diversity.
Statement B: Biodiversity decrease from high altitude to low altitude, Identify the correct choice from these given below:

(a)

statement A is correct, B is worng

(b)

Statement B is correct, A is wrong

(c)

both the statement A and B are correct

(d)

both the statement A and B are wrong

10.

What is the main cause for the extinction of some species in a tropical forest?

(a)

Deforestation