MCQ Practice Test - CHAPTER 13 BIODIVERSITY AND CONSERVATION

Welcome to your Ncert- Class 12-Biology-Biodiversity and Conservation

Instruction

Total Questions : 20

Total Marks : 20 x 4 = 80 Marks

Each Correct Question carries : 4 Marks

Each incorrect Question Carries : -1 Marks

Each Unattempted Question carry : 0 Marks

Be careful On Negative Markings

Choose the right one which denotes genetic hierarchy.

Populations - individuals - chromosomes - nucleotides - genes

Genes - nucleotides - chromosomes - individuals - populations

Nucleotides - genes - chromosomes - individuals - populations

Chromosomes - nucleotides - genes - individuals - populations

None

Below are the environmental benefits of organic farming.

1. It aims to produce food while establishing an ecological balance to prevent soil fertility or pest problems.

2. It permits the use of GMOs.

3. It produces more biodiversity than other farming systems.

4. It improves the water retention capacity of the soil.

Which of the statements given above is/are true?

1 and 4

All of these

1,2 and 4

1, 3 and 4

None

Organisms live as well as evolve through

in vitro conservation

germplasm banks

in vivo conservation

ex situ conservation

None

Which among the following pairs is not correctly matched?

Decomposers : Breaks down detritus through digestion

Omnivores : Consume both consumers as well as producers

Tertiary consumers : Relies on energy from chemicals which they get from inorganic material

Detritivores : Consume tissues of dead animal and organic waste

None

Which of the following is referred as Evil Quartet with reference to loss of biodiversity?

Habitat loss and fragmentation, overexploitation, alien species invasion, co-extinction

Habitat destruction, co-extinction, deforestation, species richness

Overexploitation, grazing, decompositon, extinction

Species richness, extinctions, deforestation, erosion

None

Which of the following practices has caused maximum damage to the diversity of Indian forests?

Jhum cultivation

Taungya cultivation

Block cutting

Selective harvesting

None

Population of California Candor is declining due to

Increasing cleanliness

Increasing pesticide concentration

Increasing pollution

Change in surroundings

None

According to theory of special creation which one is wrong?

Diversity was same since the creation.

All living organisms were created as such.

The Earth is about 4000 years ago.

Diversity will increase as the changes in the environment come

None

One of the most important functions of botanical gardens is that -

They provide the natural habitat for wild life

They provide a beautiful area for reccreation

One can observe tropical plants there

They allow ex-situ conservation of germ plasm

None

10.

Threatened and endangered species are being protected in which of the following ways?

I. Captive breeding

II. Wildlife refuges

III. Laws and regulations

I and III only

II and III only

I, II and III

II only

None

11.

What is 'Typha'?

It is a perennial herb, grown in fresh water.

None of the above.

It is the world's second known synthetic virus.

It is a clot-busting drug, developed by Hyderabad-based Shanta Biotechnics in India.

None

12.

Various forms of life should be conserved as they:

Will be lost otherwise

Are important for maintaining balance of nature

Have economic values

Contain diverse genetic resources

None

13.

Best method to preserve the wild relatives of plants is

Cryopreservation

By growing them in natural habitats

Gene library

By storing seeds

None

14.

The method by which endangered plant species are conserved in a botanical garden or in some controlled circumstances is called

Afforestation

In-situ conservation

Ex-situ conservation

Deforestation

None

15.

Which of the following groups represent features of ex situ conservation

costly, allows captive breeding & preserves recalcitrant seeds

examples are botanical garden and biosphere reserve

cheaper, allows captive breeding & preserves recalcitrant seeds

conserves plant germplasm & allows people participation

None

16.

Polar bears are just one species whose biodiversity has been affected by human activities. Which of these is the greatest threat to the polar bears?

Habitat fragmentation

Organic pollutants

Melting of glaciers

Increased population

None

17.

Which one of the following pairs of organisms are exotic species introduced in India?

Water hyacinth, Prosopis cinereria

Ficus religiosa, Lantana camara

Lantana camara, water hyacinth

Nile perch, Ficus religious

None

18.

Botanical gardens and zoological parks have.

Collection of endemic living species only

Collection of only local plants and animals

Collection of exotic living species only

Collection of endemic and exotic living species

None

19.

Given below are a few statements related to biodiversity. Pick those that correctly describe the concept of biodiversity.

(i) Biodiversity refers to the different species of flora and fauna present in an area.

(ii) Biodiversity refers to only the flora of a given area.

(iii) Biodiversity is greater in a forest.

(iv) Biodiversity refers to the total number of individuals of a particular species living in an area.

(ii) and (iv)

(i) and (iii)

(ii) and (iii)

(i) and (ii)

None

20.

Which of the following statement for biosphere reserve is incorrect?

They are also notified as national parks.

Transition zone is legally protected as undisturbed ecosystem.

They are meant for preserving genetic diversity in representative ecosystem.

Important in conservation, development, scientific research and monitoring.

None

Chapter 11 Organisms and Populations

CHAPTER 12- ECOSYSTEM

CHAPTER 13 BIODIVERSITY AND CONSERVATION

Instruction

Curriculum

Ncert - class 12 - Unit X - Ecology

Chapter 11 Organisms and Populations

CHAPTER 12- ECOSYSTEM

CHAPTER 13 BIODIVERSITY AND CONSERVATION

MCQ Practice Test – CHAPTER 13 BIODIVERSITY AND CONSERVATION

Instruction