All the ecosystems taken together in a geographical area form a bigger unit called:

(1) biosphere

(2) territory

(3) biome

(4) community

The word Biosphere refers to :

(1) Zone of soil, water, and air around earth capable of supporting the flora and fauna.

(2) Part of the earth surface which can support the flora

(3) Parts of air around earth where life can exist

(4) Zone of water on earth which can support life

Which of the following metals contribute to the biomagnification problem in the ecosystem?

(1) Mercury

(2) Chromium

(4) Copper

(4) Lead

What is the percentage coverage of Tropical Forest on earth’s landmass ?

(1) 7

(2) 12

(3) 17

(4) 25

The fur of the animals living in colder regions

(1) protects them from water

(2) traps the air and keeps them warm

(3) protects them from enemies

(4) makes them appear beautiful

Which of the following phenomena is supposedly associated with global warming?

(1) Southern Oscillations

(2) El Nino (3) La Nino

(4) El Nino Modiki

Which of the following is a renewable resource?

(1) Coal 

(2) Mineral oil

(3) Natural gas

(4) Forests

Taiga means :

(1) Deciduous forests

(2) Coniferous forests

(3) Grass lands

(4) Deserts

Virtually treeless, sparse vegetation is found in :

(1) Taiga

(2) Alpine

(3) Tundra

(4) Chapparal

Name the condition which influences the development of plants into distinctive forms.

(1) Climatic conditions

(2) Soil conditions

(3) Environmental conditions

(4) Social conditions

Species which has restricted distribution is called

(1) Eco species

(2) Endemic

(3) Sympatric

(4) Allopatric