Man can maintain an ecological balance in the biosphere by

(1) deforestation

(2) developing new breeds of cultivated plants and domesticated animals

(3) using insecticides and pesticides

(4) understanding of the delicate balance in the relative number of organisms

Which of the following exhibits unidirectional flow in an ecosystem?

(1) Light

(2) Energy

(3) Water

(4) Biomass

Rubber plantations are found in

(1) Temperate forests

(2) Mountain regions

(3) Polar regions

(4) Equatorial regions

“Tidal forest” is otherwise called :

(1) Evergreen forest

(2) Monsoon forest

(3) Mangrove forest

(4) Coniferous forest

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