ecology & bio environment geography section 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 1 [SCC CML 2001]

Evergreen rain forest is mainly found in regions having well distributed annual rainfall

a) More than 200 cm

b) 50-100 cm

c) 100-200 cm

d) Below 50 cm

Answer: (a)

Tropical evergreen forests are usually found in areas receiving more than 200 cm of rainfall and having a temperature of 15 °C to 30 °C.

They occupy about seven per cent of the Earth's land surface and harbour more than half of the world’s plants and animals.

Question : 2 [SCC LDEO 2012]

The word Biosphere refers to :

a) Zone of water on earth which can support life.

b) Part of earth surface which can support the flora

c) Parts of air around earth a where life can exist

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

Answer: (d)

Biosphere refers to that portion of the Earth which is occupied by the various forms of life, in addition to the three main physical zones, the Lithosphere, the Hydrosphere and the Atmosphere.

Question : 3 [SCC CHSL 2014]

Tropical rain forest is characterised by

a) Minimum biodiversity

b) Least productivity

c) Maximum biodiversity

d) Absence of trees

Answer: (c)

Tropical rainforests exhibit high levels of biodiversity. Around 40% to 75% of all biotic species are indigenous to the rainforests.

Rainforests are home to half of all the living animal and plant species on the planet. Two-thirds of all flowering plants can be found in rainforests.

Question : 4 [SCC MTS 2017]

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

a) Southern Oscillation

b) La Nina

c) El Nino Modoki

d) El Nino

Answer: (d)

El Niño is an irregularly periodical variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean.

Scientists have found an association between El Nino and global warming since El Nino events cause short-term spikes in global average surface temperature.

For example, an increase in the frequency and magnitude of El Niño events have triggered warmer than usual temperatures over the Indian Ocean.5

Question : 5 [SCC LDEO 2012]

“Tidal forest” is otherwise called :

a) Coniferous forest

b) Monsoon forest

c) Mangrove forest

d) Evergreen forest

Answer: (c)

Tidal forest is also called Mangrove forest.

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