ecology & bio environment geography section 1 MCQ Questions & Answers Detailed Explanation

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The following question based on Ecology & Bio geography topic of indian geography mcq

Questions : Tropical rain forest is characterised by

(a) Minimum biodiversity

(b) Least productivity

(c) Maximum biodiversity

(d) Absence of trees

The correct answers to the above question in:

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.

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Read more bio ecology environment Based Indian Geography Questions and Answers

Question : 1

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 : 2

“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.

Question : 3

The cause of loss of forest cover is

a) Toursim & pilgrimage

b) Building Industry

c) Increasing population

d) Agriculture

Answer: (c)

Deforestation is a consequence of a quantum jump in population and the consequent over-exploitation of our natural ecosystems for space, energy and materials. Expanding agriculture due to a burgeoning population base is one of the most important causes of deforestation.

As demands on agricultural products rise more and more land is brought under cultivation for which forests are cleared, grass-lands ploughed, uneven grounds levelled, marshes drained and even land underwater is reclaimed.

Question : 4

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 : 5

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.

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