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World Environment And Ecology MCQ Question and Answer | Geography MCQ Question

World Environment And Ecology MCQ Questions and answers with easy explanations. Geography section provides you all type of mcq questions on World Environment And Ecology with explanations. World Environment And Ecology MCQ is important for exams like IBPS, SCC, UPSC, NEET etc. Page-2 section-1

11
Where is the secretariat of the Conference on Biological Diversity?
Discuss
Answer & Solution
Answer: Option C
Solution:
The secretariat of Conference on Biological Diversity (CBD) is in Montreal. It was established to support goals of Earth Summit which happened in Brazil in 1992. Its functions are organizing meetings, preparing reports, assisting member countries and work collectively with othee international organisations.
12
Which one of the following ecosystems covers the largest area of the earth's surface?
Discuss
Answer & Solution
Answer: Option D
Solution:
The water part of the earth occurs 75% of the total earth's area.Rest part is the land area. So, the marine ecosystem occurs the largest ecosystem in our planet as it is also the largest part of our planet.
13
The correct sequence in decreasing order of the albedo values of these ecosystem is:
1. Taiga
2. Tropical evergreen
3. Tropical deciduous
4. Tundra
Discuss
Answer & Solution
Answer: Option C
Solution:
The correct sequence in decreasing order of the albedo values of these ecosystem are Tundra, Taiga, Tropical deciduous and Tropical evergreen.
14
Select the correct answer from the following:
1. Melting of polar ice caps and subsequently rise in the sea level is the most important effect of global warming.
2. The sea level is likely to rise by one meter by 2070 AD if the present level of global warming is not controlled.
3. All the coral islands in the world will be submerged.
4. By 2044 AD, Fiji is likely to be submerged and rise in the sea level by the same year will pose a grave danger to the Netherlands.
Discuss
Answer & Solution
Answer: Option A
Solution:
All the answers are correct. Melting of polar ice caps and subsequently rise in the sea level is the most important effect of global warming. The sea level is likely to rise by one meter by 2070 AD if the present level of global warming is not controlled. All the coral islands in the world will be submerged. By 2044 AD, Fiji is likely to be submerged and rise in the sea level by the same year will pose a grave danger to the Netherlands.
15
The Ozone hole over Antarctica was discovered in
Discuss
Answer & Solution
Answer: Option B
Solution:
The discovery of the annual depletion of ozone above the Antarctic was first announced in a paper by Joe Farman, Brian Gardiner and Jonathan Shanklin which appeared in Nature in May 1985. The major concerns about environment increased globally after this discovery.
16
Which of the following has maximum bio-diversity?
Discuss
Answer & Solution
Answer: Option D
Solution:
Earth's most diverse and iconic biomes is the tropical rainforest. The tropical rainforest biome has four main characteristics: very high annual rainfall, high average temperatures, nutrient-poor soil, and high levels of biodiversity (species richness).
17
The Biosphere is a region of earth which supports life. It includes-
1. Hydrosphere
2. Lithosphere
3. Stratosphere
4. Troposphere
Discuss
Answer & Solution
Answer: Option B
Solution:
The Biosphere is a region of earth which supports life. It includes Hydrosphere, Lithosphere and Troposphere. Life on earth is found in seas, oceans (water); on land surface (crust) & in air. These 3 combined together to form biosphere.
18
Of the solar energy coming into the Biosphere, what percentage of it is actually used in the photosynthesis?
Discuss
Answer & Solution
Answer: Option D
Solution:
More than 2% of the solar energy coming into the Biosphere is actually used in the photosynthesis. Most solar energy occurs at wavelengths unsuitable for photosynthesis. Between 98% and 99% of solar energy reaching the Earth is reflected from leaves and other surfaces and absorbed by other molecules, which convert it to heat. Thus, only 1% to 2% is available to be captured by plants.
19
Which of the following is least likely to be an effect of global warming?
Discuss
Answer & Solution
Answer: Option C
Solution:
Decreased rate of photosynthesis in vegetation is least likely to be an effect of global warming. Carbon dioxide warms the Earth because it is a greenhouse gas in the atmosphere, but it also causes plants to provide less evaporative cooling.
20
EL-Nino is
Discuss
Answer & Solution
Answer: Option A
Solution:
EL-Nino is Warm Ocean Current. El Nino (Spanish name for the male child), initially referred to a weak, warm current appearing annually around Christmas time along the coast of Ecuador and Peru and lasting only a few weeks to a month or more.