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CSAT Prelims Ecology - General Knowledge Questions and Answers for UPSC Exam | Page-6

Questions
51 If a wetland of international importance is brought under the ‘Montreux Record’, what does it imply?
A Changes in ecological character have occurred, are occurring or are likely to occur in the wetland as a result of human interference
B The country in which the wetland is located should enact a law to prohibit any human activity within five kilometers from the edge of the wetland
C The survival of the wetland depends on the cultural practices and traditions of certain communities living in its vicinity and therefore the cultural diversity therein should not be destroyed
D It is given the status of ‘World Heritage Site’

Answer: Option [A]
52 In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
A insects and fungi
B water limits and fire
C limited sunlight and paucity of nutrients
D none of the above

Answer: Option [B]
53 Which of the following can be threats to the biodiversity of a geographical area?
I. Global warming
II. Fragmentation of habitat
III. Invasion of alien species
IV. Promotion of vegetarianism

Select of the correct answer using the codes given be

A I, II and III only
B II and III only
C I and IV only
D I, II, III and IV

Answer: Option [A]
54 With reference to the food chains in ecosystems, which of the following kinds of organism is/are known as decomposer organism/organisms?
I. Fungi
II. Virus
III. Bacteria

Select the correct answer using the codes given below.

A I only
B II and III only
C I and III only
D I, II and III

Answer: Option [C]
55 If you walk through countryside, you are likely to see some birds stalking alongside the cattle to seize the insects disturbed by their movement through grasses. Which of the following is/ are such birds?
I. Common myna
II. Painted Stork
III. Black-necked Crane

Select the correct answer using the code given below.

A I only
B II and III only
C I and II only
D I, II and III

Answer: Option [A]
56 With reference two non-conventional energy sources called ‘coalbed methane’ and ‘shale gas’ consider the following statements:
I. In India, abundant coalbed methane sources exist, but so far no shale gas sources have been found.
II. Coalbed methane is the pure methane gas extracts from coal seams, while shale gas is a mixture of propane and butane only that can be extracted from fine-grained sedimentary rocks.

Which of the statements given above is/ are correct?

A I only
B II only
C Both I and II
D Neither I nor II

Answer: Option [C]
57 Consider the following:
I. Photosynthesis
II. Respiration
III. Decay of organic matter
IV. volcanic action

Which of the above add carbon dioxide to the carbon cycle on earth?

A I and IV only
B II and III only
C II, III and IV only
D I and III only

Answer: Option [C]
58 Among the following organisms, which one does not belong to the class of other three?
A Spider
B Scorpion
C Mite
D Crab

Answer: Option [B]
59 With reference to an organization known as ‘Birdlife International’, which of the following is/ are correct?
I. It is a Global Partnership of Conservation Organization.
II. The concept of ‘biodiversity hotspots’ originated from this organization.
III. It identifies the sites known/ referred to as ‘Important Bird and Biodiversity Areas’.

Select of the correct answer using the code given below.

A I only
B II and III only
C I and III only
D I, II and III

Answer: Option [C]
60 With reference to technologies for solar power production, consider the following statements:
I. ‘Photovoltaics’ is a technology that generates electricity by direct conversion of light into electricity, while ‘Solar Thermal’ is a technology that utilizes the Sun’s rays to generate heat which is further used in electricity generation process.
II. Photovoltaice generates Alternating Current (AC), while solar Thermal generates Direct Current (DC).
III. India has manufacturing base for Solar Thermal technology, but not for Photovoltaics.

Which of the statement given above is/ are correct?

A I only
B I and II only
C II and III only
D I, II and III

Answer: Option [A]

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