Environmental Science MCQs for Competitive Examination
Q. 1
The topmost portion of an ‘Energy Pyramid’ is
(A) Primary Producers
(B) Primary Consumers
(C) Secondary Consumers
(D) Decomposers
Answer: (A) Primary Producers
Explanation: N/A
Q. 2
Which part of a plant evaporates water?
(A) Stomata
(B) Fruit
(C) Branch
(D) Root
Answer: (A) Stomata
Explanation: N/A
Q. 3
Energy Flows in ecosystem is
(A) Unidirectional
(B) Bidirectional
(C) Multi directional
(D) None of the above
Answer: (A) Unidirectional
Explanation: N/A
Q. 4
Wild life week is celebrated on
(A) 2nd october to 8th october
(B) 15 th october to 21 st october
(C) 1st june to 7th june
(D) 15th june to 21st june
Answer: (A) 2nd october to 8th october
Explanation: N/A
Q. 5
Which of the following species is an example of link species?
(A) Clown fish
(B) Cuscuta
(C) Mycorrhiza
(D) Lichen
Answer: (A) Clown fish
Explanation: N/A
Q. 6
What type of radiation is trapped on the earth’s surface by the green house effect?
(A) Beta rays
(B) UV rays
(C) X rays
(D) IR rays
Answer: (D) IR rays
Explanation: Infrared rays
Q. 7
Species that occur in different geographical regions separated by special barrier
(A) Allopatric
(B) Sympatric
(C) Sibling
(D) None of the above
Answer: (A) Allopatric
Explanation: N/A
Q. 8
BAST is associated with
(A) Global warming
(B) Ozone holes
(C) Wild life
(D) Environmental management like ISO
Answer: (C) Wild life
Explanation: Board on Armed Force Science and Innovation (BAST)
Q. 9
The occurrence of pesticides like DDT in higher trophic levels is termed as
(A) Bioremediation
(B) Biomagnification
(C) Biological enhancement
(D) Biopollution
Answer: (B) Biomagnification
Explanation: N/A
Q. 10
Full form of CNG is
(A) Common National Gas
(B) Compressed Natural Gas
(C) Common Natural Gas
(D) Certified Natural Gas
Answer: (B) Compressed Natural Gas
Explanation: N/A
Q. 11
Which of the following interactions will not promote Co-evolution
(A) Commensalism
(B) Mutualism
(C) Parasitism
(D) Interspecific competition
Answer: (A) Commensalism
Explanation: N/A
Q. 12
Ozone layers is found in
(A) Thermosphere
(B) Stratosphere
(C) Troposphere
(D) Mesosphere
Answer: (B) Stratosphere
Explanation: N/A
Q. 13
Red data books contains data of
(A) All plant species
(B) All animal species
(C) Economically important species
(D) Threatened species
Answer: (D) Threatened species
Explanation: N/A
Q. 14
Minamata disease is due to
(A) Mercury
(B) Iodine
(C) Arsenic
(D) Cadmium
Answer: (A) Mercury
Explanation: N/A
Q. 15
Nuclear family refers to
(A) Any family born after 1950
(B) Family includes parents and their children
(C) Entire family including children, their parents and grandparents
(D) Only husband and wife
Answer: (B) Family includes parents and their children
Explanation: N/A
Q. 16
Carrier of Dengue disease is
(A) Aedes Mosquito
(B) Culex Mosquito
(C) Housefly
(D) Anopheles Mosquito
Answer: (A) Aedes Mosquito
Explanation: N/A
Q. 17
Biodiversity
(A) increases towards the equator
(B) decreases towards the equator
(C) remains same throughout the planet
(D) has no effect on change in latitude
Answer: (A) increases towards the equator
Explanation: N/A
Q. 18
The unfavourable alteration of environment due to human activities is termed as
(A) Ecological disturbance
(B) Catastrophe
(C) Ecological degradation
(D) Pollution
Answer: (A) Ecological disturbance
Explanation: N/A
Q. 19
Which of the following is a biodegradable waste ?
(A) Plastics
(B) Polythene
(C) Glass
(D) None of these
Answer: (D) None of these
Explanation: N/A
Q. 20
The ratio between regional and local species diversity is measured as
(A) Alpha diversity
(B) Beta diversity
(C) Gamma diversity
(D) Delta diversity
Answer: (B) Beta diversity
Explanation: N/A
Q. 21
Main reason of continuous decreasing of wild life
(A) Predation
(B) Cutting down of forests
(C) Destruction of habitat
(D) Hunting
Answer: (C) Destruction of habitat
Explanation: N/A
Q. 22
The carrying capacity of population is determined by its
(A) Population growth rate
(B) Natality
(C) Mortality
(D) Limiting resources
Answer: (D) Limiting resources
Explanation: N/A
Q. 23
The formula for exponential population growth is
(A) dN/dt=rN
(B) dt/dN=rN
(C) dN/rN=dt
(D) rN/dN=dt
Answer: (A) dN/dt=rN
Explanation: N/A
Q. 24
Which of the following is not an air pollutant ?
(A) Smoke
(B) Carbon dioxide
(C) Nitrogen gas
(D) Sulphur-dioxide
Answer: (C) Nitrogen gas
Explanation: N/A
Q. 25
Which of the following is a renewable source of energy
(A) Coal
(B) Petroleum
(C) Plants
(D) Uranium
Answer: (C) Plants
Explanation: N/A
Q. 26
Cement factory labourers are prone to.
(A) Leukemia
(B) Bone marrow disease
(C) Asbestosis
(D) Cytosilicosis
Answer: (D) Cytosilicosis
Explanation: N/A
Q. 27
Growing agricultural crops between rows of planted trees is known as
(A) Social forestry
(B) Jhum
(C) Taungya system
(D) Agroforestry
Answer: (C) Taungya system
Explanation: N/A
Q. 28
The maximum number of individuals that can be supported by a given environment is called
(A) Carrying capacity
(B) Population size
(C) Biotic potential
(D) Environmental resistance
Answer: (A) Carrying capacity
Explanation: N/A
Q. 29
Which among the following Protocols/Conventions is dedicated for protecting biodiversity from the potential risks caused by Living Modified Organisms (LMO) from modern technology?
(A) Cartagena Protocols
(B) Nagoya Protocols
(C) Bonn Convention
(D) Vienna Convention
Answer: (A) Cartagena Protocols
Explanation: N/A
Q. 30
All species of Lemur are endemic to
(A) New Caledonia
(B) Seychelles Islands
(C) Galapagos Islands
(D) Madagaskar
Answer: (D) Madagaskar
Explanation: N/A
