Que- Energy flow in ecosystem is
a. Unidirectional
b. Bidirectional
c. Multidirectional
d. None of the above
Answer- Unidirectional
Explanation- Energy flow in ecosystem is Unidirectional.
Que- Salmonellosis is a disease related to consumption of
a. Chicken
b. Eggs
c. Mutton
d. Fish
Answer- Fish
Explanation- No explanation is given for this question
Que- An association between two individuals or populations where both are benefitted and where neither can survive without the other is
a. competition
b. commensalism
c. mutualism
d. protocoperation
Answer- mutualism
Explanation- An association between two individuals or populations where both are benefitted and where neither can survive without the other is mutualism.
Que- The relationship between nitrogen fixing bacteria and leguminous plants is an example for
a. Parasitism
b. Predation
c. Mutualism
d. Commensalism
Answer- Mutualism
Explanation- The relationship between nitrogen fixing bacteria and leguminous plants is an example for Mutualism.
Que- Mycorrhiza represents
a. Symbiotic association between a fungus and liverworts
b. Parasitic association between a fungus and an alga
c. Parasitic association between a fungus and roots of plants
d. Symbiotic association between a fungus and roots of higher plants
Answer- Symbiotic association between a fungus and roots of higher plants
Explanation- A mycorrhiza is a symbiotic association between a green plant and a fungus. The plant makes organic molecules such as sugars by photosynthesis and supplies them to the fungus, and the fungus supplies to the plant water and mineral nutrients, such as phosphorus, taken from the soil.
Que- Which of the following interactions will not promote co evolution?
a. Commensalism
b. Mutualism
c. Parasitism
d. Interspecific competition
Answer- Commensalism
Explanation- Commensalism - an association between two organisms in which one benefits and the other derives neither benefit nor harm. It does not promote coevolution.
Que- Earth summit was held in
a. Stockholm in 1972
b. Rio de Jeneiro in 1992
c. Paris in 1992
d. New York in 1972
Answer- Rio de Jeneiro in 1992
Explanation- The United Nations Conference on Environment and Development (UNCED), also known as the Rio de Janeiro Earth Summit, the Rio Summit, the Rio Conference, and the Earth Summit (Portuguese: ECO92), was a major United Nations conference held in Rio de Janeiro from 3 to 14 June in 1992.
Que- The unit of measurement of intensity of sound is in _________
a. Decibels
b. Lux
c. Parsec
d. Candela
Answer- Decibels
Explanation- Although the units for sound intensity are technically watts per meter squared, it is much more common for it to be referred to as decibels, dB. A decibel is a ratio of the observed amplitude, or intensity level to a reference, which is 0 dB.
Que- Which of the following spatial units is the largest in terms of scale?
a. River segments
b. Mesohabitats
c. Patches
d. River reaches
Answer- River segments
Explanation- River segments is the largest in terms of scale.
Que- _________ is a source of all minerals.
a. air
b. water
c. wildlife
d. soil
Answer- soil
Explanation- Soil is a source of all minerals.
Que- _________ energy is the energy stored within the earth.
a. Geothermal
b. Mechanical
c. Wind
d. Thermal
Answer- Geothermal
Explanation- Thermal energy, or heat, is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster. Geothermal energy is the thermal energy in the earth. Motion energy is energy stored in the movement of objects.
Que- The largest brackish water lake situated in Asia is in Orissa. Which is the lake?
a. Chilka lake
b. Vembanad lake
c. Woolar lake
d. Dal lake
Answer- Chilka lake
Explanation- Chilika, the largest brackish water lake in Asia. Its is home to many migratory birds in the winters.
Que- IUCN is also called as
a. Man and Biosphere program
b. World Conservation Union
c. World Conservation Consortium
d. World Wide Conservation Union
Answer- World Conservation Union
Explanation- It changed its name to the International Union for Conservation of Nature and Natural Resources (IUCN) in 1956 and was also known as the World Conservation Union (IUCN) from 1990 to 2008. The IUCN is the world's oldest global environmental organization. Its headquarters are in Gland, Switzerland.
Que- 5th June is observed as
a. World forest day
b. World environment day
c. World wildlife day
d. World population day
Answer- World environment day
Explanation- World Environment Day is held each year on June 5. It is one of the principal vehicles through which the United Nations (UN) stimulates worldwide awareness of the environment and enhances political attention and action.
Que- Condensation nuclei may be:
a. Particles of dust
b. Nitric acid particles
c. Smoke from forest fires
d. All of these
Answer- All of these
Explanation- Condensation nuclei are tiny particles in the air on which water vapyor condenses and they are the key to making clouds, fog, haze, rain, and other forms of precipitation.
Que- _______ is an example of " bottom feeders " .
a. Cat fish
b. Frog
c. Snake
d. Tadpole
Answer- Cat fish
Explanation- Cat fish is an example of " bottom feeders " .
Que- Moisture in the air is known as
a. Water
b. Fog
c. Snow
d. Humidity
Answer- Humidity
Explanation- Moisture in the air is known as humidity. Humidity is the measure of the amount of water vapour in a general area.
Que- " Smog " is a mixture of
a. Smoke and Fog
b. Snow and Fog
c. Snow and Dust
d. Sulphur Dioxide and Fog
Answer- Smoke and Fog
Explanation- Smog is a kind of air pollution, originally named for the mixture of smoke and fog in the air. Classic smog results from large amounts of coal burning in an area and is caused by a mixture of smoke and sulfur dioxide.
Que- The major pollutant from automobile exhaust is
a. NO
b. CO
c. SO2
d. Soot
Answer- CO
Explanation- The major pollutant from automobile exhaust is Carbon monoxide (CO).
Que- Which one of the following cycle is not a gaseous biogeochemical cycle in ecosystem?
a. Nitrogen
b. Carbon
c. Sulphur
d. Phosphorus
Answer- Phosphorus
Explanation- Phosphorus cycle is a sedimentary biogeochemical cycle. It describes the lithosphere, hydrosphere and biosphere and the main reservoir pool is lithosphere.
Que- All are primary pollutants except
a. Ammonia
b. Peroxyacetyl Nitrate (PAN)
c. Sulfur dioxide
d. Hydrogen sulfide
Answer- Peroxyacetyl Nitrate (PAN)
Explanation- All are primary pollutants except Peroxyacetyl Nitrate (PAN).
Que- Which one of the following is not a primary pollutant?
a. Particulate matter
b. Carbon monoxide
c. Sulpuric acid
d. Nitrogen oxides
Answer- Sulpuric acid
Explanation- Ozone is not a primary pollutant since it is formed by the photo-chemical reaction of oxygen with the UV rays and not directly discharged into the atmosphere by a source. Similarly, sulphuric acid is also not a primary pollutant.
Que- Chipko movement is a public agitation that occurred in
a. Mansbal area in Kashmir
b. Silent valley in Kerala
c. Sundarban area in Bengal
d. Tehri Garhwal area of Uttar Pradesh
Answer- Tehri Garhwal area of Uttar Pradesh
Explanation- The Chipko movement or Chipko Andolan, was a forest conservation movement in India. It began in 1970s in Uttarakhand, then a part of Uttar Pradesh (at the foothills of Himalayas) and went on to become a rallying point for many future environmental movements all over the world.
Que- Who coined the slogan of Chipko Movement " Ecology is Permanent economy " .
a. Jawaharlal Nehru
b. Salim Ali
c. Sunderlal Bahuguna
d. Rachel Carson
Answer- Sunderlal Bahuguna
Explanation- Bahuguna is also known for coining the Chipko slogan 'ecology is permanent economy'.
Que- ________ is diffused into the ground by gravitational force.
a. Rain water
b. Ocean
c. River water
d. None of the above
Answer- Rain water
Explanation- Rain water is diffused into the ground by gravitational force.