Que- Which of the following has the least similarity when comparing two examples of the same biome located in different parts of the world?
a. Climate
b. Latitude
c. Continent
d. Elevation
Answer- Continent
Explanation- Continent has the least similarity when comparing two examples of the same biome located in different parts of the world.
Que- On a clear, calm, night, the ground and air above cool mainly by this process:
a. Evaporation
b. Reflection
c. Convection
d. Radiation
Answer- Radiation
Explanation- On a clear, calm, night, the ground and air above cool mainly by this process radiation.
Que- What is desertification?
a. Conversion of forests into desert
b. Conversion of croplands into desert
c. Conversion of grassland into desert
d. all of the above
Answer- all of the above
Explanation- all of the above
Que- A great deal of indoor air pollution comes from
a. sludge
b. carbon monoxide
c. cooking
d. carpets and furniture
Answer- carpets and furniture
Explanation- A great deal of indoor air pollution comes from carpets and furniture.
Que- The average temperature of the earth is about __________ degree F.
a. 57
b. 59
c. 67
d. 65
Answer- 59
Explanation- GISS data show global average temperatures in 2017 rose 1.62 degrees Fahrenheit (0.9 degrees Celsius) above the 1951-1980 mean. According to GISS, the global mean surface air temperature for that period was estimated to be 57 F (14 C). That would put the planet's average surface temperature in 2017 at 58.62 F (14.9 C).
Que- Hippocrates mentioned air pollution in __________ BC.
a. 400
b. 500
c. 620
d. 354
Answer- 400
Explanation- Hippocrates mentioned air pollution in 400 BC.
Que- Which of the following is the major cause of pollution?
a. plants
b. man
c. fungi
d. hydrocarbon gases
Answer- hydrocarbon gases
Explanation- Hydrocarbon gases is the major cause of pollution.
Que- Which of the following would be considered to be a biotic component of an environment?
a. Fire
b. Water
c. Fungi
d. Soil
Answer- Fungi
Explanation- Biotic components are the living things that shape an ecosystem. Examples of biotic components include animals, plants, fungi, and bacteria. Abiotic components are non-living components that influence an ecosystem. Examples of abiotic factors are temperature, air currents, water, and minerals.
Que- Bears are usually hunted and killed for their
a. Teeth
b. Skin
c. Gall bladder
d. Nails
Answer- Skin
Explanation- Bears are usually hunted and killed for their skin.
Que- All the genes of a population is called
a. gene pool
b. genome
c. gene bunch
d. gene population
Answer- gene pool
Explanation- The Collective Set of Alleles in a Population Is Its Gene Pool. The fact that genes exist in alternate forms, called alleles, forms the basis for the study of population genetics. Populations are made up of members of the same species that interbreed.
Que- Viable material of endangered species can be preserved by
a. Gene bank
b. Gene library
c. Gene pool
d. Herbarium
Answer- Gene bank
Explanation- Viable material of endangered species can be preserved by gene bank. Gene bank is an institute that maintains stocks of viable seeds (seed banks), live growing plants (orchards), tissue culture and frozen germplasm with the whole range of genetic variability.
Que- The horizontal extent of the ozone hole can sometimes exceed the size of the Antarctic continent.
a. True
b. False
c. Nothing can be said
d. None of the mentioned
Answer- True
Explanation- No explanation is given for this question
Que- Heat waves are generally considered to be little more than a nuisance and are not responsible for considerable loss of life.
a. True
b. False
c. Nothing can be said
d. None of the mentioned
Answer- False
Explanation- No explanation is given for this question
Que- Fog is a major hazard to aviation.
a. True
b. False
c. Nothing can be said
d. None of the mentioned
Answer- True
Explanation- No explanation is given for this question
Que- Suppose two unsaturated air masses mix horizontally. The resulting mixture cannot possibly be saturated.
a. True
b. False
c. Nothing can be said
d. None of the mentioned
Answer- False
Explanation- No explanation is given for this question
Que- Carbon dioxide is a naturally-occurring component of the atmosphere.
a. True
b. False
c. Nothing can be said
d. None of the mentioned
Answer- True
Explanation- No explanation is given for this question
Que- What is the official name of IUCN?
a. World Wide Fund for Nature
b. International Union for Conservation of Nature and Natural Resources
c. United Nations Environment Programme
d. United Nations Educational, Scientific and Cultural Organization
Answer- International Union for Conservation of Nature and Natural Resources
Explanation- The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources.
Que- What is the most important factor for the success of animal population?
a. Natality
b. Adaptability
c. Unlimited food
d. Inter species activity
Answer- Adaptability
Explanation- The process by which a species becomes fit to its survival in the environment is called adaptability. When the environmental factors change the organism has to adapt to its surrounding by changing its temperature or metabolism over a period of time, Hence adaptability is the result of natural selection.
Que- _________ is the element used to produce nuclear energy
a. Palladium
b. Strontium
c. Uranium
d. Rhodium
Answer- Uranium
Explanation- Uranium is the fuel most widely used to produce nuclear energy. That's because uranium atoms split apart relatively easily. Uranium is also a very common element, found in rocks all over the world.
Que- Carbon dioxide is called greenhouse gas because it is
a. Transparent to sunlight but traps heat
b. Transparent to heat but traps sunlight
c. Used in green-house to increase plant growth
d. Transparent to both sunlight and heat
Answer- Transparent to sunlight but traps heat
Explanation- Those gas molecules in the Earth's atmosphere with three or more atoms are called " greenhouse gases " because they can capture outgoing infrared energy from the Earth, thereby warming the planet. The greenhouse gases include water vapor with three atoms (H2O), ozone (O3), carbon dioxide (CO2), and methane (CH4).
Que- Which of the following enhances soil fertility?
a. Crop rotation
b. Improved methods of agriculture
c. Using new seed varieties
d. Irrigation
Answer- Crop rotation
Explanation- Crop rotation enhances soil fertility.
Que- Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35o F. The most likely reason for this apparent discrepancy is that:
a. Temperature readings are taken in instrument shelters more than 5 feet above the ground
b. The thermometer was in error
c. The newspaper reported the wrong temperature
d. The thermometer was read before the minimum temperature was reached for that day
Answer- Temperature readings are taken in instrument shelters more than 5 feet above the ground
Explanation- Temperature readings are taken in instrument shelters more than 5 feet above the ground.
Que- Definition of ecosystem is
a. The community of organisms together with the environment in which they live
b. The abiotic component of a habitat
c. The part of the earth and its atmosphere which inhibits living organisms
d. A community of organisms interacting with one another
Answer- The community of organisms together with the environment in which they live
Explanation- A biological community of interacting organisms and their physical environment.
Que- Which of the following regarding ecological pyramids is not correct?
a. In most ecosystems, the pyramid of numbers and biomass are up right
b. In tree dominated ecosystem the pyramid of numbers is inverted
c. The pyramid of energy expresses mainly the rate of food production
d. In deep water ecosystem, the pyramid of biomass is upright
Answer- In most ecosystems, the pyramid of numbers and biomass are up right
Explanation- In tree-dominated ecosystems, the pyramid of numbers is inverted because there are the maximum number of producers present as compared to the consumers. In deep water ecosystems, the pyramid of biomass is upright because there are more number of phytoplanktons, followed by small fishes and then large fishes.
Que- Which of the following statement is incorrect regarding ecological pyramids
a. The pyramid of energy is inverted in ocean ecosystem
b. The pyramid of biomass is inverted in aquatic ecosystem
c. The pyramid of numbers is upright in grass land ecosystem
d. The pyramid of biomass is upright in grass land ecosystem
Answer- The pyramid of energy is inverted in ocean ecosystem
Explanation- The pyramid of energy is inverted in ocean ecosystem this statement is incorrect regarding ecological pyramids.