Non-biodegradable pollutants are created by
A. nature
B. excessive use of resources
C. humans
D. natural disasters
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Respiratory roots are known as
A. velamen
B. pneumatophores
C. hydathodes
D. prop roots
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The conversion of a pond to a climax forest community is an example of
A. xerarch succession
B. mesarch succession
C. hydrarch succession
D. all of these
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Which of the following is a nonrenewable energy resource?
A. Solar
B. Methane
C. Hydroelectric
D. Coal
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What type of energy is derived from heated groundwater?
A. solar
B. geothermal
C. hydroelectric
D. nuclear
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All of the following are advantages of dams except
A. flood control
B. recreation
C. hydroelectric power
D. enhancing natural spawning patterns of fish
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The combustion of waste in the absence of Oxygen is called
A. Haemolysis
B. Pyrolysis
C. Hydrolysis
D. None
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Atmospheric humidity is measured by
A. Auxanometer
B. Photometer
C. Hygrometer
D. none
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Freshwater protozoans react to a/an __________ environment by removing water through _______
A. hypotonic, turgor pressure
B. isotonic, a contractile vacuole
C. hypertonic, a contractile vacuole
D. hypotonic, a contractile vacuole
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Which of the following is the poorest conductor of heat?
A. Still air
B. Water
C. Ice
D. Snow
E. Soil
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The first national park of Kerala
A. Aralam
B. Kottayam
C. Idukki
D. Iravikulam
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Agastyamalai Biosphere reserve is in
A. Pathanamthitta
B. Thiruvananthapuram
C. Idukki
D. Wayanad
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Mullaperiyar dam is in the district?
A. Thrissur
B. Pathanamthitta
C. Idukki
D. Alappuzha
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Mulching helps in
A. soil fertility
B. moisture conservation
C. improvements soil structure
D. soil sterility
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In most areas, the warmest time of the day about 5 feet above the ground occurs:
A. Around noon
B. In the afternoon between 3 and 5 PM
C. In the early evening after 6 PM
D. Just before the sun sets
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An ideal shelter for housing a temperature-measurement instrument should be:
A. White
B. Black
C. In the shade
D. Both white and in the shade
E. Both black and in the shade
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Air pollution is likely to be most severe
A. in the interior of continents
B. near the center of an anticyclone
C. in the summer
D. when the atmosphere is turbulent
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In meteorology, the word insolation refers to:
A. A well-constructed, energy-efficient home
B. The solar constant
C. Incoming solar radiation
D. An increase in solar output
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In ecological succession from pioneer to climax community, the biomass shall
A. decrease
B. no relation
C. increase and then decrease
D. increase continuously
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Suppose it is a winter night and at about 11 p.m., the air cools to the dew-point temperature and a thick radiation fog develops. If the air continues to cool during the night, in 5 hours the dew point temperature will probably:
A. Decrease as the air becomes drier
B. Decrease as the air becomes moister
C. Increase as the air becomes drier
D. Increase as the air becomes moister
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