Tag: evs

Questions Related to evs

In 1900, the forest cover of the world comprised

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. 2500 million ha

  2. 7000 million ha

  3. 5500 million ha

  4. 1700 million ha

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Correct Option: B
Explanation:

In 1900, the forest cover of the world comprised about 7000 million hectors. In 2000, the forest cover of the world comprised only about 2370 million hector’s. It indicates that more than 50% of the tropical forests were converted into agricultural land.

Thus, the correct answer is '7000 million ha.'

To some extent viability of pollen grains depends on prevailing temperature and humidity.

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. True

  2. False

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Correct Option: A
Explanation:
  • The period for which pollen grains remain viable is highly variable and to some extent depends on the prevailing temperature and humidity. 
  • The pistil is developed and ovules reach maturity before the pollen grains are ripe. Hybrid seed production as soon as tomato hybrid cultivars gained popularity, ordinary conditions of storage pollen viability can hardly be retained.

The percentage of water vapor present in the air compared to that required for saturation is the:

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. Mixing ratio

  2. Absolute humidity

  3. Dew point

  4. Relative humidity

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Correct Option: D

Our seasons are caused by:

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. The changing distance between the earth and the sun

  2. The angle at which sunlight reaches the earth

  3. The length of the daylight hours

  4. Only (b) and (c) are correct

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Correct Option: D

Which statement(s) below is/are correct?

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. Valleys are more susceptible to radiation fog than hill tops

  2. Without the summer fog along the coast of California, redwoods would not grow well there

  3. Fog can be composed of ice crystals

  4. All of the above are correct

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Correct Option: D

If very cold air is brought indoors and warmed with no change in its moisture content, the saturation vapor pressure of this air will __________ and the relative humidity of this air will ___________ .

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. Increase, increase

  2. Decrease, decrease

  3. Increase, decrease

  4. Decrease, increase

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Correct Option: C

At what time of day is the relative humidity normally at a minimum?

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. When the air temperature is highest

  2. Just before sunrise

  3. About midnight

  4. When the air temperature is lowest

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Correct Option: A

The instrument that measures temperature, pressure, and humidity at various altitudes in the atmosphere:

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. Barograph

  2. Radiosonde

  3. Aneroid barometer

  4. Altimeter

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Correct Option: B

When clouds are viewed near the horizon, the individual cloud elements usually:

evs weather, climate and adaptations of animals to climate weather, climate and adaptation of animals to different climates climate and weather atmosphere and its components

  1. Appear closer together than is actually the case

  2. Appear farther apart than is actually the case

  3. Appear lighter in color than is actually the case

  4. Appear to have more vertical development than is actually the case

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Correct Option: A

Forest department has been able to maintain biodiversity by growing Pine, Teak and Eucalptus on large tracts.

evs forests and life forest - the dwelling place of animals forest and its importance introduction to forests conservation of forest and wildlife wildlife

  1. True

  2. False

  3. Nither

  4. Either

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Correct Option: B