Tag: evs

Quizzes (439) Questions (4580)

Questions Related to evs

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

In 1900, the forest cover of the world comprised

  1. 2500 million ha

  2. 7000 million ha

  3. 5500 million ha

  4. 1700 million ha
Reveal answer Fill a bubble to check yourself
B Correct answer
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.'

Multiple choice 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

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

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
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.
Multiple choice 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

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

  1. Mixing ratio

  2. Absolute humidity

  3. Dew point

  4. Relative humidity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Relative humidity is defined as the ratio of the actual amount of water vapor in the air to the maximum amount the air could hold at that temperature, expressed as a percentage.

Multiple choice 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

Our seasons are caused by:

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Seasons are primarily caused by the tilt of the Earth's axis, which changes the angle of sunlight and the duration of daylight throughout the year as the Earth orbits the Sun.

Multiple choice 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

Which statement(s) below is/are correct?

  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
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All listed statements are correct: cold air drains into valleys (radiation fog), coastal fog provides essential moisture for redwoods, and ice fog occurs in extremely cold conditions.

Multiple choice 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

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 ___________ .

  1. Increase, increase

  2. Decrease, decrease

  3. Increase, decrease

  4. Decrease, increase
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Warming air increases its capacity to hold water vapor (saturation vapor pressure increases). If the actual moisture content remains constant, the ratio of actual to saturation vapor pressure (relative humidity) decreases.

Multiple choice 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

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

  1. When the air temperature is highest

  2. Just before sunrise

  3. About midnight

  4. When the air temperature is lowest
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Relative humidity is inversely related to temperature. When the temperature is at its daily maximum, the air's capacity to hold water is highest, resulting in the lowest relative humidity.

Multiple choice 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

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

  1. Barograph

  2. Radiosonde

  3. Aneroid barometer

  4. Altimeter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A radiosonde is a weather instrument carried by a balloon that measures and transmits vertical profiles of temperature, pressure, and humidity as it ascends through the atmosphere.

Multiple choice 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

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

  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
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to perspective, objects near the horizon appear compressed. Cloud elements at a distance appear to be closer together than they actually are because of the viewing angle.

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

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

  1. True

  2. False

  3. Nither

  4. Either
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Monoculture plantations (growing only one species like Pine or Eucalyptus) generally reduce biodiversity compared to natural, diverse forest ecosystems.