Tag: the earth and its living world

Questions Related to the earth and its living world

Primordial soup is the name of :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Rainy season ponds

  2. Hot solute rich early sea

  3. Hot molten surface of early earth

  4. Lava rich part of early earth

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Correct Option: B

The first cell like structure appeared in :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Air

  2. Mountains

  3. Ocean

  4. Soil

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Correct Option: C

Atmospheric layer protective to living beings from harmful rays is :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Mesosophere

  2. Ozonosphere

  3. Thermosphere

  4. Both B and C

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Correct Option: D

Microspheres resemble living beings in their ability to :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Assimilate chemicals

  2. Grow

  3. Divide

  4. All the above

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Correct Option: D

Methane of primary atmosphere disappeared in secondary atmosphere because of :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Consumption in formation of carbohydrates

  2. Consumption in formation of various types of organic compounds

  3. Escaping in space

  4. Oxidation to $CO _2$

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Correct Option: D

Asthenosphere lies at a depth of

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. 70 km

  2. 70 - 100 km

  3. 70 - 150 km

  4. 70 - 280 km.

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Correct Option: D

Asthenosphere is

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Part of mantle

  2. Part of crust

  3. Part of core

  4. Discontinuity between crust and mantle.

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Correct Option: A

Ionosphere is between :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Stratosphere and mesosphere

  2. Mesosphere and thermosphere

  3. Troposphere and stratosphere

  4. Troposphere and Thermosphere

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Correct Option: B

Primitive atmosphere of earth contained water vapours, hydrogen, ammonia and :

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. $CO _2$

  2. $O _2$

  3. $N _2$

  4. Methane

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Correct Option: D

Ionosphere occurs in

evs - i the earth and its living world introduction to the spheres of the earth origin of universe introduction to natural resources

  1. Thermosphere

  2. Homosphere

  3. Mesosphere

  4. Stratosphere

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Correct Option: A
Explanation:

The ionosphere is not another atmospheric layer. It occupies the same region of the upper atmosphere as the thermosphere. In this region of the atmosphere the Sun's energy is so strong that it breaks apart molecules and atoms of air, leaving ions. So the correct answer is 'Thermosphere'.