Tag: biology

Questions Related to biology

Inferior planets are :

origin of universe universe and organic evolution biology

  1. Farthest from Sun

  2. In orbits outside that of earth

  3. In orbits inner that of earth

  4. Gaseous planets

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Correct Option: C

The largest planet of solar system is :

origin of universe universe and organic evolution biology

  1. Pluto

  2. Earth

  3. Mercury

  4. Jupiter

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Correct Option: D

Lithosphere comprises :

origin of universe universe and organic evolution biology

  1. Pedosphere and outer crust.

  2. Outer crust and lower crust .

  3. Pedosphere, outer crust and lower crust.

  4. Crust and part of upper mantle.

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Correct Option: D

Concentration of ozone in troposphere is :

origin of universe universe and organic evolution biology

  1. 0.05 ppm

  2. 0.1 ppm

  3. 1.5 ppm

  4. 10.0 ppm

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Correct Option: A

Which was not present freely in the early atmosphere of the earth?

origin of universe universe and organic evolution biology

  1. Water

  2. Carbon monoxide

  3. Hydrogen

  4. Oxygen

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Correct Option: A

Thickness of lithosphere is

origin of universe universe and organic evolution biology

  1. 20 km

  2. 40 km

  3. 70 km

  4. 10 - 18 km.

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Correct Option: B

Lithosphere comprises

origin of universe universe and organic evolution biology

  1. Crust part of earth

  2. Crust and outer part of mantle

  3. 1-2 km thick cover of earth comprising rocks

  4. Outer 10-15 km thick crust of earth.

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Correct Option: C

Study of impact of extra-terrestrial environments on organisms belonging to earth is component of

origin of universe universe and organic evolution biology

  1. Ecology

  2. Cosmology

  3. Exobiology

  4. Ethnology.

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Correct Option: C

Archaeology and linguistics are constituents of

origin of universe universe and organic evolution biology

  1. Ethology

  2. Ethnology

  3. Anthropometry

  4. Anthropology.

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Correct Option: D

Assertion : Formation of new species is called speciation.

Reason : The deme has a common gene pool.

origin of universe universe and organic evolution biology

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

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Correct Option: B
Explanation:

The phenomenon of development of a new species from pre - existing one is called speciation. A species is a collection of demes. The deme is a groups of populations with a common gene pool.