Tag: organisms and environment

Questions Related to organisms and environment

Which of the following is most ecologically relevant factor ?

biology living in harmony climate factors abiotic components organisms and environment

  1. Precipitation

  2. Temperature

  3. Soil

  4. Wind

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Correct Option: A
Explanation:
Precipitation is any form of a liquid or solid water particles that falls from the atmosphere and reach the surface of the earth. Its effect deflect the temperature, wind and humidity. 
So the correct answer is 'Precipitation'.

Read the following statements and choose the correct set of option w.r.t. ecosystem.
I. Various ecosystem are interconnected by flow of energy and transfer of materials.
II. It is self sustained and self regulated segment of nature.
III. Energy flow is always cyclic while flow of nutrients is unidirectional.
IV. Density of ecosystem is governed by degree of biogeochemical cycling and the amount of nutrients.

biology living in harmony climate factors abiotic components organisms and environment

  1. I, II and IV are correct

  2. I, II and III are correct

  3. Only III is are correct

  4. III and IV are correct

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Correct Option: A

Identify which is not correct?

biology living in harmony climate factors abiotic components organisms and environment

  1. Age of Universe -$20$ Billion years

  2. Age of Earth - $4.5$ Billion years

  3. Life appeared on earth - $500$ million years

  4. Both a & b

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Correct Option: A

The earth is tilted at an angle of $23.5^{o}$  with respect to the plane of its orbit around the sun. If the amount of tilt were increased to $40^{o}$, we would expect in middle latitudes:

biology living in harmony climate factors abiotic components organisms and environment

  1. Hotter summers and colder winters than at present

  2. Cooler summers and milder winters than at present

  3. Hotter summers and milder winters than at present

  4. Cooler summers and colder winters than at present

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Correct Option: A

In the stratosphere, the air temperature normally:

biology living in harmony climate factors abiotic components organisms and environment

  1. Decreases with increasing height

  2. Increases with increasing height

  3. Both increases and decreases depending on the season

  4. Cannot be measured

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Correct Option: B

Sunlight that bounces off a surface is said to be __________ from the surface.

biology living in harmony climate factors abiotic components organisms and environment

  1. Radiated

  2. Absorbed

  3. Emitted

  4. Reflected

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Correct Option: D

One third of sunlight striking earth and its atmosphere is reflected back to

biology living in harmony climate factors abiotic components organisms and environment

  1. Space

  2. Air

  3. Troposphere

  4. Stratosphere

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Correct Option: A

Sunlight passes through a thicker portion of the atmosphere at

biology living in harmony climate factors abiotic components organisms and environment

  1. Sunrise

  2. Noon

  3. Sunset

  4. Both a and c

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Correct Option: D

In which ecosystem sun is main source of energy?

biology living in harmony climate factors abiotic components organisms and environment

  1. Fuel power ecosystem

  2. Man subsidized solar power ecosystem

  3. Unsubsidized natural solar powered ecosystem

  4. Naturally subsidized solar powered ecosystem

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Correct Option: D

Mangroves and estuaries, less dependent on

biology living in harmony climate factors abiotic components organisms and environment

  1. Animals

  2. Sunlight

  3. Inorganic

  4. Organic factors

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Correct Option: B