Tag: ecosystem : structure and function

Questions Related to ecosystem : structure and function

Natural sources of sulfur dioxide involves:

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. Respiration

  2. Cement production

  3. PAN

  4. Volcanic eruptions

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Correct Option: D

Which statement is not correct?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. Humification is followed by mineralization

  2. Low temperature and anaeobiosis accelerate decomposition

  3. The decomposition is slow if the detritus is rich in lignin and chitin

  4. Humus is highly resistance to microbial action

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Correct Option: A

Which one of the following pairs is not correctly matched?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. Production of sulphur dioxide - Burning of coal

  2. Depletion of ozone layer - Release of chlorofluorocarbons in the atmosphere

  3. Eutrophication - Increase in nitrogen and phosphorus contents in aquatic bodies

  4. Dec:ease in B.O.D. of pond water - Increase in global temperature

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Correct Option: A

Which gas is known as rotten egg smell?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. $H _{2}S$

  2. $CO _{2}$

  3. $O _{2}$

  4. Argon

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Correct Option: A

Which gas is produced by reduction of sulphur?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. $CO$

  2. $CO _{2}$

  3. $H _{2}S$

  4. $Nox$

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Correct Option: C

One way cycle is

botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. $CO _{2}$ cycle

  2. $H _{2}O$ cycle

  3. Free energy cycle

  4. $O _{2}$ cycle

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Correct Option: C

The pyramid of energy is always upright for any ecosystem. This situation indicates the fact that?

botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. Producers have the lowest energy conversion efficiency

  2. Carnivores have a better energy conversion efficiency than herbivores

  3. Energy conversion efficiency is the same in all trophic levels

  4. Herbivores have a better energy conversion efficiency than carnivores

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Correct Option: A

How many types of energy source an ecosystem depends on?

botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. 3 types

  2. 4 types

  3. 2 types

  4. 5 types

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Correct Option: C

Organism in estuary can concentrate on conversion of sun energy into;

botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. Food

  2. Organic matters

  3. Nutrients

  4. Water

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Correct Option: B

According to first law, energy cannot be created nor destroyed, but, can only show a state known as

botany ecosystem : structure and function energy flow in food chain food chain and energy flow energy flow in ecosystem

  1. Utilized

  2. Thermodynamics

  3. Convection

  4. Conversion

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Correct Option: D