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Ecosystem

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

Previous Year Papers

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Class 10 Class 12

The biomass available for consumption by the herbivores the decomposers is called

  • net primary productivity

  • secondary productivity

  • standing crop

  • gross primary productivity


A.

net primary productivity

Net Primary productivity (NPP) is the weight of organic matter stored by producers in a unit area/ volume per unit time.NPP is equal to the rate of organic matter created by photosynthesis minus the rate of respiration and other loses. Stored biomass is transferred from one trophic level to another trophic level. Secondary productivity is the rate of energy storage at consumers levels-herbivores, carnivorous and decomposers. 

Gross Primary productivity (GPP) is referred as total rate of photosynthesis including the organic matter used up in respiration during the measurement period.

Net Primary productivity (NPP) is the weight of organic matter stored by producers in a unit area/ volume per unit time.NPP is equal to the rate of organic matter created by photosynthesis minus the rate of respiration and other loses. Stored biomass is transferred from one trophic level to another trophic level. Secondary productivity is the rate of energy storage at consumers levels-herbivores, carnivorous and decomposers. 

Gross Primary productivity (GPP) is referred as total rate of photosynthesis including the organic matter used up in respiration during the measurement period.

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The animals that feed on plants are called :
  • Producers 
  • Carnivores
  • Insectivores
  • Herbivores

D.

Herbivores
1246 Views . 11 Shares

What trophic level is occupied by the Phytoplankton in an ecosystem ?
  • First
  • Second
  • Third
  • Fourth

A.

First
826 Views . 8 Shares

The green plants in the ecosystem-terminology are called :
  • Producers
  • Consumers
  • Herbivores
  • Carnivores

A.

Producers
1951 Views . 7 Shares

What trophic level is occupied by the birds in an ecosystem ?
  • First
  • Second
  • Third
  • Fourth

C.

Third
972 Views . 11 Shares

Cockroaches can feed both on plant and animal food, they are called :
  • Herbivores
  • Carnivores
  • Omnivores
  • None of the above

C.

Omnivores
1073 Views . 9 Shares

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