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## Previous Year Papers

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Class 10 Class 12

Of the total incident solar radiation, the proportion of PAR is

• less than 50%

• more than 80%

B.

less than 50%

PAR ( photosynthetically active radiation) designates the spectral range of solar radiation from 400 to 700 nm that photosynthetic organisms are able to use in the process of photosynthesis. Of the total incident solar radiation, the proportion of PAR is less than 50%.

PAR ( photosynthetically active radiation) designates the spectral range of solar radiation from 400 to 700 nm that photosynthetic organisms are able to use in the process of photosynthesis. Of the total incident solar radiation, the proportion of PAR is less than 50%.

332 Views

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

A.

Producers
1951 Views

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

A.

First
826 Views

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

D.

Herbivores
1246 Views

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

C.

Third
972 Views

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

C.

Omnivores
1073 Views