Ecosystem- Quiz 5

Which of the following statement about GFC is incorrect?

• Sun is the source of energy

• Begins with consumers

• Major conduct for energy flow in aquatic ecosystems

• Size of organisms commonly increase at higher trophic levels

Amount of living material present in different trophic levels at a given time is called

• Standing quality

• Standing state

• GPP

• Standing crop

Succession stages that occur on rock is called

• Hydrarch

• Halosere

• Lithosere

• Hydrosere

What amount of carbon is fixed in the biosphere through photosynthesis annually?

• 4 x 10¹³ g

• 3 x 10⁴ kg

• 10⁴ kg

• 4 x 10¹³ kg

Phosphorus is major component of

• Biological membranes

• Nucleic acids

• Cellular energy transfer system

• All of these

Which of the following organisms, were not given any place in ecological pyramid?

• Working at several trophic levels.

• Decomposer

• Parasites

• More than one option is correct

According to Robert Constanza average price tag for ecosystem services is

• US $ 33 trillion

• US $ 18 trillion

• US $ 180 trillion

• US $ 13 trillion

Choose odd one out w.r.t. gaseous cycle.

• Carbon

• Hydrogen

• Nitrogen

• Phosphorus

Raw material for decomposition represented by dead organic matter is

• Detritus

• Only roots

• Minerals

• Humus

Mineralisation is performed by

• Small carnivores

• Detrivores

• saprophytic bacteria and fungi

• Earthworm, termites