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

Succession stages that occur on rock is called

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

Phosphorus is major component of

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

According to Robert Constanza average price tag for ecosystem services is

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

Raw material for decomposition represented by dead organic matter is

Mineralisation is performed by

Which of the following organisms convert plant matter into animal matter?

The most common shape of pyramid of number is

Succession proceeds from

Pioneer community established on a bare rock is

Choose odd one out w.r.t. functional aspects of ecosystem

Humification results in the formation of _________ substance

In a grassland ecosystem, if the number of primary producers is approximately 6 million plants, the number of top carnivore (in million) which may ber supported by it may be

If CO₂ is removed totally from the biosphere, which organism will be affected first

The largest reservoir of phosphorus in the biosphere is the

The phosphorus cycle is unusual in that it is entirely

Which of the following atoms typically cycles within the most localized area?

Ecological succession is _______ and ________ change in species composition.

Which of the following kingdoms contains species that can fix nitrogen?

The most abundant element present in the plants is

A consumer whose carbon atoms have already passed through three species is a