Ecosystem Questions

Mass of living matter at a trophic level in an area at any time is called:

Large Woody Vines are more commonly found in:

Which of the following would appear as the pioneer organisms on bare rocks?

Which one of the following is not used for construction of ecological pyramids ?

Which one of the following is a characteristic feature of cropland ecosystem?

A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called:

During ecological succession:

If $20\text{J}$ of energy is trapped at the producer level, then how much energy will be available to the peacock in the following food chain?$\text{plant}\to \text{mice}\to \text{snake}\to \text{peacock}$

In a terrestrial phosphorus cycle, what do the labels A, B, C, and D represent?

Identify the possible line “A” in the following food chain:Plant $\to$ insect $\to$ frog $\to$ “A” $\to$ Eagle

The rate of formation of new organic matter by rabbit in a grassland, is called:

The second stage of hydrosere is occupied by plants like:

Identify the likely organisms (a), (b), (c) and (d) in the food web shown below:

Which one of the following animals may occupy more than one trophic levels in the same ecosystem at the same time?

A renewable exhaustible natural resource is:

Which one of the following is one of the characteristics of a biological community?

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

Which two of the following statements concerning food chains are correct?(a) Removal of $80\%$ tigers results in increased vegetation growth.(b) Removal of most carnivores results in an increased deer population.(c) Food chains are generally limited to $3-4$ trophic levels due to energy loss.(d) Food chain length varies from $2$ to $8$ trophic levels.

The slow rate of decomposition of fallen logs in nature is primarily due to their:

About $70\%$ of total global carbon is found in:

Which of the following ecosystem types has the highest annual net primary productivity?