Define a ecological pyramid. 

Define ecology.

Define ecological pyramids and describe with examples, pyramids of number and biomass.

Cite an example of an inverted ecological pyramid. What kind of pyramid of energy would it have ?

Who introduced the concept of ecological Pyramids? Write the other name of ecological Pyramids.

The concept of ecological pyramids was introduced by

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

Which one of the following regarding ecological pyramid is not correct ?

Study the following statements and select the incorrect ones. (i) Pyramids of energy and yearly biomass production can never be inverted, since this would violate the laws of thermodynamics. (ii) Pyramids of standing crop and numbers can be inverted, since the number of organisms at a time does not indicate the amount of energy flowing through the system. (iii) There are certain limitations of ecological pyramids such as they do not take into account the same species belonging to two or more trophic levels. (iv) Saprohytes are not given any place in ecological pyramids even though they play a vital role in the ecosystem.