Botany Ecosystem questions from NEET UG 2012.
Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels? 
Identify the likely organisms (I, II) (III) and (IV) in the food web shown below  
Identify the possible link A in the following food chain Green plant $\rightarrow$ Insect $\rightarrow$ Frog $\rightarrow$ A $\rightarrow$ 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
The upright pyramid of number is absent in
Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Which one of the following is not a functional unit of an ecosystem?