Why is the rate of assimilation of energy at the herbivore level called secondary productivity ?
Integration rate of energy done at level of habivores is called secondary productivity because the following trophic level consumers the biomass for nutrition which is received from primary productivity obtained by autotrophs.
The number of trophic levels in an ecosystem are limited. Comment.
Which of the following in an ecosystem exhibits one-way flow rather than cyclic flow
In what order do a hawk, grass and rabbit form a food chain in a meadow?
Trees $\rightarrow$ Birds $\rightarrow$ Lice $\rightarrow$ Bacteria. Thus food chain is
Name any two organisms which can occupy more than one trophic level in an ecosystem.