Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?
Phytoplankton
Fish
Zooplankton
Frog
Assertion : A network of food chains existing together in an ecosystem is known as food web.
Reason : An animal like kite cannot be a part of a food web.
Given food web contains some missing organisms $A, B, C$ and $D$. Identify these organisms and select the correct answer
The trophic level of mushroom and Monotropa is
Food and energy relationships among living components of ecosystem is generally referred as
The amount of organic matter stored by green plants in a unit time and area is called