Match the columns:
Column - $I$ | Column - $II$ |
$(a)$ Saprotrophs | $(i)$ He makes his food |
$(b)$ Omnivores | $(ii)$ Dependent on dead |
$(c)$ Autotrophs | $(iii)$ Eat other animals for food |
$(d)$ Vegetarian | $(iv)$ Fertilizers for plants |
The lentic ecosystem includes which of following water
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.
In an ecosystem, there is flow of energy at different trophic levels. This is as follows :
Flow of energy declines from low to higher trophic level in ecosystem, is mainly explained by
Which one of the following components of ecosystem comes from outside