Identify the likely organisms $(1), (2), (3)$ and $(4)$ in the food web shown below.
$(a)$-Deer,$(b)$-Rabbit,$(c)$-Frog,$(d)$-Rat
$(a)$-Dog,$(b)$-Squirrel,$(c)$-Bat,$(d)$-Deer
$(a)$-Rat,$(b)$-Dog,$(c)$-Tortoise,$(d)$-Crow
$(a)$-Squirrel,$(b)$-Cat,$(c)$-Rat,$(d)$-Pigeon
Which one of the following is a correct food chain
Plants capture only.................percent of $PAR$
Food chain consists of
The aquatic organism that can actively swim at will against the water current is
In the following, there is no difference.