One direct use of earthworms to farmers is:

The given figure shows the nephridial system of an earthworm. Identify the endonephric nephridia from the labels $A$,$B$,and $C$.

Which of the following animal's sensory system does not have eyes but does possess light and touch sensitive organs (receptor cells) to distinguish the light intensities and to feel the vibrations in the ground?

Select the incorrect option for the earthworm $(Pheretima)$.

The blood of an earthworm is:

Which of the following types of nephridia are not found in earthworms?