Knowledge in Animal cell biology
Zoology question paper
Paper on animal cell biotechnology
prachi jain
Earthworm
An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They have a world-wide distribution and are commonly found living in soil, feeding on live and dead organic matter. An earthworm's digestive system runs through the length of its body. It conducts respiration through its skin.
Arun Thomas