Question

information about earthworm

Answer 1

Earthworm

"The Earthworm" and "Nightcrawlers" redirect here. For other uses, see Earthworm (disambiguation) and Nightcrawlers (disambiguation).

An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They 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. It has a double transport system composed of coelomic fluid that moves within the fluid-filled coelom and a simple, closed blood circulatory system. It has a central and a peripheral nervous system. The central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve cord running back along its length to motor neurons and sensory cells in each segment. Large numbers of chemoreceptors are concentrated near its mouth. Circumferential and longitudinal muscles on the periphery of each segment enable the worm to move. Similar sets of muscles line the gut, and their actions move the digesting food toward the worm's anus.[2]

Earthworms



An earthworm with a well-developed clitellum.

Scientific classification

Kingdom:

Animalia

Phylum:

Annelida

Class:

Clitellata

Subclass:

Oligochaeta (but disputed, see taxonomy) or Haplotaxida

Order:

Megadrilacea

Suborder:

Lumbricina + Moniligastrida

Answer 2

$\huge\text{\underline{\underline{Earthworm:}}}$


⚫The skin of earthworm is brown due to the presence of porphyrin pigment and protects and the earthworm from UV radiations.


⚫Earthworms are known by several names such as:

=> $\text{Night\:crawlers}$

=> $\text{Rain\:worms}$

=> $\text{Fishing\:worms}$


$\text{\underline{\underline {1.\:Night\:crawlers:}}}$


⚫As they come out of their burrows only at night for feed and to breed etc.


$\text{\underline{\underline{2.\:Rain\:worms:}}}$


⚫They leave the burrows at day time if the burrows are flooded with rain.

⚫So, they appear on ground surface after rain.


$\text{\underline{\underline{3.\:Fishing\:worms:}}}$


⚫They are also used as fish bait, so known as fishing worms.

⚫They are known as "fussorial animals" because they live in self-made burrows.


$\text{\underline{NOTE:}}$

Some tribals use earthworms for curing bladder stones, jaundice, piles, diarrhoea etc.