Question

anatomy of earthworm​

Answer 1

Answer:

Earth worm

Explanation:

Earthworms have a tube-like arrangement or cylindrical shaped and reddish-brown segmented body. The body is divided into small segments. The dorsal side is characterized by a dark line of blood vessels and the ventral side is characterized by the genital openings.

Answer 2

Explanation:

The anatomy of Earth is in the following ways:-

1. The body wall of the earthworm is covered externally by the epidermis, two muscle layers which are circular and longitudinal respectively and an innermost coelomic epithelium.
2. Single layer of columnar epithelial cells present in epidermis contain secretory gland cells.
3. The alimentary canal is a straight tube and runs between first to last segment of the body.
4. A terminal mouth opens into the buccal cavity (1-3 segments) which leads into muscular pharynx.
5. A small narrow tube, oesophagus (5-7 segments), continues into a muscular gizzard (8-9 segments), helps in grinding the soil particles and decaying leaves, etc.
6. The stomach extends from 9-14 segments.