Question

Choose the correct combination of labelling from the given options:

• A. A- Mouth, B-Peristomium, C-Segment, D- Posterior, E-Anterior, F-Clitellum, G- Anus
• B. A- Peristomium, B-Mouth, C-Segment, D- Posterior, E-Anterior, F-Anus, G- Clitellum
• C. A- Peristomium, B-Mouth, C-Anterior, D- Clitellum, E-Segment, F-Anus, G-Posterior
• D. A- Peristomium, B-Mouth, C-Clitellum, D- Anterior, E-Segment, F-Anus, G-Posterior

Answer 1

The correct option is C A- Peristomium, B-Mouth, C-Anterior, D- Clitellum, E-Segment, F-Anus, G-Posterior

Mouth: it is the terminal opening present in the first body segment of earthworm.
Peristomium: the first body segment of the earthworms is called peristomium.
Anterior: part of the body that lies towards mouth.
Posterior: part of the body that lies towards anus.
Segment: the body of earthworm is divided into various segments. There are around 100- 150 segments in an earthworm.
Clitellum: segment 14 to 16 in earthworm possess a thick band called clitellum. It has glands that secrete mucus and albumin. It helps in the formation of cocoon.