1. Gizzard
2. Oesophagus
3. Buccal chamber
4. Stomach
Gizzard
1. Fused pair of supra-pharyngeal ganglia
2. Fused pair of sub-pharyngeal ganglia
3. A pair of circum pharyngeal connectives
4. All of these
Fused pair of supra-pharyngeal ganglia
1. Compound
2. Simple
3. Endocrine
4. Exocrine
Compound
1. Single,hollow ventral cord
2. Double,solid ventral cord
3. Double,solid dorsal cord
4. Single,hollow dorsal cord
Double,solid ventral cord
1. Pre-typhlosolar region
2. Typhlosolar region
3. Post-typhlosolar region
4. Clitellar region
Pre-typhlosolar region
1. Annelida,oligochaeta
2. Annelida,polychatea
3. Arthropoda,insecta
4. Arthropoda,cephalopoda
Annelida,oligochaeta
1. Dark brown
2. Reddish brown
3. Black
4. Lighter
Dark brown
1. 1st to 4th segment
2. 2nd to 4th segment
3. 1st to middle of 3rd segment
4. 1st to middle of 5th segment
1st to middle of 3rd segment
1. Labrum
2. Mandible
3. Maxillae
4. Hypopharynx
Maxillae
1. Stomach
2. Gizzard
3. Oesophagus
4. Intestine
Gizzard