Body does not show any segmentation in [CPMT 1981]
A) Frog
B) Cockroach
C) Earthworm
D) Star Fish/Hydra
Answers
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Answer:D
Explanation: segmentation occurs in annelida, arthropoda, hemichordata and chordata
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Answer:
The correct answer is D) Star Fish/Hydra
Explanation:
Body segmentation means repeating of units along the anterior-posterior axis of the body.
- Star Fish/ Hydra belongs to phylum Echinodermata.They lack body segmentation and have only radially symmetrical body.
- Frogs are amphibians belonging to Phylum Chordata. Their body is segmented by the formation of somites.
- Cockroaches belong to Phylum Arthropoda. They have serially segmented body segments with a pair of appendages on each segments.
- Earthworm belongs to Phylum Annelida. Their body is segmented by transverse rings or annulations.
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