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Segmentation

Segmentation ...

Question

Segmentation in the body is first observed in which of the following:
(a) Platyhelminthes (b) Aschelminthes (c) Annelida (d) Arthropoda

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Solution

The body segmentation first appeared in the phylum, Annelida (annulus meaning little ring). Platyhelminthes and Aschelminthes do not undergo segmentation.

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Q. Segmentation in the body is first observed in which of the following?
(a) Platyhelminthes

(b) Aschelminthes

Q. Which one belongs to (a) Platyhelminthes (b) Arthropoda (c) Annelida?

Q. Match the following concerning their taxonomic classification.

A) Aschelminthes	i. Locusta
B) Annelida	ii. Hirudinaria
C) Platyhelminthes	iii. Ancylostoma
D) Arthropoda	iv. Fasciola

Q. Expandable mollusca Arthropoda Annelida nematoda Platyhelminthes

Q. Which among the following are incorrectly matched?

Animal	Characteristic	Taxon
A. Crabs	Nephridia	Arthropoda
B. Earthworm	Metamerism	Annelida
C. Spiders	Jointed appendages	Arthropoda
D. Nereis	Parapodia	Annelida

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