(A) In both phylum Echinodermata and phylum Chordata,the development of the embryo follows the deuterostome pattern. In deuterostomes,the blastopore (

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Mouth arises some distance away from blastopore (Deuterostomial)

(A) In both phylum Echinodermata and phylum Chordata,the development of the embryo follows the deuterostome pattern. In deuterostomes,the blastopore (the first opening formed during gastrulation) develops into the anus,while the mouth is formed later at a different location. This is a key evolutionary characteristic shared by these two groups.

Class 11 Biology Animal Kingdom Mix Examples - Animal Kingdom

Medium

Which character is common in phylum Echinodermata and Chordata?

A
Mouth arises some distance away from blastopore (Deuterostomial)
B
Mouth arises from blastopore or anterior margin of blastopore (Protostomial)
C
Presence of pharyngeal gill slits
D
Presence of notochord

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Animal Kingdom

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Mix Examples - Animal Kingdom

Match the following group of organisms with their respective distinctive characteristics and select the correct option:

Organisms Characteristics

$(a)$ Platyhelminthes $(i)$ Cylindrical body with no segmentation

$(b)$ Echinoderms $(ii)$ Warm-blooded animals with direct development

$(c)$ Hemichordates $(iii)$ Bilateral symmetry with incomplete digestive system

$(d)$ Aves $(iv)$ Radial symmetry with indirect development

Organisms	Characteristics
$(a)$ Platyhelminthes	$(i)$ Cylindrical body with no segmentation
$(b)$ Echinoderms	$(ii)$ Warm-blooded animals with direct development
$(c)$ Hemichordates	$(iii)$ Bilateral symmetry with incomplete digestive system
$(d)$ Aves	$(iv)$ Radial symmetry with indirect development