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

Question

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, ( a ) - ( iii ) , ( b ) - ( iv ) , ( c ) - ( i ) , ( d ) - ( ii ), ( a ) - ( ii ) , ( b ) - ( iii ) , ( c ) - ( iv ) , ( d ) - ( i ), ( a ) - ( iv ) , ( b ) - ( i ) , ( c ) - ( ii ) , ( d ) - ( iii ), ( a ) - ( i ) , ( b ) - ( ii ) , ( c ) - ( iii ) , ( d ) - ( iv )

MARKS App · Accepted Answer

Organisms Characteristics Platyhelminthes They are triploblastic, acoelomates having bilateral symmetry with the incomplete digestive system. Echinoderms Adults show pentaradial symmetry, while the embryonic show bilateral symmetry. The mode of embryonic development is indirect. Hemichordates They are triploblastic, coelomates having cylindrical bodies with no segmentation Aves Aves and mammals have a four-chambered heart, that prevents the mixing of oxygenated and deoxygenated blood and hence are warm-blooded. The mode of embryonic development is direct.

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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
Platyhelminthes	They are triploblastic, acoelomates having bilateral symmetry with the incomplete digestive system.
Echinoderms	Adults show pentaradial symmetry, while the embryonic show bilateral symmetry. The mode of embryonic development is indirect.
Hemichordates	They are triploblastic, coelomates having cylindrical bodies with no segmentation
Aves	Aves and mammals have a four-chambered heart, that prevents the mixing of oxygenated and deoxygenated blood and hence are warm-blooded. The mode of embryonic development is direct.