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Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
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Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
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  1. Which one of the following groups of animals is bilaterally symmetrical and triploblastic?
    1. Aschelminthes (round worms)
    2. Ctenophores
    3. Sponges
    4. Coelenterates (Cnidarians)
Correct Option: A

Aschelminthes is bilaterally symmetrical and triploblastic. These are mostly aquatic, free living or parasitic. Their body is three layered which is ectoderm, mesoderm and endoderm.


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