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Earn 100

Closed type of circulatory system present in -
(a)Annelida and Arthropoda
(b)Arthropoda and Mollusca
(c)Annelida and Cephalopoda
(d)Mollusca and Echinodermata

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Important Questions on Animal Kingdom
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Pila, Pinctada, Asterias, Echinus, Antedon, Cucumaria, Brittle star, Octopus

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Identify and select the correct option

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(1) Digestive tract complete, straight or "U-shaped'.
(2) Worm like, unsegmented marine animals.
(3) Respiration by gills.
(4) Excretion by single proboscis gland.
(5) Open circulatory system.

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