Q16 of 525 Page 236

In which group of animals, coelom is filled with blood?

In arthropods, open circulatory system is present and so the coelomic cavity is filled with blood.

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Which among the following is exclusively marine?

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Elephantiasis is caused by

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Which among the following have open circulatory system?

(i) Arthropoda


(ii) Mollusca


(iii) Annelida


(iv) Coelenterata

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Which of the following is not a criterion for classification of living organisms?