CBSE Class 9 Answered
(a) What is coelom?State its significance.
(b) Pick out the organisms that have a pseudocoelom from the following: earthworm, pinworm, tape-worm and roundworm.
(c) What is peculiar about the coelom of Arthropods? What is such a condition called? Explain.
(d) To which phylum of Animalia do the following animals belong to: octopus, pila, chiton and unio? Comment on their coelom.
Asked by Topperlearning User | 29 Apr, 2016, 09:03: AM
Expert Answer
(a) Coelom is body cavity. The well developed organs of the body can be accommodated into it.
(b) Pinworms and round worms.
(c) In Arthropods, the coelomic cavity is filled with blood. Such a condition is called haemocoel.
(d) Mollusca;
Body cavity is haemocoel. True coelom is reduced and restricted to the pericardial cavity and the lumen of the gonads and nephridia.
Answered by | 29 Apr, 2016, 11:03: AM
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