A) Closed circulatory system
B) Segmentation
C) Pseudocoelom
D) Ventral nerve cord
Correct Answer: C
Solution :
| [c] Name of the phylum-Annelida was first coined by Lamarck. The body of annelids is elongated, bilaterally symmetrical, triploblastic, truely coelomate and metamerically segmented into similar metameres. The coelom is true, schizocoelous. |
| Blood vascular system is closed. The nervous system is with a pair of cerebral ganglia and a double ventral nerve cord bearing ganglia and lateral, nerves in each segment. |
| The blood vascular system consisting of blood vessels and capillaries. Blood is composed of fluid plasma and colourless corpuscles, physiologically comparable to the leucocytes of vertebrates. |
| Pseudocoelom is the body cavity of Aschelminthes. |
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