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Explain about the terms - bursae and captacula?
Paired water-filled sac located at base of each arm of a brittle star. Cilia in bursae circulate water. Its surface is significant in gas in gas exchange. Gametes may also be released into the bursa.Specialized ciliated tentacles that scaphopod molluscs use for feeding. Food is trapped on sticky bulb at the tip of captaculum before being moved to mouth by cilia on the captacula.
Q. Do echinoderms have an excretory system? How is excretion done in these animals? Echinoderms do not have an excretory system their excretions are eliminated by diffusion.
#affinities of ctenophora with platyhelmintheson..
Explain Full Liquid Diet Full Liquid Diet: This diet provides foods and fluids that are liquid or semi liquid at room temperature. The type of food provided may vary dependi
economic importance of mulluscas
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