CLASSIFICATION
NINE COMMON ANIMAL PHYLA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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echinodermata
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chordata
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arthropoda
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mollusca
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Detailed explanation-1: -Complete answer: The water vascular system is found in the phylum Echinodermata. The water vascular system is a hydraulic system that is used for locomotion, respiration, and food and waste transportation. It has canals which are connected to numerous tube feet to push the organisms against the ground.
Detailed explanation-2: -An echinoderm moves by using many tube feet. Tube feet are small, delicate projections attached along the side of a water-filled tube called a radial canal. Figure 3.85 shows some examples of echinoderm tube feet.
Detailed explanation-3: -In echinoderms such as sea stars, every arm bears two rows of tube feet on the oral side which help in attachment to the substratum. These animals possess a true coelom that is modified into a unique circulatory system called a water vascular system.
Detailed explanation-4: -Water vascular system is a unique characteristic of echinoderms. It helps in locomotion, the capture of food and respiration. Q.
Detailed explanation-5: -Tubefeet are the locomotory organs found in sea urchin and sea-star, which belong to phylum Echinodermata.