Water vascular system is found in
The water vascular system is a hydraulic system used by echinoderms, such as sea stars and sea urchins. It plays an important role in the locomotion, food and waste transportation, and respiration. The system is composed of canals connecting numerous tube feet. They move by alternately contracting muscles that force water into the tube feet, causing them to extend and push against the ground, then relaxing to allow the feet to retract.
Starfish or sea stars are star-shaped echinoderms belonging to the class Asteroidea. Hence, option D is correct.
Match the animal names listed under column I with the zoological names given under column II and select the correct option from the given codes. Column I (Common name) Column II (Zoological name) A. Starfish (i) Sepia B. Jellyfish (ii) Asterias C. Devilfish (iii) Aurelia D. Cuttlefish (iv) Octopus (v) Hippocampus
Match the column A with column B and choose the correct option. Column A Column B A. Porifera i. Canal system B. Aschelminthes ii. Water-vascular system C. Annelida iii. Muscular pharynx D. Arthropoda iv. Jointed appendages E. Echinodermata v. Metameres
Open circulatory system is present in (i)______ and (ii)______.
Hard calcium carbonate structures are used as a skeleton by: A. Echinodermata B. protochordata C. Arthopoda D. Nematoda
Which of the following organisms has the water vascular system as a distinctive feature?
Match the column A with column B and choose the correct option. Column A Column B A. Porifera i. Canal system B. Aschelminthes ii. Water-vascular system C. Annelida iii. Muscular pharynx D. Arthropoda iv. Jointed appendages E. Echinodermata v. Metameres
Locomotory organs of echinoderms are:
Aristotle's lantern is found in