Which of the following organisms has the water vascular system as a distinctive feature?
Phylum Echinodermata includes spiny skinned animals. Phylum Echinodermata shows following characters:
1) The body cavity is true enterocoeles coelom. Coelom is divided into tubules and sinuses by ciliated peritoneum to form water vascular, haemal and peri haemal system.
2) Water vascular system is supported by tube feet which not only help in locomotion but support ingestion and respiration.
Thus option A is the correct answer.
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
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
Water vascular system is found in
Locomotory organs of echinoderms are:
Aristotle's lantern is found in