Open circulatory system is present in (i)______ and (ii)______.
Arthropods and Molluscs havean open circulatory system, where blood fills the body cavity called the haemocoel and the blood comes in direct contact with the organs/tissues. The blood is referred to as the haemolymph.
So, the correct answer is "(i)- Arthropods ii)- Molluscs."
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
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
Water vascular system is found in
Locomotory organs of echinoderms are:
Aristotle's lantern is found in