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
The body of Porifera (sponges) is organized in such a way so that they form a complex system of pores and canals called the canal system. This system helps in regulating the flow of water within them e.g. Sycon.
Aschelminthes possess jointed appendages e.g.; Ascaris.
Annelids possess metameric, segmentation in the body e.g., the earthworm.
Arthropods possess jointed appendages in each segment of their body e.g., cockroach.
Echinodermata possess a water vascular system or ambulacral system e.g., Asterias or starfish.
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
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
Water vascular system is found in
Locomotory organs of echinoderms are:
Aristotle's lantern is found in