Does a fish have an exoskeleton? Do deuterostomes have exoskeletons? Do starfish have an exoskeleton? Does a jellyfish have an exoskeleton? Do porifera have exoskeletons? Do arthropods have a chitinous exoskeleton? Do corals have exoskeletons?
Tortoises are very ancient animals (about 200 million years). They have been around for longer than crocodiles, snakes, etc. They can live well beyond the age of 100 years. The shell of a tortoise is very hard and slick. This protects them from predator animals such as dogs etc. ...
Phylum Echinodermata - Echinoderms include starfish among other animals characterized by a spiny surface, coelom, water vascular system and endoskeleton. Phylum Mollusca - Mollusks are found in aquatic and terrestrial environments are characterized by a soft body (some have a hard shell protecting the...
What system does the cnidaria have that sponges lack? (a) Respiratory. (b) Nervous. (c) Circulatory. (d) Excretory. (e) Reproductive. Comparing cnidarians and sponges Sponges and cnidarians are two of the animal phyla that lack bilateral symmetry....
bêche-de-mer, Sea cucumbers, dried and used for food (related to starfish).beriberi, Deficiency disease caused by lack of thiamin (B1 of B complex).binary fission, Simple splitting of a parent cell into two daughter cells.bivalve, Mollusk having two shells (clam, oyster)....