Are squids vertebrates? Do echinoderms have exoskeletons or endoskeletons? Do insects have exoskeletons? Do members of the phylum Platyhelminthes lay eggs? Do starfish belong to the phylum Chordata? Do amoebas have pseudopods? Are Chordata and chordate the same phylum? Do earthworms have exoskelet...
Insects don't have bones. Instead, they have hard shells called exoskeletons. Like a little suit of armor, an exoskeleton protects the insect's body and also keeps it from drying out. Which of the following animal is not an invertebrate? Animals without backbones are called invertebrates. The...
How many species of amphibians are there in the U.S.? What are the classes of arthropods, and examples of each? How many amphibian species are there in lakes? What do amphibians and arthropods have in common? What is one disadvantage of arthropods having exoskeletons? How many insects help...
Exoskeletons Most crustaceans have hard exoskeletons. Known as the carapace, these are essentially the animals body armor, keeping hungry predators from biting down on it. The carapace protects all of the animal's vital organs and in some cases must be cracked before it can be eaten (some exce...
with a backbone and a nerve column (spinal cord). Invertebrate: An animal lacking a skeleton. ... Live animals, such as: anemones, barnacles, snails, crabs, crawfish, millipedes, crickets, etc. [These are flexible, but you want representatives of animals with and without exoskeletons.] ...