Chapter 33 - invertabrates

This structure found in phylum Mollusca is responsible for secreting the shell. Question options: Mantle Visceral mass Radula Gastrovascular cavity Muscular foot

Mantle

A _________ is a digestive tube with a separate mouth and anus that lies within a fluid-filled pseudocoelom. Question options: Invertebrate cavity Alimentary canal Longitudinal cavity Gastrovascular cavity Body cavity

Alimentary canal

A confused friend from your course has made a Halloween costume that is supposed to show one animal phylum. It has a hard outer shell and a water vascular system. You point out that the costume combines features of Question options: Platyhelminthes and Cnidaria. Cnidaria and Porifera. Chordata and Cnidaria. Arthropoda and Echinodermata. Echinodermata and Chordata.

Arthropoda and Echinodermata.

This group of mollusc is found in aquatic environments, and is characterized by a hinged shell. Question options: Cephalopods Chitons Bivalves Gastropods Annelids

Bivalves

These flagellated cells function to pull water into the body of the sponge, and can differentiate into sperm during sexual reproduction. Question options: Leukocytes Choanocytes Cnidocytes Amoebocytes Erythrocytes

Choanocytes

Which of the following animal phyla is not an invertebrate? Question options: Arthropoda Chordata Cnidaria Echinodermata Nematoda

Chordata

The tentacles of cnidarians are armed with these unique cells that function in defense and capture of prey. Question options: Choanocytes Nematocysts Cnidocytes Leukocytes Amoebocytes

Cnidocytes

This process is characterized by a larval stage that look entirely different from the adult stage after undergoing pupation. Question options: Parthenogenesis Complete metamorphosis Indeterminate change Incomplete metamorphosis Complete makeover

Complete metamorphosis

This group of invertebrate is characterized by being covered in a tough coat called a cuticle, which undergoes a process of molting. Question options: Nematodes Molluscs Ecdysozoans Cnidarians Trematodes

Ecdysozoans

Which phylum has a water vascular system? Question options: Nematoda Echinodermata Annelida Arthropoda Cnidaria

Echinodermata

Sponges are this type of feeder that captures food particles suspended in the water. Question options: Bulk feeder Systemic feeder Substrate feeder Filter feeder Mobile feeder

Filter feeder

Which of the following statements about arthropods is false? Question options: Terrestrial arthropods have internal structures specialized for gas exchange. Arthropod bodies are completely covered by a cuticle. Arthropods have an open circulatory system. Most arthropod sensory organs are concentrated at the posterior end. Arthropods have well-developed sensory organs.

Most arthropod sensory organs are concentrated at the posterior end.

Your friend, who was setting up a lab on arthropods for your class, put out specimens of the following groups. Which needs to be removed? Question options: Pancrustaceans Myriapods Ophiuroids Chelicerates

Ophiuroids

This phylum is the best example of an an animal group with enhanced overall surface area. Question options: Platyhelminthes Cnidaria Annelida Nematoda Echinodermata

Platyhelminthes

The flatworm excretory apparatus consists of these structures, which are networks of ciliated tubules that pull fluid through ducts opening to the outside environment. Question options: Kidneys Protonephridia Protons Nephrons Capillaries

Protonephridia

There are two variations on the cnidarian body plan, the sessile __________ and motile __________. Question options: larva, metamorph metamorph, larva medusa, polyp polyp, medusa child, adult

polyp, medusa

The major difference between the two divisions of annelids, the errantians and sedentarians, is that Question options: sedentarians are more mobile than errantians. sedentarians are all marine organisms. errantians include leeches. sedentarians are less mobile than errantians. sedentarians contain parapodia.

sedentarians are less mobile than errantians.

If you wanted to show an example of segmentation to a group of visiting students, which phylum would be the best choice? Question options: Arthropoda Porifera Cnidaria Nematoda Mollusca

Arthropoda

Which of the following groups is the parasitic group belonging to Rhabditophora. Question options: Catenulids Cnidarians Planaria Trematodes Nematodes

Trematodes

If you discovered a new organism with 10 jointed legs, you would expect it to have Question options: a water vascular system. a radula. a closed circulatory system. a siphon. muscles attached to an exoskeleton.

muscles attached to an exoskeleton.