Please answer all questions

1		In most annelids, the coelom develops as a split in mesoderm on each side of the gut. This type of formation is _______, forming two compartments in each segment.
			A)	mesocoelous
			B)	enterocoelous
			C)	bilateralcoelous
			D)	schizocoelous
2		The layer of the mesoderm that lines the body wall and forms the septa is called the
			A)	mesentery.
			B)	parapodium.
			C)	peritoneum.
			D)	odontophore.
3		The alternating longitudinal and circular muscle contractions that pass along the body to facilitate locomotion are called
			A)	progressive.
			B)	peristaltic.
			C)	hydrostatic.
			D)	regressive.
4		The polychaetes differ from other annelids by having a well-developed head that often bears the eyes, antennae, and sensory palps, and is called a ________, or first segment.
			A)	cephalostomium
			B)	peristomium
			C)	periostracum
			D)	prostomium
5		The paddlelike appendages that characterize the polychaetes are called
			A)	propodia.
			B)	peripodia.
			C)	parapodia.
			D)	setae.
6		The segment of the annelids that bears the jaws is called the
			A)	cephalostomium.
			B)	peristomium.
			C)	periostracum.
			D)	peritoneum.
7		Some polychaetes have segments that contain viscera that are collectively called the _______ and other segments that contain gametes that are called the
			A)	trunk, body.
			B)	body, atoke.
			C)	atoke, epitoke.
			D)	epitoke, trunk.
8		Food is drawn into the mouth of an oligochaete by suction created by the muscular
			A)	setae.
			B)	pharynx.
			C)	jaws.
			D)	chloragogen.
9		Chloragogen tissue, which is found in the typhlosole, functions in the process of
			A)	circulation.
			B)	reproduction.
			C)	digestion.
			D)	respiration.
10		The annelids have a double circulation in that materials can be moved by the blood or by the
			A)	coelomic fluid.
			B)	excretory organs.
			C)	peristalsis of the intestine.
			D)	respiratory flow.
11		Leeches feed from the body fluids of their prey. The ones that feed on blood have very slow digestion. This is workable because they have ________ to aid in digestion.
			A)	no enzymes
			B)	preservative chemicals
			C)	bacteria
			D)	blood proteins
12		The crop of the earthworm
			A)	absorbs calcium into the blood circulation.
			B)	excretes calcium from the blood circulation into the intestine.
			C)	stores ingested material.
			D)	grinds the swallowed soil so that it can be digested.
13		The hirudineans
			A)	are endoparasites.
			B)	develop an increasing number of segments during adult life.
			C)	usually lack setae.
			D)	typically have anterior and midventral suckers, similar to flukes.
14		The coelom of the annelids is formed by splitting of the embryonic mesoderm on each side of the gut within each compartment. For this reason the cavity is sometimes called a
			A)	schizocoel.
			B)	mesocoel.
			C)	protocoel.
			D)	pseudocoelom.
15		Locomotion in the annelids is accomplished by alternating waves of contraction by the longitudinal and circular muscles passing down the body. This is known as
			A)	segmental advancing.
			B)	rhythmic motion.
			C)	hydrostatic pressure.
			D)	peristaltic contraction.
16		The polychaetes differ from other annelids by having a well-developed _________ with specialized sense organs, and paired paddlelike _________.
			A)	clitellum, head
			B)	head, parapodia
			C)	parapodium, setae
			D)	setae, clitella
17		The type of tissue that is found around the intestine in the annelids that can synthesize glycogen and break free to distribute nutrients in the coelom is called
			A)	chloragogen tissue.
			B)	archeoblastic tissue.
			C)	pancreatic tissue.
			D)	nephridial tissue.
18		The structure seen in oligochaetes, which secretes mucus and produces a cocoon that protects the developing young zygote is called the clitellum.
			A)	True
			B)	False
19		The hirudineans have 34 segments, anterior and posterior suckers, and no parapodia.
			A)	True
			B)	False
20		A nephridium occupies two segments and is composed of a ciliated funnel called a nephrostome, and several loops of tubules that lead to an opening called a metanephridium.
			A)	True
			B)	False
21		Unlike the polychaetes, the oligochaetes are characterized by having a clitellum for reproduction and suction for feeding.
			A)	True
			B)	False
22		The oligochaetes have a nephrostome in each segment, and a nephridiopore in the next segment to facilitate excretion.
			A)	True
			B)	False
23		The rigid chitinous structures in annelids that allow the fleshy parapodia to form attachments to the substrate are known as the spines.
			A)	True
			B)	False
24		The body cavity of an annelid is referred to as a pseudocoelom.
			A)	True
			B)	False
25		The first segment of an annelid, which bears the mouth, is calledthe prostomium.
			A)	True
			B)	False
26		A ventral heart propels the circulatory fluid of the annelid.
			A)	True
			B)	False
27		The body cavity of annelids is filled with fluid and serves as a hydrostatic skeleton in all classes.
			A)	True
			B)	False
28		Copulation in oligochaetes is facilitated by the clitellum, which secretes the gametes.
			A)	True
			B)	False
29		Leeches are all ectoparasites, whereas all oligochaetes are freeliving.
			A)	True
			B)	False
30		In a cladogram of the phylum Annelida, the most primitive group would be the class Hirudinea.
			A)	True
			B)	False
31		The peristomium is the lining of the coelom.
			A)	True
			B)	False
32		The oligochaetes feed by suction. This is accomplished by expanding the prostomium.
			A)	True
			B)	False
33		The organ of excretion in annelids is the nephridia.
			A)	True
			B)	False
34		The ciliated part of the organ of excretion in an annelid is the nephrostome.
			A)	True
			B)	False
35		The polychaetes have a larval form that is the trochophore.
			A)	True
			B)	False
36		Development in the oligochaetes and the hirudineans is direct, and therefore no larva is formed.
			A)	True
			B)	False
37		The term metamerism means that the organism has internal septa.
			A)	True
			B)	False