Term
| What are the 3 groups included in the Annelids? |
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Definition
| Earthworms, Sandworms, Leeches |
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Term
Which of the following is true of the Annelids?:
A.) Pseudocoelomates
B.) Dueterostome invertebrates
C.) Elongated bodies
D.) All are True |
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Definition
C is true
They are true coelomates, and are protostome invertebrates |
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Term
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Definition
| Repeating segments separated by septa |
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Term
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Definition
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Term
| T/F: All metameres share universal systems for respiration, locomotion, and waste removal |
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Definition
| F: Each meamere (segment of annelids) has it's own set of systems for respiration, locomotion, and waste removal (excretory systems). |
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Term
| T/F: Each metamere has it's own digestive, nervous, circulatory, and reproductive systems |
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Definition
| F: the ENTIRE organism is integrated by a single digestive, nervous, circulatory, and reproductive system. |
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Term
| Do Annelid's bodies have a defined posterior and anterior end? |
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Definition
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Term
| T/F: Sandworms have no cephalization, while earthworms and leeches have well defined cephalization |
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Definition
| F!: The sandworms have fairly well defined cephalization, while the leeches and earthworms do NOT have cephalization. |
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Term
Which of the following is NOT true concerning the Annelids?
A.) Dorsal & Ventral sides are weakly evident
B.) have well defined body wall
C.) Set of internal organisms separated by a true coelom
D.) 2 of the above
E.) All True |
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Definition
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Term
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Definition
| outer set of muscles that cause the segment to get longer and thinner when they contract |
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Term
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Definition
| Inner set of muscles that cause the segment to get shorter and fatter when they contract |
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Term
| What is the benefit of to Annelids of having 2 sets of muscles? |
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Definition
| Havinf 2 sets of muscles allows annelids to move in a more sophisticated rhythmic fashion, alternating between sets of radial and longitudinal muscles |
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Term
| T/F: Coelom is filled with fluid that is under pressure |
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Definition
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Term
| What role does the Coelomic fluid play to the Annelids? |
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Definition
| That coelomic fluid acts as a hydrostatic skeleton to the worm, since they lack any kind of shell or an internal rigid skeleton |
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Term
| What type of digestion system do Annelids have? |
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Definition
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Term
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Definition
| A small chamber capable of expanding and creating vacuum |
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Term
| Do the Annelids have a crop? |
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Definition
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Term
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Definition
| Surrounded by muscular walls that help grind the food |
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Term
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Definition
| An intrusion into the lumen from the dorsal side that increases the total absorptive surface area of the intestine |
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Term
Which of the following is NOT true concerning the Annelids?
A.) Closed Circulatory System
B) Circulatory System consists of 3 sets of parts that form a loop
C.) Have both a dorsal and a ventral blood vessel
D.) 2 of the above |
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Definition
B is not true
The circulatory system consists of 4 sets of parts that form a loop |
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