Chapter 30 Test? Name:___KEY____________ Score:_80___80?
Prior to answering any questions READ all of the questions first. It is seriously in your best interest to make sure you
know what is expected of you on this test.
Define all of the terms below AND give an example of an animal that demonstrates the term and predominately show that
term / feature. Be thorough. Each question is worth 3 points. 2 points for the definition and 1 point for the example.
1a. Segmentation:
1b. Example animals: Annelids: Earthworms, Leeches, Ragworms and all arthropods
Segmentation is evidence by body, rings, a coelom divided by septa, setae on most segments, ganglia and lateral nerves
in each segment, nephridia in most segments, branch blood vessels in each segment.
2a. Cephalization: 2b. Example animal: Octopus, Squid, scorpion (yeah…stuff with a head.)
Having a well-recognized anterior head with a brain and sensory receptors
3a. gastropod: means stomach foot
Mollusks with a broad, flat foot.
3b. Example animal: snails and slugs
4a. water vascular system: in echinoderms
4b. Example animal: sea stars, sea cumbers, and brittle stars
Series of canals that takes water to the tube feet of an echinoderm, allowing them to expand.
5a. cephalopod: means “head foot”
5b. Example animal: octopus, squid, cuttlefish, nautilus
Type of mollusk in which a modified foot develops into the head region; includes squids, cuttlefish, octopuses & nautiluses
6a. mollusc: 6b. Example animal: snails, octopus, and clam
Characterized by the visceral mass, a mantle and a foot
7a. exoskeleton:
7b. Example animal: crabs, lobsters, insects, arachnids
Protective external skeleton in arthropods
8a. protostome: means “first hole”
8b. Example animal: all mollusks, annelids and arthropods
A group of coelomate animals in which the first embryonic opening (the blastopore) is associated with the mouth.
9a. open circulatory system: not closed…no vessels
9b. Example animal: oysters and most molluscs
Arrangement of internal transport in which blood bathes the organs directly, and there is not distinction between blood and
interstitial fluid
11a. septa: division of the coelom
Internal divisor of coelom; evident in segmented animals
11b. Example animal: earthworms
12a. echinoderms: means spiny skin
12b. Example animal: sea star, sea urchin
Phylum of marine animals that includes sea stars, urchins, sand dollars; characterized by radial symmetry and a water
vascular system.
13a. nephridia:
13b. Example animal:_Phylum Annelida
Segmentally arranged, paired excretory tubules of many invertebrates, as in the earthworm
14a. mantle: 14b. Example animal: clam, oyster, snail
In mollusks, an extension of the body wall that MAY secrete a shell
15a. annelid:
15b. Example animal: ragworm, leech earthworm
Phylum of invertebrates tat contains segemented worms, such as the earth worm and leech
16a. crustacean: sub-phylum of Arthropod 16b. Example animal: shrimp, lobster, crab
Member of group of marine arthropods that contains among other, shrimps, crabs, crayfish, etc.
17a. deuterostome: means “second hole”
17b. Example animal: sea stars & humans
Group of coelomate animals in which the second embryonic opening is associated with the mouth; the first embryonic
opening in the blastopore is associate with being the anus
18a. cephalathorax: means “head body” 18b. Example animal: crab, shrimp, lobster
Fused head and thorax found in decapods
19a. Malpighian tubules: 19b. Example animal: grasshopper
Blind threadlike excretory tubule near the anterior end of an insect’s hindgut
20a. maxilla: mouthpart on insects 20b. Example animal: grasshopper & butterfly
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21-30. (20 points) Completely label all of the blanks in the drawing below. Feel free to use the information from questions
1-20 to help you with these questions. (2 points each). Some of the blanks are for animal phyla and some are for
classification features. Answer each in the rectangle provided.
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