Difference between revisions of "AY Honors/Shells - Advanced/Answer Key"
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< AY Honors | Shells - AdvancedAY Honors/Shells - Advanced/Answer Key
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==9. What accounts for the distribution of mollusks.== | ==9. What accounts for the distribution of mollusks.== | ||
==10. Name two mollusks that have no shells. == | ==10. Name two mollusks that have no shells. == | ||
| + | <gallery> | ||
| + | Image:Unknown slug on rhubarb.jpg|<center>Slug</center> | ||
| + | Image:Octopus in sea life Helsinki.jpg|<center>Octopus</center> | ||
| + | Image:Cuttlefish.jpg|<center>Cuttlefish</center> | ||
| + | Image:Mastigoteuthis flammea.jpg|<center>Squid</center> | ||
| + | </gallery> | ||
| + | |||
==11. Find answers for the following interesting questions: == | ==11. Find answers for the following interesting questions: == | ||
===a. How are bivalve and univalve animals fastened to their shells? === | ===a. How are bivalve and univalve animals fastened to their shells? === | ||
Revision as of 03:15, 2 August 2008
1. Have the Shell Honor.
2. Define the term "mollusca" or "mollusk."
The word mollusc is derived from the French mollusque, which originated from the Latin molluscus, meaning thin-shelled, from mollis, soft
The body of a mollusk consists of three sections; a head, with eyes or tentacles; a muscular foot; and a visceral mass housing the organs.
3. Learn the classification terms of mollusks, know the distinguishing characteristics of each, and become acquainted with several species under each class.
4 Distinguish between univalve and bivalve mollusks from the following considerations:
a. Shell
b. Mollusk body
c. Reproduction
d. Movements
e. Securing food
f. Self-preservation
5. Identify from shells or drawings and know the meaning of the following concho logical terms:
a. Valve
b. Apex
c. Aperture
d. Byssus
e. Foot
f. Mantel
g. Operculum
h. Mother of pearl
i. Epidermis
j. Ribs
k. Teeth
l. Concentric lines
m. Canal
n. Spines
o. Whorls
p. Lips
6. Explain the development of a shell. How long do mollusks live?
7. Give some facts about the life of a strombus pugilis (fighting conch) and explain why this shell is so named.
8. Explain the activities of the shipworm.
Adventist Youth Honors Answer Book/Nature/Shipworm
9. What accounts for the distribution of mollusks.
10. Name two mollusks that have no shells.
Slug 
Octopus 
Cuttlefish 
Squid
