Term
| What are the 3 major classes of Mollusks? |
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Definition
- Gastropoda
- Cephalopoda
- Bivalvia
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Term
Identify the mollusc class for each picture below.
[image][image][image] |
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Definition
Pic 1 - (Snails) - Gastropoda
Pic 2 (Octopus) - Cephalopoda
Pic 3 (clam shell) - Bivalvia |
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Term
Give 2 examples of class Gastropoda.
Describe the purpose of shell. |
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Definition
- Snails
- Slugs
Purpose of Shell:
Protects against environment and snail can hide inside of shell and can seal in moistore. |
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Term
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Definition
The operculum is a trapdoor that covers the foot and can seal the soft parts of the animal inside the shell safe from predators and seal moisture in.
[image][image] |
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Term
| What are 3 characteristics of Molluscs? |
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Definition
- Shell - (made of calcium carbonate)
- Radula - (toothed tongue, used for feeding)
- Open Circulatory System - (Blood is in direct contact with organs)
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Term
| What are 2 examples and a 2 characteristics of class Bivalvia? |
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Definition
Two examples: clams and oysters
Characteristics:
- most are marine (salt water)
- filter feeders (water enters through gills and food is filter out)
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Term
What class of molluscs is shown below?
[image] |
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Definition
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Term
| Describe 3 functions (adaptations) of class Bivalves. |
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Definition
- Gills - filter and collect food that the stomach digests
- Mantle - thin membrane lining outside of body and inside of shell
- Adductor muscles and hinge between shells - help close and seal two shells of a bivale (like a clam)
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Term
| Give 3 examples of class Cephalopods and give 4 characteristics. |
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Definition
3 Examples: Squid, Octopi, and Nautilus
4 Characteristics:
- cephalopod (means "head foot")
- closed circulatory system (like us)
- high cephalization (enlarged head, like us)
- complex and intelligent brain!
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Term
Identify each example of class Cephalopods shown below.
[image]
[image][image] |
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Definition
- Squid
- Nautilus (shelled)
- Octupus
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Term
| According to one of your biology slides on Cepholopods, when do Cepholopods appear and which cepholopod appeared first? |
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Definition
According to ppt,
- Cephalopods appeard in late Cambrian Period, before fish
- Nautilus first, then Octupus, Squid, and Cuttlefish
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Term
| What is the one extra special "tricks" that the octupus can do? |
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Definition
Impersonate snakes, lions, and lionfish using their camaflage abililities. |
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Term
| Describe 5 stages of an attack by a blue-ringed octopus. |
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Definition
- Painless bite
- Nausea
- Loss of Vision (within seconds you are blind)
- Loss of Touch, Speech, and Ability to Swallow
- Within 3 minutes, paralysis and respitory arrest
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Term
| What is example of a cephalopod is shown below?[image] |
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Definition
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