Mollusks Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
What does "molluska" mean? | "soft body" |
Appx. how many species are there of mollusks? | 47,000 |
Mollusks' habitat? | aquatic (mostly marine) and terrestrial |
name some characteristics of mollusks: | -gills-used to carry out respiration-size: <1in to 66ft.-reproduce sexually-shells fossolize after filling up with sediments-used for utiencels/money |
Describe the class Gastropoda: | univalves (one-shell); (slug,snail)--terrestrial but also live in water-PELECYBODA-bivalves-two shells (clam, mussel, scallop)--all aquatic-CEPHALOPODA-head-footed (octopus/squid)-most intelligent and all marine with radula. |
Describe the three distinct regions of the mollusk: | -Head-footed region:where animal has the mough or any other sense organ and the foot(also with radula)--Visceral Mass Region-where you will find any of the reproductive... organs.-Mantle:surrond viseral mass and produces shell. |
Describe the habitat, size, predators, and reproductive habits of the clam: | -clams are bivalves and can range from <1in. to 4ft. in legnth-starfish-primary predator-habitat: aquatic -bisexual; reproduce sexually; and interiourly |
Describe the outer and somewhat internal structure of the clam: | --shells held together by hinged ligaments--shell opens on ventral side to allow the foot to move in and out--2 openings on posotrour end allow water to move in and out. (incurrent/excurrent)*(gills found under mantle) |
Describe the three shell layers of the clam: | -tough outer layer-middle Prismatic Layer: made of calcium carbonate and colorful-Pearly layer--invisible |
How does the foot help the clam move? | Acts as an anchor so three muscles in the foot can contract and manipulate movement=> slow |
Describe the nervous system of the clam: | -no brain-has sensory sells that respond to light, touch... |
Describe the circulatory process | oxygen through ixcurrent pore through gills that extract O2=>"hearts"/lt/rt atria=>body cavity=> oxygen is absorbed by blood cells=> blood is collected in sinuses=>flows through gills and back to heart. (open circulatory system) |
Describe the digestion process of a clam | -cilia on mouth sweep food in throug gills=>esophagus=>stomach=>intestine=>undigested food and waste pass out anus and into mantle cavity=>excurrent siphen. |
Created by:
BurriedInBooks
Popular Science sets