Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/16

Click to flip

16 Cards in this Set

  • Front
  • Back
Name the types of Mollusks
Bivalves-clams and scallops

Gastropoda-snails and slugs

polyplacophora-chitons (8 plated)

Cephalopoda-squids octapus
Bivalves
part of mollusks

suspension feeders

have two shells
Gastropoda
snails, slugs, nudibranchs(stomach foot)

-has radula used to cut plants

-mantle secretes shell to create more shell

-herbavores, detritovores, predatory carnivors (cone shells use harpoon to fish
Polyplacophora
chitons have 8 plates on back
Cephalopoda
squids, octapus, nautilus,cuttle fish

-usually jets with mantle
-camoflague with color and texture
-intelligent
-complex eyes
Ecdysozoa
exoskeleton that sheds
What groups are in Ecdysozoa
Nematoda and Arthropoda
Nematodes
round worms
-no circumferencial muscles
-free living but also parasitic
-pseudocoelom

ex: catipillars
Arthropods
-jointed legs
-exoskeleton
-coelom

sensory system:
-simple eye(light or dark)
-compound eye (image)
-chemosensory like antennae
oviparity
egg bearing
vivaparity
live bearing
Doushantou Formation
570 mya
-sponges
-jellyfish
-bilateral sulfer bacteria
Ediacarian Formation
550 MYA
-sponges
-cnidarians
-ctenophores
-arthropod
Burgess Shale
510 MYA
-sponges
-jellyfish
-arthropods
-mollusks
-echinoderms
-chordates
Cambrian Explosion
cambrian animals don't look like recent animals
-hox gene
-ecological- volcanoes form bubble and we can study the air inside bubble
Themes in Animal Evolution
-orginization of cells into tissues
-symmetry and cephalization
-body cavity-coelom
-developmental patterning