Symmetry
When one shape becomes exactly like another if you flip, turn, or rotate it.
What is symmetry?
Animals without a backbone.
What are invertebrates?
This animal depends on it's host for food.
What are parasites?
Name the two body parts of an arachnid.
What are
1. cephalothorax2. abdomen
Fixed in one place; immobile.
What is sessile?
Animals with a body shape arranged in a circle surrounding a central point have this type of symmetry.
What is radial symmetry?
Soft bodied group of invertebrates that typically have a shell.
What are mollusks?
When an animal gets it's food out of the water that flows through it's body is called _________________.
What is a filter feeder?
Name 3 body parts of an insect?
What are...
1. head
2. thorax
3. abdomen
Structures such as claws, legs, and antennae that grow from the body.
What are appendages?
A line can be drawn down the center of an organisms body to divide them into two similar parts.
What is bilateral symmetry?
Invertebrates (mollusks) that have two shells that are hinged together.
What are bivalves?
A specialized tentacle used for stinging to catch their prey or for protection.
What are nematocysts?
Thin layer of tissue that covers the mollusks body.
What is the mantle?
Razor like tongues snails use to eat.
What are radula?
Organisms that have an irregular shape that can not be divided into equal parts have this type of symmetry.
What is asymmetrical?
The most diverse group of mollusks.
What are gastropods?
Tiny free floating animals that are food for other animals.
What are zooplankton?
Group of invertebrates that are made of repeating segments or rings. (list 2 examples)
What are annelids?
Examples: Earthworms and leeches
Describe (in detail) two differences between millipedes and centipedes.
Millipedes are herbivores, have 2 sets of jointed legs per segment.
1. Flatworms (for example planarians) have this type of symmetry.
2. Sponges have this type of symmetry.
3. Jellyfish have this type of symmetry.
1. What is bilateral symmetry?
2. What is asymmetrical?
3. What is radial symmetry?
What are Arthropods.?
List 5 characteristics that most animals share. (from notes)
1. Animals cannot make their own food.
2. Animals digest their food.
3. Most animals can move.
4. Animals are multicellular.
5. Most animals are made up of Eukaryotic cells.
Two types of cells found in sponge. (describe them)
1. What are collar cells: lining the inner surface of their central cavity.
2. What are flagella: whip like structures that extend from the collar cells and keep the water moving through the sponge.
1. polyp: vase shaped, anchored to the ground (sea anemone)
2. medusa: free swimming, bell shaped (jellyfish)