Animals Unit Test Flashcards
What are the three types of symmetry?
Radial symmetry: can be divided in
many ways off central axis (starfish)
Bilateral symmetry: cut in half (humans)
Asymmetrical: sponges, uneven
What are the advantages of exoskeleton and endoskeleton.
Exoskeleton provides more protection, but moves slower and less flexible then endo.
What is a nematocysts?
It is a jellyfish stinger.
What is cephalization.
Concentration of organs in worms head.
What characteristics do all animals have in common?
Eukaryotic
Multicellular
Heterotrophic
Have cells and tissue
Reproduce sexually
How is a 4 chambered heart a advantage.
It is more efficient.
What are the 8 characteristics of vertebrates.
-backbone
-endoskeleton
-advanced nervous system
-large brain
-complex heart and closed circulatory system
-epidermis for habitat
-paired appendages
-large Coelum
What is a coelum.
Body cavity of animal w organs.
Why are octopus the most advanced cephalopods
Bigger brain w good sense organs.
