CH 32
What are the two body plans in animals?
Radial and Bilateral
What is the function of the radula in mollusks?
Use it to feed
What genera do sharks and rays fall under?
Chondrichthyans
What is the biological form of an organism called?
Anatomy
Bats and hummingbirds are examples of what:
endotherms
What are the three clades seen within bilaterians?
deuterostomia, ecdysozoa, lophotochozoa
Which genera do leeches fall under?
Annelids
What organism is parasitic and feeds by clamping mouth onto fish and humans?
Lamprey
What region of the brain plays a role in thermoregulation?
hypothalamus
Root word for life:
vita
What regulates development of body form and can produce a wide range of animal morphology?
HOX genes
Which genera evolved flight without losing legs and can carry diseases?
Insects
What allows fish to control buoyancy?
Swim bladder
What are the 4 main types of animal tissue?
connective
muscle
nervous
Natural Selection
Which era had the cambrian explosion and bilaterians emerge?
Paleozoic
Which genera has a segmented body, hard exoskeleton, and jointed appendages?
anthropods
What fish was thought to be extinct but then “discovered” again in 1938?
coelcanths
What governs physiological change that occurs around every 24 hours?
Hint: Sleep cycle
Circadian Rhythm
What did the Haikouella, a primitive early chordate fossil, lack that vertebrates have?
Skull
When did the most common ancestor of all living animals likely live?
770 MYA
What genera is a hermaphrodite and best known as flat worms?
What clade under amphibia do frogs belong to?
Anura
What are the 4 processes in which organisms can exchange heat?
radiation
evaporation
convection
conduction
Most members of which of the following groups are most clearly associated with a wet or moist environment?
Amphibians