Animals Flashcards
(25 cards)
Have a backbone
Vertebrates
Do not have backbone
Invertebrates
Evolutionary adaptation of a cell
Specialization
An animal takes in organic material or food usually like other animals and shit
Ingestion
Diploid cell that results from the fusion of the gametes
Zygote
Cells become specialized
Differentiation
Animals with a notochord
Chordate
Firm flexible rod of tissue
Notochord
Hollow tube above notochord
Dorsal nerve chord
Small outer pockets
Pharyngeal pouches
Body arrangement in which parts that lie on opposite sides of an axis are identical
Symmetry
Body plan in which parts are organized around an axis
Radial symmetry
Back
Dorsal
Side
Ventral
Toward the head
Anterior
Toward the booty
Posterior
Two similar halves
Bilateral symmetry
Concentration of sensory/brain in front
Cephalization
Tissues layers in embryos
Germ layer
Repeating units
Segmentation
Rigid outer covering
Exoskeleton
Specialized for gas exchange in water
Gills
Circulatory fluid is open loop
Open circ sys
Closed loop
Closed circ sys