Biol 432 Lecture Flashcards
(10 cards)
Ancestral/Primitive/Plesiomorphic
A feature or species that arose early in a lineage
Derived/Advanced/Apomorphic
A feature or species that arose later in a lineage
Generalized
A structure/ species that performs several functions moderately well
Specialized
A structure/ species that effectively performs a more restricted function
Phylogeny
A group of organisms arranged by common descent.
Grade
A group of organisms with a similar morphological pattern of organization
Ontogeny
Developmental history of an individual from its conception to its death.
Adaptation
A feature that helps an individual survive better in its environment
Kingdom: Animalia
Phylum: Chordata
Subphylum:
Urochordata (Protochordate)
Cephalochordata (Protochordate)
Vertebrata