Animal Phylum Flashcards

Phylum or Phyla is a level of classification or taxonomic rank below kingdom and above class. These flashcards are also about the rating of plant and animal kingdom according to the parameters set for their working and mechanisms. Take these Animal Phylum Flashcards  

225 cards   |   Total Attempts: 196
  

Cards In This Set

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What are the seven characteristics of animals?
Multicellular, heterotrophic, Eukaryotic cells, require oxygen, reproduce sexually (and perhaps sometimes asexually), motile, sexual reproduction leads to formation of Zygote which develops into an embryo.
Five basic characteristics used when distinguishing between different phyla of animals:
Body symmetry, cephalization, type of gut, type of body cavity, segmentation.
Body symmetry
How many equal parts can the body be cut into?
Radial symmetry
Body parts arranged regularly around a central axis. Animal can be cut into several identical segments, all aquatic or marine
Bilateral Symmetry
Body axis runs from anterior end to posterior end. Has dorsal surface and ventral surface, body can be cut into two planes (left and right)
Cephalization
Is there a head region where nerves become more concentrated?
Sac-like gut
One opening used for food entry and waste exit, one region where digestion, storage and excretion take place, incomplete digestive system.
Tube-like gut
Two openings at opposite ends, one where food enters and other for waste exit, seperate regions of tube for digestion, absorption, storage and excretion, complete digestive system.
Body cavity
Space between gut and body wall
Coelum
A peritoneum (type of tissue) lined body cavity between the gut cavity and the body wall (i.e. epidermis)
Three types of body cavities
Acoelomate, pseudocoelomate, and coelomate
Acoelomate
No body cavity, region between gut and body wall packed with organs
Pseudocoelomate
Unlined body cavity (pseudocoel) between gut and body wall (no peritineum)
Coelomate
True coelom present (i.e peritoneum lined cavity between gut and body wall)
Segmentation
Repeating series of body units, units may or may not be similar to one another.