Upgrade to remove ads
Animal Diversity Lab 1 Terms To know
Terms in this set (24)
A large opening on a sponge through which filtered water is expelled
a needle of silica or calcium carbonate in the skeleton of some sponges
one of the small openings in a sponge's body through which water enters
collar cells; it creates a current that draws water in through the
pores and out through the osculum.
the central cavity of a sponge
1 of 3 body patterns for sponges; stalk-like spongocoel covered with a single layer of choanocytes.
have a tubular design similar to the ascon sponge, but the body wall is folded. The "folds" form radial canals. Choanocytes line the radial canals rather than the spongocoel.
represent the most complex body form. The canal system is extensively branched. Small incurrent canals lead to flagellated chambers lined by choanocytes.
body parts arranged in a circle around a central point, as found in animals such as jellyfish and sea urchins
Body symmetry in which a central longitudinal plane divides the body into two equal but opposite halves. like the human body or that of higher animals.
concentration of sense organs and nerve cells at the front of an animal's body w/ bilateral symmetry; i.e. the head
Incomplete Digestive System
a single opening to a pouch-like cavity serves as both mouth and anus
Complete Digestive system
two openings one for food and the other for waste
animals that have only an endoderm and an ectoderm, 2 primary germ layers. i.e. animals that have developed this: cnidarians & ctenophores
has three germ layers: the ectoderm, endoderm, and mesoderm. i.e. All higher and intermediate animals (from flat worms to humans)
the body cavity
an animal that lacks a coelom, or body cavity
Tissue derived from mesoderm only partly lines the fluid filled body cavity of these animals.; false cavity; i.e. rotifers, pinworms, and horsehair worms
The opening of an embryo's central cavity in the early stage of development. 2 major groups of animals: protostomates & deuterostomates
a large clade consisting of serveral interesting phyla. The best known phyla within this clade is Platyhelminthes (flatworms), Rotifera (rotifers), Mollusca (snails, oysters, and squid), and Annelida (segmented worms).
is a clade consists of arthropoda (crabs, insects) and Nematoda (roundworms)
A major division of the animal kingdom that comprises all animals other than protozoans and sponges. They are multicellular animals with differentiated tissues.
a clade comprising all major animals groups except sponges, placoazoa and several other little known animals.
animals with radial symmetry
THIS SET IS OFTEN IN FOLDERS WITH...
Lab: Animal Diversity I
Biology Exam 3 Study
YOU MIGHT ALSO LIKE...
Bio 102 Exam 3 review Chapter 27
Chapter 33: Animal Diversity and the Evolution of…
Chapter 26 Acc Bio