They move throughout the mesohyl carrying nutrients to all parts of the sponge
Greek origin "phylon" -
meaning ‘race’ or ‘stock’
Middle germ layer
long, thin structures that can be used for cell mobility or to create a current
Having two germ layers - reason sponges do not develop organs
Outer germ layer
Fertilization in sponges can be both __________ and external
Most sponges are __________ having both male and female sex cells
Type of body form that resembles asconoids but are larger with a thicker body wall
most complex and most common of the sponge types/body forms
Inner germ layer
Thin, flat, epithelial-like (skin-like) cells on exterior surface of a sponge
Cell layers supported by a skeleton of flexible protein fibers
immobile, fixed in one place
Internal buds produced during unfavorable conditions
Down
relationship where both organisms benefit from the relationship
Term meaning having no sides or halves that are alike
Collar cells that have flagella that beat & create a current to circulate water through sponge
larger opening in a sponge through which water is pumped out of the body
process of removing food from the surrounding water
The simplest sponges; they are small and tube-shaped
Examples of ________ reproduction include budding, gemmule formation, & regeneration
Cells which generate a flow of water through the sponge and assist with filter feeding
Class of sponges with spicules of calcium carbonate
Ability to regrow missing tissues
Through ________ reproduction, sponges fertilize haploid gametes
A sponge is a collection of cells embedded in a jellylike matrix called __________
pores on a sponge that allow water to enter the body
hard structures that provide support to surrounding tissue, composed
of calcium or silica
Living sponges traditionally have been assigned to _________ (#) classes
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