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25 Cards in this Set
- Front
- Back
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SESSILE |
Permanently attached by thr base. No sense of locomotion. |
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SYMMETRY |
General form of an organism. |
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RADIAL SYMMETRY |
Cylindrical body shape |
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BILATERAL SYMMETRY |
Body parts are arranged equally on the left and right sides longitudinally |
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SPHERICAL SYMMETRY |
Can be seen to animals that have the shape of the sphere |
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ASSYMETRY |
Having no definite shape |
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DORSAL |
Refers to the upper surfaces |
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VENTRAL |
Refers to the lower surfaces |
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ANTERIOR |
Front end |
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POSTERIOR |
Hind or back end |
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ECTODERM |
Outer layer |
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MESODERM |
Middle layer |
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ENDODERM |
Inner layer |
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BUDDING |
A form of asexual reproduction by which an organism forms buds, which are group of cells that enlarge and attached to a parent for a time then break off and live independently |
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EXOSKELETON |
Skeleton found outside |
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ENDOSKELETON |
Skeleton found inside |
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AUTOTOMY |
Self cutting of a body part |
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REGENERATION |
The growing of lost part |
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SEGMENTATION |
Refers to wether or not the body of an organism is divided into a linear series of segments |
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HERMAPHRODITE |
An animal which possesses both male or female reproductive organ |
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PHYLUM PORIFERA |
Pore bearing animals like sponges. |
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EXCURRENT PORES |
CO2 and waste leaves the sponge's body. |
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INCURRENT PORES |
O2 and food in the form of diatoms, small protozoans, bacteria and organic particles |
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SIMPLE SPONGE |
Wall is formed by two layers of cell separated by another layer that contains a jelly like substance loose cells and spicules. |
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SPONGIN |
Network of fibrous, tough and flexible substances. |
