Taxonomic Groups

Taxonomic Groups - Taxonomic Groups 1) Animalia a)...

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Taxonomic Groups 1) Animalia a) Choanoflagellates i) Collar cells b) Multicellular i) Advantages (1) Better surface to volume ratio for gas exchange (2) Can grow larger (3) Division of labor (4) Repair damaged cell vs. death c) Porifera i) Most ancestral animal: Precambrian fossils ii) Lack a mouth and a gut iii) Sessile iv) Bodies organized around system of canals (1) Aquiferous System (a) Asconoid: Simplest (b) Syconoid: More Complicated (c) Leuconoid: Most Complex v) Pumping Water (1) Feed, breath, reproduce, and excrete vi) Skeleton (1) Spicules (a) Calcium carbonate or silicon vii)Cell Types (1) Pinacocytes (a) Epidermal Cells (2) Porocytes (a) Pore cells (3) Choanocytes (a) Collar cells (4) Archaeocytes (a) Amoeboid and matrix cells (5) Spongocytes (a) Makes protein sponging (6) Collencytes (a) Makes protein collagen viii) Calcarea (1) Calcareous skeletons (a) Spicules made of calcium carbonate (2) Small size (3) Tubular or vase shaped (4) All three types of organization (5) Marine (6)
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ix) Hexactinellida (1) Siliceous skeleton (2) Spicules have six rays (3) Cylindrical or funnel-shaped (4) Most are Syconoid or Leuconoid (5) Marine, most inhabit deep water x) Demospongiae
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Taxonomic Groups - Taxonomic Groups 1) Animalia a)...

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