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Sponges and Cnidarians. Sponges. Sponges Intro. Origin. Evolution Collar cells Uses of collar cells. Sponges Intro, cont. Diversity. Species # Variety. Characteristics of Sponges. Kingdom Phylum They are mostly # of cells Body contains. Characteristics of Sponges. Symmetry
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Sponges and Cnidarians
Sponges Intro. • Origin • Evolution • Collar cells • Uses of collar cells
Sponges Intro, cont. • Diversity • Species # • Variety
Characteristics of Sponges • Kingdom • Phylum • They are mostly • # of cells • Body contains
Characteristics of Sponges • Symmetry • Interior surface • Choanocyte
Choanocyte • Beating • Create • Capture
Choanocyte • Collar is made of • Why?
Choanocyte • The food particles then • How?
Food and Oxygen Exchange • Efficient? Non-efficient? • Why? • Lots of collar cells working together
Structure of a Sponge • Made of? • Spicules – • Spongin –
Spongin Fun fact: When you wash with natural sponges, this is the portion you wash/exfoliate with!
Characteristics of Sponges • Reproduce asexually • By? 2 months • Larva • Adults Sponge Love Scene #1 Sponge Love Scene #2 Sexual Budding
Three Main Body Types 1. Asconoid • Def • Characteristics
Three Main Body Types 2. Syconoid • Def • Characteristics
Three Main Body Types 3. Leuconoid • Def • Characteristics
Classification of Sponges • Kingdom: • Phylum: • Class Calcarea • Class Hexactinellida • Class Demospongiae
Class Calcarea • Spicules • Made of • Shape • Body types?
Class Hexactinellida • Spicules • Made of? • Description • Body types? • Often called?
Class Demospongiae • Spicules • Made of • Description • Body types? • Other characteristics
Characteristics of Cnidarians • Kingdom • Phylum • Examples: • Where do they live???
Characteristics of Cnidarians • Symmetry • Head region? • Two basic types: • Name, def, examples • Name, def, examples
Polyp Form • Polyp – • Lifestyle of polyps? • Body shape? • Mouth
Medusa Form • Medusa – • Lifestyle? • Body shape? • Mouth
Life Cycle • Body forms? • Reproduction • Polyp • Medusa
Characteristics of Cnidarians • Two layered body • Epidermis – • Def • Derived from? • Gastrodermis – • Def • Derived from? • Lines the • Main function
Characteristics of Cnidarians • Tentacles contain • Function • Characteristics • Nematocyst
Nematocyst • Stinging cells • Contain • When do they uncoil? • Contain
Nematocysts Nematocyst Firing
Four Classes of Cnidarians • Class Hydrozoa • Class Scyphozoa • Class Cubozoa • Class Anthozoa
Class Hydrozoa • Solitary • Colonial • Reproduce? • Where do they live? • Examples:
Obilia Medusa Polyp
Class Scyphozoa • Movement • Body form • Where do they live? • Organs? • Examples:
Class Cubozoa • Movement • Body form • Where do they live? • Characteristics? • Examples: