sponges and cnidarians
DESCRIPTION
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 - PowerPoint PPT PresentationTRANSCRIPT
Sponges and
Cnidarians
Sponges
Sponges Intro.
Origin EvolutionCollar cells
Uses of collar cells
Sponges Intro, cont.Diversity
Species #Variety
Characteristics of SpongesKingdom
PhylumThey are mostly# of cellsBody contains
Characteristics of SpongesSymmetryInterior surface
Choanocyte
ChoanocyteBeatingCreateCapture
ChoanocyteCollar is made of Why?
ChoanocyteThe food particles then How?
Food and Oxygen ExchangeEfficient? Non-efficient?
Why?▪ Lots of collar cells working together
Structure of a SpongeMade of?
Spicules – Spongin –
Spicules
SponginFun fact:
When you wash with natural
sponges, this is the portion you wash/exfoliate
with!
Spicules & Spongin
Characteristics of SpongesReproduce asexually
By? 2 monthsLarvaAdults
Budding
Sexual
Sponge Love Scene
#2
Sponge Love Scene #1
Gemmule
Three Main Body Types1. Asconoid
Def Characteristics
Three Main Body Types
2. Syconoid Def Characteristic
s
Three Main Body Types
3. Leuconoid Def Characteristi
cs
Classification of Sponges
Kingdom:Phylum:Class CalcareaClass HexactinellidaClass Demospongiae
Class CalcareaSpicules
Made of Shape
Body types?
Class HexactinellidaSpicules
Made of? Description
Body types?Often called?
Class Hexactinellida
Class DemospongiaeSpicules
Made of Description
Body types?Other characteristics
Class Demospongiae
Cnidarians
Characteristics of CnidariansKingdom
Phylum
Examples:
Where do they live???
Characteristics of Cnidarians
Symmetry Head region? Two basic types:
1. Name, def, examples2. Name, def, examples
Polyp FormPolyp –
Lifestyle of polyps?
Body shape? Mouth
Medusa FormMedusa –
Lifestyle? Body shape? Mouth
Life CycleBody forms?Reproduction
Polyp Medusa
Life Cycle
Characteristics of CnidariansTwo layered body
Epidermis – ▪ Def▪ Derived from?
Gastrodermis – ▪ Def▪ Derived from?▪ Lines the▪ Main function
Characteristics of Cnidarians
Characteristics of Cnidarians
Tentacles contain Function Characteristics Nematocyst
NematocystStinging cells ContainWhen do they uncoil?Contain
Nematocysts
Nematocyst
Firing
Four Classes of Cnidarians
Class Hydrozoa
Class Scyphozoa
Class Cubozoa
Class Anthozoa
Class HydrozoaSolitaryColonialReproduce?Where do they live?Examples:
Obilia
Polyp Medusa
Physalia
Class ScyphozoaMovementBody formWhere do they live?Organs?Examples:
Aurelia
Cassiopeia
Class CubozoaMovementBody formWhere do they live?Characteristics?Examples:
Class AnthozoaMovementBody formWhere do they live?Examples:
Exist in three subclasses▪ Subclass Hexacorallia▪ Subclass Ceriantipatharia▪ Subclass Octocoral
Hexacorallia
Ceriantipatharia
Octocorallia
Sponges and Cnidarians in BiosphereHuman Uses
Bioindicators:▪ Sponges
▪ Filter ▪ Pollutants
▪ Corals: ▪ sensitive to
Help protect
Sponges and Cnidarians in Biosphere Biomedical/Pharmaceutical industry1. ?2. ?
Consumer products1. ?2. ?
Sponges and Cnidarians in BiosphereIn the Environment
Form of Many symbiotic relationships Corals and Sponges
▪ The most abundant▪ Base of▪ May be used as
▪ Ex:
Sponges and Cnidarians in BiosphereOther relationships
Cnidarians with (protists)—▪ Form
Homes for▪ use sponges as
homes▪ Coral reefs provide
Sponges and Cnidarians in Biosphere
Protection Fish use (Ex:
) Coats itself with from sea
anemone,▪ Therefore the sea anemone does not▪ Tentacles protect