Name the 3 classes of sponges?

Calcarea, Hexactinellida, Demospongae

Hydrozoa, Calcarea, Demospongae

Check all that apply for the Phylum Porifera

Trap food particles in mucus choanocyte collar and are then endocytosed

Carry out gas exchange and distribution of nutrients and gases by diffusion

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1Name the 3 classes of sponges?
1. AHydrozoa, Calcarea, Demospongae
2. BAnalopa, Scyhpozoa, Cydippida
3. CCalcarea, Hexactinellida, Demospongae
2Which is a sponge made up of silicon spicules, and a collagen network?
1. AHexactinellida
2. BDemospongae
3. CCalcarea
3The middle layer of a sponge is called a mesohyl
1. AVerdadeiro
2. BFalso
4Check all that apply for the Phylum Porifera
1. ATrap food particles in mucus choanocyte collar and are then endocytosed
2. BHave gills for gas exchange
3. CExcrete uric acid
4. DExcrete ammonia
5. ECarry out gas exchange and distribution of nutrients and gases by diffusion
6. FProduce sexually
7. GAre mostly hermaphroditic
8. HAre made up of spicules
5Which classes of the Phylum Mollusca were examined?
1. APhylactolaemata
2. BMonoplacophora
3. CStenolaemata
4. DGastropoda
5. EAlpacophora
6. FAsteriodia
7. GBivalvia
8. HScaphopoda
9. IPolyplacophora
10. JCephalopoda
6Phylum Tardigrada have which type of skeleton which they use for locomotion?
1. AExoskeleton
2. BHydrostatic skeleton
3. CEndoskeleton
7Which Phylum does this organism belong to?
1. ASipuncula
2. BNemertea
3. CEchuira