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Phylum Porifera

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Total cards: 21•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (21)

#1
Front (Question)

Habitat

Back (Answer)

Most marine and brackish Some freshwater

#2
Front (Question)

Tissues

Back (Answer)

Not embryonic, so no true tissues Specialized cells

#3
Front (Question)

Symmetry

Back (Answer)

Asymmetric

#4
Front (Question)

Mobility

Back (Answer)

Mobile larve Sessile adults

#5
Front (Question)

Organs

Back (Answer)

No organ system 2 cell layers cover Skelton Amoebiod

#6
Front (Question)

Skeleton composition

Back (Answer)

Silica Calcium carbonate Protein spongin

#7
Front (Question)

Nutrition

Back (Answer)

Filter feeders (choanocytes) Intracellular digestion

#8
Front (Question)

Sponge openings

Back (Answer)

Ostia (in) -pores Osculum (out) - main opening

#9
Front (Question)

Reproduction

Back (Answer)

Monoecious hemaphrodites. Males and female sex organs No genetic variation

#10
Front (Question)

Gemmules

Back (Answer)

Granules covered in spicules Provide environmental resistance Demosponges

#11
Front (Question)

Where is the egg is produced?

Back (Answer)

Ameobocyte

#12
Front (Question)

What lines the inside if the sponge?

Back (Answer)

Choanocytes Microvilli draw food and water through the sponge

#13
Front (Question)

What cells protect outside?

Back (Answer)

Flattened epithelial cells

#14
Front (Question)

Choanoflagellates

Back (Answer)

Eukaryotes similar to sponges Collard flagellates with choanocytes

#15
Front (Question)

Nervous system

Back (Answer)

No

#16
Front (Question)

Jelly filling that provides structure

Back (Answer)

Mesophyl

#17
Front (Question)

Spicules

Back (Answer)

Support, protection, and locomotion Glass, silica, or calcium carbonate

#18
Front (Question)

Class Hexactnellida

Back (Answer)

Glass (silica) sponges No spongin

#19
Front (Question)

Class calcarea

Back (Answer)

Calcareous sponges composed of calcium carbonate. No spongin

#20
Front (Question)

Demosponges

Back (Answer)

Have spongin and spicules

#21
Front (Question)

Sclerospongin

Back (Answer)

Coralline sponges Layered calcium carbonate