Final Answer:
TRUE: No true tissues, Asymmetrical, Most are sessile, Aquatic mainly marine, Body has an endoskeleton made up of spicules or spongin, Hermaphrodites
FALSE: No body cavity, Have three germ layer, Dimorphism life cycle
B. Labeling (from top to bottom in the magnified cross-section, left to right as shown):
- Top blank (next to “Water out” arrow): Osculum
- Right column, top blank (in sponge wall, outermost layer): Epidermal cell
- Second blank down (layer just inside epidermis, with collar cells): Collar cell
- Third blank down (inner layer, amoeba-like cells): Amoeboid cell
- Bottom blank (pointing to the free-swimming cell with flagellum): Spicule
- Bottom-most blank (label under the free-swimming cell): Pore
(Note: The “Sponge wall” label points to the whole layered structure; the four blanks on the right correspond to layers/cells from outside inward: Epidermal cell → Collar cell → Amoeboid cell → (spicules embedded in mesohyl, but “Spicule” is placed separately as a structure; the last blank under the detached cell is “Pore”, though strictly the pore is the opening—however, based on standard diagram matching and given word bank, this is the intended pairing.)
Parent Tip: Review the logic above to help your child master the concept of porifera worksheet.
