Sponge Choanocytes Collect Food Particles,but There Is No Food Distribution

question 28

Multiple Choice

Sponge choanocytes collect food particles,but there is no food distribution system within a sponge; how might surface cells receive nourishment?

• A) They do not; surface cells die and are regularly replaced by cell division of nourished choanocytes.
• B) Nutrients must diffuse from the choanocytes to surface cells.
• C) Amoebocytes transfer food from the choanocytes to the nonfeeding cells.
• D) Nutrient-rich choanocytes periodically fuse with nonfeeding cells, transferring nutrients as the cytoplasm mixes.

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Definitions:

Dimensions

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Previous Point

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Dimensioning

The practice of specifying part sizes, shapes, and features on technical drawings or CAD models, including dimensions, tolerances, and other critical specifications.

Two-Axis

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