Pertanyaan

The outer cell layer in sponges is A. spongin. B. collagen. C. pinacoderm. D. mesohyl or mesenchyme.

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Jawaban

### C. pinacoderm.

Penjelasan

## Step1: Identify the outer cell layer in sponges### Sponges have a structure composed of different layers of cells. The outer layer of cells is known as the pinacoderm.## Step2: Eliminate incorrect options### Spongin and collagen are types of proteins, not cell layers. Mesohyl or mesenchyme refers to the gel-like matrix within the sponge, not the outer layer.