Biology · Zoology
What is the primary diagnostic feature of the phylum Porifera?
- 1They possess a well-defined chitinous exoskeleton.
- 2The body surface is perforated with numerous microscopic pores.✓
- 3Cells are highly organized into true organs and tissues.
- 4They are unicellular organisms.
Correct answer
The body surface is perforated with numerous microscopic pores.
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