Biology · Life Processes - Respiration
Many unicellular aquatic organisms like Chlamydomonas live in water. How do they primarily obtain oxygen for respiration?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1They rely solely on anaerobic respiration.
- 2They absorb dissolved oxygen from water via simple diffusion.✓
- 3They have tiny openings called spiracles to take in gases.
- 4They store oxygen evolved via photosynthesis in their vacuoles.
Correct answer
They absorb dissolved oxygen from water via simple diffusion.
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