Multiple choice

Amoeba removes its undigested food by ______.

  1. its anus

  2. rupturing its membrane

  3. vomiting

  4. all of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Amoeba, being a unicellular organism without specialized excretory structures, removes undigested food through rupturing of its cell membrane. When the food vacuole reaches the cell surface, the membrane breaks open to expel the waste, and the membrane quickly repairs itself.

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