Multiple choice

The vacuolar membrane is called

  1. plasmalemma

  2. middle lamella

  3. tonoplast

  4. chromoplast
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The vacuolar membrane is specifically called the tonoplast (Option C). It surrounds the vacuole and regulates transport of materials into and out of the vacuole. Plasmalemma (A) is another name for the plasma membrane (cell membrane). Middle lamella (B) is the pectin layer between plant cell walls. Chromoplast (D) is a type of plastid, not a membrane.

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