Multiple choice

Which leaf cells are irregular shapes?

  1. Upper epidermis

  2. Palisade mesophyll

  3. Spongy mesophyll

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

Spongy mesophyll cells are loosely packed and have highly irregular shapes to create air spaces for efficient gas exchange within the leaf. In contrast, palisade mesophyll cells are regularly shaped column-like cells, and epidermal cells form a continuous, tightly-packed protective layer.

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