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Which of the following statements is accurate regarding plant tissues and their characteristics?

1. Guard cells are distinct from epidermal cells because they contain chloroplasts.
2. The cell walls of guard cells are uneven, with thicker inner walls compared to thinner outer walls, while epidermal cells have uniformly thin walls.
3. Leaves of sorghum lack palisade parenchyma tissue.
4. Palisade parenchyma consists of elongated cells rich in chloroplasts, with their long axes oriented perpendicular to the leaf surface.

Correct answer: Leaves of sorghum lack palisade parenchyma tissue.

Solution

Palisade parenchyma is typically absent in monocot leaves like sorghum, as their mesophyll is not differentiated into palisade and spongy parenchyma. This makes option C correct.

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