Identify the only cells in leaf epidermis, which are NOT connected to other cells by plasmodesmata and are involved in photosynthesis.
Correct answer: C. Guard cells
- A. Epidermal cells
- B. Spongy mesophyll cells
- C. Guard cells
- D. Palisade mesophyll cells
Explanation
Guard cells, containing chloroplast, are a part of the leaf's epidermal layer ( the epidermis). They, indeed, do not have plasmodesmata (small channels that directly connect the cytoplasm of neighboring plant cells to each other). Spongy and Palisade mesophyll are not part of the epidermal layer and contain Plasmodesmata. Epidermal cells apart from guard cells are not photosynthetic.
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