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Science: Biology
2.2.1 Plant Tissues and Organs
Exam Board: AQA
The Leaf
The Leaf — A Photosynthesis Factory
Contains:
• Epidermis
• Palisade mesophyll
• Spongy mesophyll
• Xylem & phloem
• Stomata (gas exchange holes)
• Guard cells (control stomata opening)
Diagram Required
How Plant Tissues Are Adapted
Phloem transports food. Xylem transports Xtra water.
Plant Organ System
Transport System = Roots + Stem + Leaves



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