B4c - Revision cards 0.0 / 5 ? BiologyThe leafGCSEOCR Created by: tjgrimshaw22Created on: 28-10-16 14:48 Name the five parts of a leaf? • cuticle • upper and lower epidermis • palisadeandspongy mesophyll layers • stomata and guard cells • vascular bundle 1 of 3 How are leaves adapted for efficient photosynthesi Broad so large surface area Thinso short distance for gases to diffusion Contain chlorophyll and other pigmentsto absorb light from different parts of spectrum Have a network of vascular bundles for support and transport Guard cells which open and close the stomata 2 of 3 How is the cellular structure of the leaf adapted • epidermis is transparent • palisadelayer at the top containing most of the chloroplasts • air spaces inthe spongy mesophyll allow diffusion between stomata and photosynthesising cells • internals urface area/volume ratio very large. 3 of 3
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