Rachel Romm Ms. Mackley Bio I H P5 19 December 2008 Structure of a Leaf Lab Analysis and Interpretation 1. How does the shape of a leaf help it use sunlight efficiently? Because a leaf is wide and thin, it exposes as much chloroplast containing cells to sunlight as possible. 2. Explain the function of the cuticle of the leaf. The cuticle is a waxy coating that prevents water loss. 3. Epidermal cells contain few chloroplasts. How does this affect the amount of sunlight reaching the mesophyll? Only a small portion of the sunlight is absorbed by the epidermal cells, the rest of the light pass into the mesophyll section and gets absorbed by the chloroplasts there. 4. In which layer of the mesophyll does more photosynthesis occur? Why? The layer in which the most photosynthesis occurs is the palisade because they are located on the top half of the leaf and receive the most sunlight. 5. What is the function of the air space in the spongy mesophyll? The function of the air space in the spongy mesophyll is to circulate carbon dioxide.
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This note was uploaded on 03/25/2010 for the course BIO 5381 taught by Professor Smith during the Spring '10 term at N. Arizona.