Question
7. Categorize all the components involved in photosynthesis as either matter or energy. Model 2 - Cross Section of the Internal Structure of a Leaf 8. List the layers of the leaf starting at the upper cuticle all the way to the lower cuticle.
Answer
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Miranda
Master · Tutor for 5 years
Answer
7. - Sunlight (Energy)- Water (H2O) (Matter)- Carbon Dioxide (CO2) (Matter)8. - Upper Cuticle- Upper Epidermis- Palisade Cell Layer (Palisade Mesophyll)- Vascular Bundles (veins)- Spongy Mesophyll- Lower Epidermis- Stomata / Guard Cells- Lower Cuticle
Explanation
## Step 1Photosynthesis is a process that involves the conversion of light energy into chemical energy. The components involved in this process can be categorized into two groups: matter and energy.## Step 2The matter involved in photosynthesis includes water (H2O) and carbon dioxide (CO2). These are the raw materials that are transformed into glucose and oxygen.### **Matter**- Water (H2O): Water is absorbed by the plant from the soil and is used in the photosynthetic process.- Carbon Dioxide (CO2): Carbon dioxide is absorbed from the atmosphere through the stomata of the leaves.## Step 3The energy involved in photosynthesis is sunlight. Sunlight is the energy source that is captured by the chlorophyll in the leaves and is used to convert water and carbon dioxide into glucose and oxygen.### **Energy**- Sunlight: This is the energy source that is absorbed by the chlorophyll in the leaves.## Step 4The leaf structure can be divided into several layers, starting from the upper cuticle and reaching down to the lower cuticle.### **Layers of the leaf**- Upper Cuticle: This is a waxy, water-resistant layer that covers the epidermis and reduces evaporation.- Upper Epidermis: This is the outer layer of cells that line the leaf.- Palisade Cell Layer: This layer of elongated cells is packed with chloroplasts where most photosynthesis occurs.- Vascular Bundles (veins): These structures contain xylem and phloem, which transport water, nutrients, and the sugars produced by photosynthesis throughout the leaf and to the rest of the plant.- Spongy Mesophyll: This layer has spaces among the cells that allow for gas exchange.- Lower Epidermis: This is the lower outer layer of cells.- Stomata/Guard Cells: These are located usually on the lower epidermis and regulate gas exchange through small openings called stomata.- Lower Cuticle: This is the same as the upper cuticle.