Chapter 6 - Plant nutrition

TYPES OF NUTRITION

• Nutrition is taking in useful substances. 
• Green plants make their own food; they use inorganic substances - carbon dioxide, water and minerals - from the air and soil. 
• Substances made by living things are said to be organic. 

PHOTOSYNTHESIS

• photosynthesis= the process by which plants manufacture carbohydrates from raw materials using energy from light. 
• Chlorophyll is the pigment which makes plants look green. It is kept inside the chloroplasts of plant cells. 

LEAVES

• The epidermis cells protect the inner layers of cells in the leaf. 
• Cuticle is the waxy substance, secreted by the upper epidermis, that helps stop water evaporating from the leaf. 
• In the lower epidermis, there are small openings called stomata. 
• Guards cells do contain chloroplasts. 
• The mseophyll is the middle layers of the leaf. These cells ALL contain chloroplast. 
• Veins run through the mesophyll. 

• Leaves are adapted to obtain carbon…