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Biology - Photosynthesis Revision - Coggle Diagram
Biology - Photosynthesis Revision
Specifications
Process of photosynthesis
Conversion of light energy to chemical energy
Word equation and the balanced chemical symbol equation for photosynthesis
Carbon dioxide concentration, light intensity and temperature affect the rate of photosynthesis
Describing the structure of a leaf
Adaptations for photosynthesis
Plant growth - mineral ions
Magnesium ions for chlorophyll
Nitrate ions for amino acids
Practical - investigating photosynthesis
Levels of Organisation
Organelles - Cell structure that is specialised to carry out a particular function or job within the cell
Cells - Basic structural and functional unit of a living organism
Tissues - Group of cells with similar structures, working together to perform a shared function
Organs - Structure made up of a group of tissues, working together to perform specific functions
Organ systems – Group of organs with related functions, working together to perform body functions
Organism - An organism is an individual animal, plant, or single-celled life form.
Types of cells and tissues found in leaves
Epidermis - To allow more light to reach the palisade cells
Palisade mesophyll - To absorb all the available light
Spongy mesophyll - Air spaces allow carbon dioxide to diffuse through the leaf
Cuticle - To protect the leaf from infection and prevent water loss without blocking out light
Vocab
Chlorophyll - The green chemical in chloroplasts that captures light energy for photosynthesis
Chloroplast - An organelle found only in plant (and some protoctist) cells where takes place in the cell
Glucose - A simple sugar
Sucrose - A form in which carbohydrates are stored for energy in plants
Starch - A form in which carbohydrates are stored for energy in plants
Epidermis (lower and upper) - The layer of cells on the outer surface of a leaf
Palisade (mesophyll) cells - Cells in the upper part of a leaf that contain the most chloroplasts and carry out most of the photosynthesis
Spongy mesophyll cells - The layer of cells in the lower part of the lead where there are many air spaces, so allowing the movement of gases, carbon dioxide and oxygen within the leaf
Stomata (singular cells) - Tiny holes in the surface of a leap (mostly the lower epidermis) which allow gases to diffuse in and out
Guard cells - Cells that open and shut stomata
Xylem - Tubes, formed from dead cells in the vascular bundles of a plant, which carry water and dissolved substances from the roots to the leaves and other parts of the plant
Phloem - Tubes formed from many living cells that carry dissolved substances, such as sucrose and amino acids
Veins (vascular bundles) - Another word for a plant vascular bundle
Limiting factor - A factor that controls the rate of photosynthesis, it is the condition that is the least favourable
Mineral ions - Nutrients that plants and animals need in small amounts