Flashcards
Food and Chemical Co-ordination
Flashcards do conjunto (8)
- 1Process of photosynthesisThe leaves of the plant make glucose and from CO2 and water by using light energy. This energy is captured by chlorophyll inside the chloroplasts of the leaves and converted to chemical energy in the glucose.
- 2Equations for photosynthesisCarbon dioxide + water --> Glucose + oxygen
6CO² + 6H²0 --> C6H12O6 + 6O² - 3Simple controlled experiments for light, CO2 and chlorophyll in leaves. Experiment to show presence of oxygen.Light: Cover part of a leaf so it isn't exposed to light.
CO2: Remove the CO2 from the air around a plant using soda lime.
Chlorophyll: Use a variegated leaf
Oxygen: Use Canadian pond weed in bright light and capture the gas created. - 4Adaptations of the leafThe leaves are this and flat so that as much light as possible can be absorbed and the gases have to diffuse a very short distance.
- 5Importance of OsmosisCell surface membrane is partially permeable. The plant cell is turgid, this turgor is very important so that the plant cells can support the structure of the plant.
- 6Xylem and Phloem functionsXylem: Tissue made up of the cell walls of dead cells. It transports water and mineral ions up from the roots to the rest of the plant.
Phloem: Tissue made of living cells. It transports sugars for energy and amino acids for cell building. - 7TranspirationWater leaves the leaf as water vapour through the stomata. It evaporates from the surface of the cells in the mesophyll, which cools down the leaf.
- 8TropismsLight: Phototropism
Gravity: Geo tropism
Water: Phototropism
In positive tropism, growth is towards the direction of the stimulus. In negative tropism, growth is away.
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- Flashcards for revision for biology GCSE - PLants' Food and Chemical Co-ordination
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- 2nd Synergy
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