Carbon Dioxide+Water-----> (in the presence of sunlight and chlorophyll) GLUCOSE +oxygen
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What conditions are needed for photosynthesis?
Water, energy (from sunlight), chlorophyll and Carbon dioxide
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What are the limiting factors of photosynthesis?
Temperature, light intensity and Carbon dioxide intensity
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What do plants use glucose for?
Respiration, converted to starch, cellulose (cell walls), oils (stored in seeds) (cell membranes) and amino acid (when combined with salts)
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Name the features of the structure of a leaf?
Wax cuticle, upper epidermis, palisade layer, spongy mesophyll layer, lower epidermis containdng stomata and guard cells and wax cuticle.
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Where is the xylem found and what does it do?
In the middle of the root or stem. (made of dead cells and walls stiffened with lignin) It transports water and nutrient through the plant by transpiration.
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What is transpiration?
The process in which water is pulled up the stem. Water is lost from the leaves through the stomta by evaporation. Water molecules stick together so they are pulled up the xylem in a constant stream.
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What environmental factor affect the rate of tanspiration?
Humidity, air movemet and temperature.
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What is the function of stomata?
Stomata allow gas exchange and water loss.
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What is the function of guard cells?
Guard cells cause the stomata to open and close to regulate transpiration and allow gas exchange.
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How is water absorbed by the root?
Water is absorbed by th root hair by osmisis. The soil water is a dilute solution and the cell sap is more concentrated so the water molecules move throught the cell's partially permeable membrane. This continues through the cells, water enters xylem
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What is the advantage to the plant of the root hairs?
The root hair provides a larger surface area for the absorption of water and minerals.
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What is the role of the phloem?
The phloem transports sucrose from photosynthetic areas of the plant to cells for respiration or storage as starch/
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What is nitrogen needed for in the plant?
Nitrogen (nitrates) is neede for making proteins.
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What are th main plant nutrient deefficiency symptoms?
Lack of nitrates= poor growth, Lack of potassium= yellowing of leaves, lack of phosphates= poor root growth
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What are KPN fertilisers used for?
To supply plants with all of the esssential nutrients and ensure healthy growth.
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What does sodium hydroxide do?
absorbs carbon dioxide/
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What does sodium bicarbinate do?
produce carbon dioxide.
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How can you test a leaf photosynthesis?
Iodine in potassium iodide (turns blue -black if starch is present)
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How are mineral taken up by the root?
By active transoport. (which is an active process so requires energy)
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What is water needed for in the plant?
Photosynthesis, trnasport of sucrose and minerals and support.
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Other cards in this set
Card 2
Front
Water, energy (from sunlight), chlorophyll and Carbon dioxide
Back
What conditions are needed for photosynthesis?
Card 3
Front
Temperature, light intensity and Carbon dioxide intensity
Back
Card 4
Front
Respiration, converted to starch, cellulose (cell walls), oils (stored in seeds) (cell membranes) and amino acid (when combined with salts)
Back
Card 5
Front
Wax cuticle, upper epidermis, palisade layer, spongy mesophyll layer, lower epidermis containdng stomata and guard cells and wax cuticle.
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