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49 Cards in this Set
- Front
- Back
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carbon dioxide+water=glucose+oxygen
what is needed to make glucose and oxygen? |
Light and Chlorophyll
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what is an indicator for starch?
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Iodine
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What colour indicates that starch is present?
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Blue-Black
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What is the name of a leaf with two colours?
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Variegated
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More_____=more photosynthesis=more_____
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Light
Alkali |
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What does soda lime do?
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Absorbs Oxygen
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What does hydrogen carbonate do?
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Gives out CO2
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What needs to be produced for photosynthesis to take place?
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CO2
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Test for oxygen:
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A glowing splint relights
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Why would you add sodium bicarbonate?
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To give it more CO2
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What happens to the waxy cuticle when placed in hot liquid?
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Melts
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What is the boundary layer called?
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Epidermis mesophyll layer
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What does the spongy layer do?
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Absorbs and channels CO2 and stops water escaping
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What lets CO2 and O2 in and out of the plant?
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Stomata and guard cells
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What does photosynthesis in a plant do?
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Provides food for all animals
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Plant's trap the sun's energy and turn it into _____.
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Glucose
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Using the sun's energy and turning it into glucose is:
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Storing chemical energy
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Animals along the food chain use what energy to live and grow?
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Respiration
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Respiration uses up ______ and _____
and turns it into ______and ______. |
oxygen and glucose
carbon dioxide and water (other way round from photosynthesis) |
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The level of oxygen ______ in the daytime.
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Rises
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In the day, photosynthesis uses more oxygen than what?
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Than the plant's respiration uses up
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At night, oxygen levels _____.
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Fall
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At night, the plants respiration will use up all the oxygen because:
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No oxygen is being produced
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Level of carbon dioxide ____ during the day and _____ at night.
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Falls
Rises |
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Over time, C02 will fall steadily because plants do what?
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Use up more CO2 than they produce.
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Photosynthesis and Respiration are the _______ of each other.
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Opposite
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Where do plants make glucose?
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In their leaves
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Some glucose is used for what?
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Respiration
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What does respiration release?
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Energy
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Glucose is used to make more and more _______ to make more and more ________.
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Chlorophyll
Glucose |
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What is glucose converted into to make cell walls?
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Glucose
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What can glucose be used for?
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Respiration
Chlorophyll Starch Cell walls |
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What are the colour pigments of a leaf?
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Green and yellow
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What is the green pigment in a leaf?
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Chlorophyll
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What is the yellow pigment in a leaf?
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Xanthophyll
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What pigment is most soluble in petroleum ether?
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Xanthophyll
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What do leaves need to make chlorophhyll?
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Starch and light
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What colour is the indicator of a plant with lots of sunlight?
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Yellow
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What colour is the indicator of a plant with little/no sunlight?
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Purple
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Where on the leaf are the "bubbles"?
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Lower surface
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Why do the bubbles on the leaf grow larger?
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Spongey layer absorbs water and expands, escaping through the stomata. The more that escapes, the larger they grow
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Where is carbon obtained from?
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Carbon dioxide
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Where is Hydrogen obtained from?
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Water
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Where is Nitrogen obtained from?
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Soil
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Where is Magnesium obtained from?
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Soil minerals
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Where is oxygen obtained from?
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Water
Air |
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What is rich in chloroplast, where photosynthesis occurs?
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Palisade layer
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What is the xylem for?
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to transport water from the roots to the leaves through tubes
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What is the phloem?
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Carries food and sugars from the leaf through a network
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