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40 Cards in this Set
- Front
- Back
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tiny cell structures containing a green pigment called chlorphyll
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chloroplasts
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uses the sun's light energy to change 2 substances into food
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chlorophyll
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the two substances turned into food
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carbon dioxide and water
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makes food for the plant
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leaves
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a form of sugar
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glucose
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outer covering of a tree
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bark
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protects the tree from disease and from drying out
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bark
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cambium
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thin growing layer of living cells
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heartwood
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the very center of a tree
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Why do plants need to trap energy?
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they can't move around to find food
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green pigment that collects light from the sun and stores it as food energy
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chlorophyll
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a gas that is found in the air
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carbon dioxide
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how carbon dioxide enters the the plant
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through tiny holes on the underside of the leaves
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how water enters the plant
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through the roots
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how water gets from the roots to the stem and leaves
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conducting tissue
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the food produced y a plant
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glucose
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the process of using light energy to combine carbon dioxide and wter to produce glucose
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photosynthesis
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means light
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photo
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synthesis
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means joining together
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waste product produced during photosynthesis
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oxygen
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how oxygen leaves plants
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through tiny holes through which the carbon dioxide enters
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at night or on cloudy days
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when photosynthesis can't take place
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why plants store food
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they can't always make it
(for ex., night, cloudy days, drought) |
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how extra glucose is stored
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as starch
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a chemical that is a chain of sugar molecules
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starch
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where starch is stored
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leaves (lettuce)
leaf stalks (celery) roots (carrots) underground stems (white potatos) |
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what energy is used for
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to grown
produce seeds live |
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what releases the energy found in food
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oxygen
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cell respiration
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the process of releasing energy found in food
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the Earth's producers
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photosynthetic organisms - mostly plants
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reasons plants are so important
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food
give off oxygen (21% of air) - we need oxygen to release energy from food to grow and live |
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what plants combine duing photosynthesis
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light and carbon dioxide
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the way oxygen was created and led to animal life
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bacteria on the oceans carried on photosynthesis and oxygen plants expelled began to collect in the air - when enough oxygen was in the air, animal life began
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phytoplankton
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evolved from bacteria - now produces about 70 % of the oxygen humans and animals breathe
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30%
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the amount of oxygen produced by plants living on the land
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21%
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the amount of oxygen we need to have in the atmosphere in order to breathe
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cell respiration
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the process of using oxygen to release the energy in food in a usable form
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another word for breathing
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respiration
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the use of xoygen to break down glucose
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cell respiration
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waste products of cell respiration
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water and carbon dioxide
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