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SBS Plant Processes
vocabulary and concepts for photosynthesis, respiration, and tropisms
| Question | Answer |
|---|---|
| small openings on the epidermis that allow gas exchange | stomata |
| green pigment found in chloroplasts that capture light energy for photosynthesis | chlorophyll |
| food making process of plants; chlorophyll traps light energy and sugars are produced | photosynthesis |
| reactions that need light-the breaking down of water molecules | light dependent reactions Stage 1 of photosynthesis |
| do not need light-the formation of glucose molecules | light independent reactions Stage 2 of photosynthesis |
| 6CO2 + 6H20 + light -----> C6H1206 + 6O2 | equation for photosynthesis |
| C6H12O6 + O2 ----> 6Co2 + 6H2O + energy | reaction for respiration |
| 1) produces food; 2) removes carbon dioxide and adds oxygen to the atmosphere | Why is photosynthesis important? |
| autotroph | producers; create their own food in the form of glucose |
| heterotroph | an organism that cannot make its own food. |
| reactants of photosynthesis | carbon dioxide and water |
| products of photosynthesis | glucose and oxygen |
| Stage 1 of photosynthesis | water is split into hydrogen and oxygen gas in the presence of light |
| Stage 2 pf photosynthesis | Hydrogen gas from stage 1 and carbon dioxide react to produce glucose |
| Where do plants get the water needed for photosynthesis? | the roots take in water from the ground |
| Where do plants get carbon dioxide for photosynthesis? | the air |
| Where do plants get the energy needed to perform photosynthesis? | The energy comes from sunlight |