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5th SW 3 week test
5th six weeks 3 week test
Question | Answer |
---|---|
What are the reactants of photosynthesis? | water and carbon dioxide |
What are the products of photosynthesis? | glucose and oxygen |
What is the gas produced by plants? | oxygen |
Where is light energy converted to chemical energy? | in the leaf |
What happens to light energy when it is absorbed into the leaf? | a chemical reaction takes place |
What is chlorophyll? | the pigment in a plant cells that helps the plant make its own food (glucose) |
The energy from the sun enters the plant as ___ energy and is converted into ___ energy. | light; chemical |
What is the word equation for photosynthesis? | carbon dioxide, water and light energy react to form glucose and oxygen |
What is the equation for photosynthesis? | H2O + CO2 + light energy --> C6H12O6 + 6O2 |
Where is the chemical energy stored in plants? | chloroplasts |
What do all plants have in common? | they are all producers |
What is turgor pressure? | the outward pressure in the vacuole of a plant cell. |
What happens to a plant's cells when it is wilting? | the vacuole has lost water. |
What internal structure in a plant transports water from the roots to the leaves? | xylem |
What internal structure in a plant transports nutrients from the leaf to the rest of the plant? | phloem |
Why do some plants have thorns? | to protect against being eaten |
Why do some plants have colorful flowers? | to attract pollinators |
Why do some plants have bulbs? | to store energy for later use |
Why do some plants have very lightweight parts that will fly away in the wind? | so they are able to use the wind to carry the seeds to be planted in a different location |
What is geotropism? | response to gravity (roots grow down, stems grow up) |
What is thigmotropism? | response to touch (vines attaching to limbs, fences, etc.) |
What is phototropism? | response to light |
What is hydrotropism? | response to moisture or water |
Why do some plants have leaves in the form of spines? | to reduce the amount of water that is lost |
What will increase turgor pressure? | providing a plant with water |
A plant that grows toward the sunlight is responding to what? | an External stimulus. The sun |