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15 Cards in this Set
- Front
- Back
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How does transpiration pull work?
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pulls the water up through the plant to evenly distribute it.
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What is the cell theroy?
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all things are made up of cells. cells are the smallest unit of life. all cells are produced from presexisting cells.
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What are active transport and diffusion and how do the differ?
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active transprot is moving particles against the concentration gradient. diffusion is moving paritcles from high concentation to low concentration with the concentration gradient. Active transport requires energy.
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What are 3 examples of specialization in plants?
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Root hairs, guard cells and cuticle.
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What is hypertonic, hypotonic and isotonic?
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hypertonic is a solution that has a higher solute concentration than the other solution. Hypotonic is a solution that has a lower solute concentration that the other solution. Isotonic is when the solute concentration is the same a the other solution.
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What happens when the cell increases in size?
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more molecules need to be transported across the cell.
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what is phototropism and gravotropism?
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a plants responce to a light stimulus.
a plants responce to the gravitational pull. |
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What is a meristem?
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area where rapid cell division occurs.
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What is the difference between exocytosis and endocytosis?
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exo. is when the plant rids itself of waste. endo. is when the plant lets things in.
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What is one disadvantge of electron microscopes?
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the specimen is dead.
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What is spontaneous generation? Who disproved it?
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Louis Pastuer. The belief that life can spontaneously occur.
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This uses glucose to create chemical energy.
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cellular respiration
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What are the 3 main layers of a plant?
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dermal tissue, ground tissue and vascular tissue.
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What is the difference between spongy mesophyll tissue and palisade tissue?
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smt are loosly packed cell responcible for the exchange of gases. pt are tightly packed cells which are the sites of photosythesis.
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What is the endoplasmic recticulum? What are the 2 different types?
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tubes that transport things in the cell. smooth and rough
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