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Stack #4641618
| Question | Answer |
|---|---|
| carries water and dissolved minerals from the soil | xylem |
| carries sugar from leaves to storage organs or areas of growth | phloem |
| the fluid transported by xylem and phloem in a plant | sap |
| True or False: The direction of sap flow is determined by a pressure difference between source and sink cells | True |
| the release of water through the leaves of a plant | transpiration |
| the rising of a fluid within a tube due to adhesion b/t the molecules of the fluid and the tube is called _____ action | capillary |
| the pressure exerted by water in a full central vacuole upon the cytoplasm and cell membrane of a plant cell | turgor pressure |
| True or False: The radicle of a plant exhibits negative gravitropism. | False |
| only flows upward | xylem |
| flows up and down | phloem |
| messenger molecules that are typically produced by one tissue to produce a response in other tissues | hormones |
| A plant growing toward the sun is exhibiting positive _______ | phototropism |
| a plant hormone that promotes cell elongation and lateral root development | auxin |
| suppresses cell division in the shoot | auxin |
| a plant hormone that promotes cell division and the development of lateral buds | cytokinin |
| vegetative propagation technique that splices a scion onto a stalk | grafting |
| works with auxins to control the growth and division of cells | cytokinin |
| plant hormone regulating many aspects of plant growth - stem elongation and cell division in shoots and leaves | gibberellin |
| plant hormone that acts as an inhibitor of other hormones and causes dormancy in buds and seeds | abscisic acid |
| gas; plant hormone that regulates the ripening of fruit, opening of flowers, and shedding of leaves | ethylene |
| responsible for a plant’s responses to stress | ethylene |
| directionally dependent growth response of plants to external stimuli - light, gravity, touch, and presence of water | tropism |
| water moves from the soil into a plant's roots through ____ pressure | osmotic |
| growth movement of a plant in response to light | phototropism |
| the growth movement of a plant in response to gravity | gravitropism |
| Adhesion helps water and minerals rise in xylem through _____ action | capillary |
| growth movement of a plant in response to touch, primarily found in climbing plants such as vines | thigmotropism |
| the growth movement of plant roots in response to the presence of water | hydrotropism |
| the response of a plant to changes in duration and intensity of light exposure | photoperiodism |
| plants that require a long period of darkness in order to flower | short-day plants |
| plants that require a short period of darkness in order to flower | long-day plants |
| a plant pigment that regulates a plant’s response to photoperiod changes | phytochrome |
| plants that flower independently of the photoperiod | day-neutral plants |
| any form of asexual reproduction in a plant is _______ propagation | vegetative |
| an organism that is genetically identical to the parent plant | clone |
| specialized stem structures that form new plants that take root some distance from the parent plant | stolons |
| underground buds; produce bulblets that become new plants | bulbs |
| underground stems that swell to store nutrients; produce new plants by sending out buds | tubers |
| underground stems; produce cormlets that become new plants | corms |
| a process in which a branch of the plant is bent to the ground and a portion of it is buried | layering |
| List four things that plants are commonly used for. | Clothes, medicine, food, and they produce oxygen |
| Explain the difference between nastic movement and tropism. | Nastic movement does not respond to touch by growing but moving while tropism has a growth response. |
| Explain the role that plants play in the water cycle. | Their roots soak up the water and then they use transpiration to release the water through their leaves. So basically they filter water. |
| Explain if scientific models like the pressure-flow hypothesis should be regarded as absolute truth. | No, it should not be regarded as absolute truth because it is known to be the best supported theory, which means in time this theory could be proven false. |
| Explain how according to the pressure-flow hypothesis plants move sugar through their phloem tissues. | First source cells use active transport to move sugars into the phloem. Then sink cells remove sugar molecules from the phloem through active transport. So overall they use active transport to move sugars. |
| Describe two problems associated with vegetative propagation. | There is a lack of genetic diversity between offspring because vegetative propagation produces clones. Disease can be easily transferred from one organism to its clone. |
| Explain how turgor pressure works. | Turgor pressure causes vacuoles to press cell membranes against cell walls which then gives plants rigidity. |
Created by:
LayneIS