Terms : Hide Images
| 138419146 | hormone | compound produced by one part of an organism that is transported and triggers a response in another part | |
| 138419147 | abscisic acid | produced in terminal bud, prepares plant for winter; closes stomata, inhibits growth | |
| 138419148 | oligosaccharins | plant defense against pathogens, cell growth and differentiation, flower development | |
| 138419149 | photoperiodism | detect time of year by the photoperiod, physiological response to night length, effects seasonal events such as flowering and seed germination | |
| 138419150 | phytochrome | Protein containing a chromophore responsible for a plant's response to the photoperiod | |
| 138419151 | turgor movements | Reversible movements caused by changes in turgor pressure | |
| 138419152 | phototropism | stimulus is light | |
| 138419153 | ethylene | gas, ripens fruit, leaf abscission, stimulus is shortening days/longer nights and cooler temps. (to a degree) | |
| 138419154 | sleep movements | lowering of leaves to vertical position in evening, raising leaves to a horizontal position in the morning, one side of plant is turgid while the other is flaccid | |
| 138419155 | short-day plants | night is longer than a critical length, flower in late summer, fall | |
| 138419156 | phytoalexins | *A class of compounds with antibiotic properties that are naturally produced by some plants to fight infections from fungus | |
| 138419157 | hypersensitive response | chemical signaling system to resist infection | |
| 138419158 | auxin | main site of production is the apical meristem, increases plasticity of cell wall, promotes elongation of shoots, promotes formation of adventitious roots & fruit growth | |
| 138419159 | senescence | *the organic process of growing older and showing the effects of increasing age | |
| 138419160 | circadian rhythms | 24-hour cycle, does not require environmental cues, light-dark cycle, entrained from environment; internally set | |
| 138419161 | long day plants | night is shorter than a critical length, flower in late spring, summer | |
| 138419162 | gene-for-gene recognition | Resistance to a disease depends on a precise match up between an allele in a plant and an allele in the pathogen | |
| 138419163 | cytokinins | anti-aging, stimulates cell division, activates proteins for mitosis, stimulates axillary bud growth | |
| 138419164 | tropism | Growth responses that result in curvatures of the whole plant toward/away from a stimulus | |
| 138419165 | gibberellin | Primarily produced in roots and young leaves, imbibition triggers its release, promotes internode elongation (stem elongation), promotes seed germination (breaks dormancy), places a role in fruit growth | |
| 138419166 | gravitropism | stimulus is gravity Positive -downward (roots) Negative -upward (shoots) | |
| 138419167 | day-neutral plants | unaffected by photoperiod, triggered by maturity | |
| 138419168 | thigmotropism | stimulus is touch | |
| 138419169 | stress | An environmental condition that can have an adverse effect on a plant's growth, reproduction, & survival |
