Auxin - Study guides, Class notes & Summaries

What is homeostasis? The maintenance of a constant internal environment. What is a stimulus? A change in your environment than requires a response. e.g Light, sound, touch, pressure, pain, chemical or temperature. What do the receptors do? Detect the stimulus or change in environment. What happens after the receptors? Receptors send messages to the CNS via the sensory neurone. What makes up the central nervous system? The brain or spinal cord What is an effector? Muscles or glands tha...

Auxin is a plant hormone produced in the shoot tip. Auxin causes cell elongation and travels down the stem from the tip. Auxin is destroyed by sunlight. Explain how this leads to positive phototropism in the plant. Correct Answer Auxin is broken down on the sunny side of the plant. Cells on the shaded side will elongate due to auxin, causing curvature of the stem so that the plant grows towards the light. Ivy plants often use walls or other plants as a support when growing. State the type of ...

what plant growth substances act synergistically in their effects on cell enlargement? - correct answer cytokinin + auxin explain how plants leaves detect changes in lengths of day and night? - correct answer day length detected by phytochrome 2 forms Pr + Pfr in light --> Pr absorbs red-light, converted to Pfr in dark, far red light Pfr absorbs --> Pr --> Pfr ---> Pr --> slow longer night = > conversion phytochromes build up according ...

What are target cells? - Answer Cells with receptor proteins on their cell surface membrane complimentary to the chemical What are meristems? - Answer Regions of actively dividing cells e.g. roots and shoots What do cytokinins do? - Answer promote cell division of stem and promote growth of lateral buds How do auxins cause cell elongation? - Answer Causes cell elongation by active transport of hydrogen ions into the cell walls, which lowers pH, making the cell walls flexible. Ce...

HORT 2050- Exam 3 LSU Questions And Answers Flower induction - ANS start of flowering process in response to certain stimuli (the shoot apical meristem becomes competent to develop flowers) Flower initiation - ANS change in the meristematic tissue from vegetative to reproductive What triggers induction and initiation in flower buds? - ANS -Photoperiod/phytochrome (length of exposure to light/ plant's reaction to it) -Vernalization (any temperature treatment that promotes ...

Florida Pesticide Law - Ch 487 FS What law controls rights-of-way? Enacted by FDACS to prevent sensitive crops and plants from injury Organo-Auxin Herbicide Rule c) restricted use pesticides A Right-of-Way Pest Control applicator is a person who applies: a) any type of pesticide b) pesticides that are toxic to honeybees c) restricted use pesticides d) pesticides that are not EPA-registered b) category certification standards The practical knowledge that Right-of-Way Pest Control appli...

Arborist Certification Study Guide with Complete Solutions Meristem Correct Answer-Sites of rapid cell division in the shoot tips, root tips, and cambium. Apical meristem Correct Answer-Meristems located at the end of the shoot are called primary, or _________ meristems Scales Correct Answer-Buds are covered by _____________ that leave permanent scars on the twig when the buds break dormancy. These scars can be useful in tree ID. Apical dominance Correct Answer-The tendency for termina...

compound interest - 30 60 90 triangle 45 45 90 triangle - Solubitlity Rules - 1) group 1, NO3-, NH4+, ClO4-, C2H3O2- (acetate) soluble salt 2) Most Ag+, Pb2+, Hg2 (2+) salt insoluble (exept when paired with above). Plant Hormones (A CAGE) - Auxin / IAA (indoleacetic acid): plant growth, elongation, phototropism Cytokinin: stimulates cytokinesis Abscisic Acid (ABA): growth inhibitor. delay growth. Gibberellins: cell growth Ethylene: gas, ripen fruit and leaf abscissionAnterior Pituita...

1 BIOS 1108 MODULE 3 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Cell Signaling Pathway Correct Answer: "RaceCAR" - Reception of signaling molecule (ligand) to specfiic receptor - protein-to-protein Communication (transduction); ex: receptor-to-enzyme, kinase-totarget -signal Amplification typically with second messengers (cAMP, etc) -sgnal response nuances: tissue/cell-type specific responses, signal crosstalk Direct Signaling Correct Answer: communicati...

DAT FINAL EXAM STUDY REVIEW TEST. compound interest - CORRECT ANSWER 30 60 90 triangle 45 45 90 triangle - CORRECT ANSWER Solubitlity Rules - CORRECT ANSWER 1) group 1, NO3-, NH4+, ClO4-, C2H3O2- (acetate) soluble salt 2) Most Ag+, Pb2+, Hg2 (2+) salt insoluble (exept when paired with above). Plant Hormones (A CAGE) - CORRECT ANSWER Auxin / IAA (indoleacetic acid): plant growth, elongation, phototropism Cytokinin: stimulates cytokinesis Abscisic Acid (ABA): growth inh...