MCQ on Plant Hormones (Plant Physiology MCQ-03) Lecture Notes MCQ Biology Welcome to Plant Physiology MCQ 03 Plant Physiology Quiz on Plant Hormones This question set on Plant Physiology MCQ-03: Plant Hormones / Phytohormones consists of 15 questions in MCQ format. Please select the correct answer and at the end of the test, you have to click on 'SUBMIT' button to see your Score and the Correct Answers. Please click 'NEXT' button to start the quiz... 1. Gibberellic acid stimulates seed germination in monocots by the activation of digestive enzymes by acting on: Endosperm Aleurone layer Embryo Cotyledons2. The factor responsible for the formation of early embryonic axis during early developmental pathway of plants is: Morphogens Orientation of embryo sac Plane of Cell Division Auxin gradient3. Agrobacterium tumefaciens causes crown gall diseases in dicot plants. Which phytohormone genes are present on T‐DNA? Auxin only Auxin and cytokinin Cytokinin and brassinosteroids Cytokinin only4. Abscisic acid can be degraded by: Oxidation and conjugation Reduction and conjugation Light and oxidation Oxidation and reduction5. Among the following which is NOT involved in the plant defence signaling pathway? Ethylene Gibberelic acid Jasmonic acid Salicylic acid 6. Among the following which hormone can induce flowering in short day plants grown under long duration of light? Cytokinin Auxins Abscisic acid Gibberelic acid 7. Parthenocarpic tomato fruits can be produced by: Removing androecium of flowers before pollen grains are released Treating the plants with phenylmercuric acetate Raising the plants from vernalized seeds Treating the plants with low concentrations of gibberellic acid and auxins8. In tissue culture experiment to initiated shoots from the undifferentiated mass of cell the medium must contain: Low auxin and low cytokinin High auxin and high cytokinin High auxin and low cytokinin Low auxin and high cytokinin9. For the flower induction, the vernalization signal in plants is perceived mainly by: Shoot apical meristem Young leaves subtending the apical meristem All vegetative parts Mature leaves near the root shoot junction10. Which one of the following is NOT a plant hormone? Jasmonates Nitric oxide Polyamines Brassinosteroid11. Aspirin delays senescence in cut parts of the plant and keeps flower fresh for longer time. The effect of aspirin is By decreasing the synthesis of ethylene By increasing the synthesis of cytokinins By increasing the synthesis of abscisic acid By increasing the synthesis of gibberellic acid12. How does pruning help in making the hedge dense? It releases wound hormones It frees axillary buds from apical dominance The apical shoot grows faster after pruning It induces the differentiation of new shoots from the rootstock13. Treatment of seed at low temperature under moist conditions to break its dormancy is called: Scarification Stratification Chelation Vernalization14. The “Foolish Seedling” disease of rice led to the discovery of: GA 2, 4 – D ABA IAA15. A tryptophan auxotroph in corn showed 50 times more accumulation of IAA than the normal. The probable explanation for this is: IAA was not oxidized IAA is probably not inhibited by the feedback mechanism De-conjugation of ester linked IAA does not take place There may be some other precursors for IAA synthesisYou have reached at the End of this Quiz. Please Click 'SUBMIT' button to see your Score and the Correct Answers... Get our Updates on PLANT PHYSIOLOGY in your E-mail Inbox We will not spam your account… Enter your e-mail address Don’t forget to Activate your Subscription…. Please See Your E-Mail… More Plant Physiology MCQs Biology / Life Sciences MCQ: Plant Physiology MCQ-02 Plant Hormones / Phytohormones: Auxin, Cytokinin, Gibberellin, Abscissic Acid Etc.: Plant Physiology Multiple Choice Questions (Quiz) with answer Key for the Preparation of Competitive Examinations in Biology / Life Sciences such as CSIR JRF NET Life Science Examination, ICMR JRF Entrance Exam, DBT BET JRF Exam, GATE (XL) Life Science Exam, GATE (BT) Biotechnology Exam, ICAR JRF Exam, University PG Entrance Exam, JAM Exam, GS Biology Exam, GRE, Medical Entrance Examination, NEET Exam etc. Other resources from Easybiologyclass: | Lecture Notes | Video Tutorials | PPTs | Question Paper Bank | Biology MCQs | Mock Tests | Difference between… | Practical Aids for your preparation | Lecture Notes from Easy Biology Class… BotanyZoologyBiochemistryGeneticsMolecular BiologyBiotechnologyHuman PhysiologyPlant PhysiologyMicrobiologyImmunologyEmbryologyEcologyEvolutionBiophysicsResearch Meth.BiostatisticsChemistryPhysics Browse more in Easy Biology Class… Lecture NotesBiology PPTVideo TutorialsBiology MCQQuestion BankDifference betweenPractical AidsMock Tests (MCQ)Biology Exams Do you have any Queries / Comments? Please leave me in the Comments Section below. I will be Happy to Read your Comments and Reply. Please Share with your Friends, Relatives, Students and Colleagues… No related posts. Posted in Biochemistry, Biology MCQ, Physiology MCQ, Plant Physiology and tagged Physiology Online Test, Plant Hormones, Plant Physiology MCQ, Plant Physiology Mock Test, Plant Physiology Practice Questions.