a) isopentanyl adenine. They stimulate cell division. In Which of the following are plant growth promoters? 900+ VIEWS. auxin ethylene gibberellins cytokinin ...” in Biology if the answers seem to be not correct or there’s no answer. Explain the physiological effects of cytokinin. Question 43. has an extracellular region, a transmembrane region, and a cytoplasmic region. The first natural cytokinin isolated from liquid endosperm was. The function of cytokinins is to increase the cell division by stimulating the process of mitosis which helps in plant growth and formation of shoots and buds. Which of the following is a cytokinin ? a) cytokinin b) auxin c) abscisic acid d) ethylene e) gibberellic acid Answer (d) Abscisic acid. Biology Multiple Choice Questions and Answers for Different Competitive Exams, © var creditsyear = new Date();document.write(creditsyear.getFullYear()); c. Plant hormones are produced in very small concentrations. 2:13 1.6k LIKES. 10. Which Auxin. Try a smart search to find answers to similar questions. 29.Which of the following hormone is concerned mainly with root initiation? It is produced in the stem tips, buds and root tips to promote growth and it also helps to repair wounds in plants. Which of the following statements about cytokinins is FALSE? (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid (d) Abscisic acid. Cytokinins inhibit cell division. Made in the roots (also seeds and fruits), cytokinins travel up the xylem and promote lateral growth. Which of the following is an antigibberellin. 2:13 1.6k LIKES. Which of the following is a cytokinin ? It is known as zeatin (6-hydroxy 3-methyl trans 2 … This relationship persists in tissue culture. The of the following is a natural cytokinin, 3. d. They are found primarily in actively dividing tissues and in root tips. Folke Skoog discovered their effects using coconut milk in the 1940s at the University of Wisconsin–Madison. (a) cytokinin (b) gibberellic acid (c) auxin (d) anti-gibberellin . Answer: A Topic: 33.3 Skill: Conceptual Understanding 9) When a nursery worker pinches off the terminal buds on a young chrysanthemum plant to make it grow bushy, which of the following plant hormones is mainly responsible for growth of side branches? Answer: d. 8. Which of the following is not a plant hormone? 300+ VIEWS. Cytokinins are a class of plant growth substances that promote cell division, or cytokinesis, in plant roots and shoots. Cytokinin degradation in plant cells is significantly enhanced in vivo after their exposure to exogenous cytokinins [156,157]. by auxin. first natural cytokinin isolated from liquid endosperm was, 6. Cytokinin, any of a number of plant hormones that influence growth and the stimulation of cell division. 3. C. ABA. 200+ VIEWS. The first natural cytokinin was obtained from unripe maize grains or kernels by Letham (1964). So the correct answer is 'Apical dominance'. (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid (d) Abscisic acid. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. They move upward in the xylem (woody tissue) and pass into the leaves and fruits , where they are required for normal growth and cell differentiation. 1) Which of the following is a naturally occurring cytokinin in plants? Answer. It is called kinetin (6-furfuryl amino-purine). (A) Insulin (B) Thyroxin (C) Oestrogen (D) Cytokinin. Which 600+ SHARES. 2:13 1.6k LIKES. Since auxins travel down from the growing tip and act to suppress lateral growth, these two types of hormones strike a balance. Which of the following is one adaptive advantage for deciduous plants that lose their leaves during the winter? 300+ SHARES. Cytokinin response factors and abiotic stress. 1:52 100+ LIKES. The first natural cytokinin of plants is 1:50 800+ LIKES. Find an answer to your question “Which of the following plant hormones is a gas? It helps in ripening of fruit. Cytokinins are synthesized in the roots and are usually derived from adenine . Q. of the following is the precursor of cytokinins, 7. Select the correct response: cytokinin abscisic acid ethylene gibberellin auxin Indoleacetic acid (IAA) is the most commonly occurring form of which plant hormone? 200+ SHARES. a) indoleacetic acid (IAA) b) benzyladenine (BA) Identify the cytokinin given below (a) IAA (b) Zeatin (c) Kinetin (d) None of these (c) Kinetin. ashish2386 ashish2386 Answer: answer is b ascorbic acid . of the following hormone is involved in counteracting apical dominance induced It helps shoot to bend towards light. Cytokinin. 200+ SHARES. View All. Correct answers: 1 question: Which of the following is a function of cytokinin in plants? The Cytokinin degradation in plant cells is significantly enhanced in vivo after their exposure to exogenous cytokinins [156,157]. It promotes cell division in areas of rapid cell growth. c. Kinetin is a naturally occurring cytokinin. Cytokinins promote sprouting of lateral buds and overcome apical dominance. Cytokinin and auxin are antagonistic for apical dominance. Most of the control mechanisms depend directly on the concentration and/or compartmentation of the cytokinins in the cell. (a) cytokinin (b) gibberellic acid (c) auxin (d) anti-gibberellin . Correct answers: 1 question: Which of the following is a function of cytokinin in plants? View solution. Which of the following is cytokinin? Which of the following is cytokinin? auxin ethylene gibberellins cytokinin ...” in Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions. a) cytokinin b) gibberellic acid c) abscisic acid d) ethylene e) auxin 2) Cytokinin is primarily responsible for increasing which cellular process? It helps shoot to bend towards light. 1:52 100+ LIKES. 200+ VIEWS. a) indoleacetic acid (IAA) b) indolebutyric acid (IBA) c) zeatin d) ethephon e) benzyladenine (BA) 2) Which hormone is synthesized in the young leaves around the shoot tip? a. Cytokinin - cell division b. Auxin - stimulates stem elongation c. Gibberellin - releases seeds from dormancy d. Abscisic acid - releases buds from dormancy e. Ethylene - latex production (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid. d. a cytokinin Which of the following statements about plant hormones is true? Though first discovered as being a part of the cytokinin signaling cascade, CRFs have been increasingly identified as being key TFs in abiotic stress response, including response to oxidative, cold, salt, drought, and flooding stress [5,7,9,10,12,23; Fig. It is a synthetic hormone. Which is not a function of cytokinin ? It promotes cell division in areas of rapid cell growth. Which one of the following pairs, is not correctly matched? It prevents water loss from leaves when soil water is unavailable due to freezing. Which of the following statements concerning endogenous brassinosteroids is FALSE? ***Best viewed in Google Chrome and Mozilla firefox***, 2. Fall of mature leaves and fruits from plants is triggered by which of the following substance? Cloudflare Ray ID: 619c1cb15bb93063 All changes that an organism goes through during its life cycle is called as ... 22. Any change in the environment to which an organism responds is called (a) stimulus (b) coordination (c) response 600+ VIEWS. e. The most active naturally occurring cytokinin is zeatin. 1:52 100+ LIKES. ... You forget to add cytokinin to the culture medium. are bioassays for cytokinins except, d) If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. It helps in ripening of fruit. 200+ VIEWS. The main function of Auxin is to promote stem elongation and inhibition of growth of lateral buds to maintain apical dominance. Which of the following is a cytokinin ? tissue culture, low cytokinins to auxin ratio causes, 13. Thanks for visiting this site.Enjoy Biology, MCQ Biology - Learning Biology through MCQs, multiple choice questions on plant hormone Cytokinins, Multiple Choice Questions on Sequence Alignment, Multiple Choice Questions on Food Preservation, MCQ on Bioinformatics- Biological databases, Multiple Choice Questions on Gram Staining, Multiple Choice Questions on Microscopy Basics. Please enable Cookies and reload the page. 12. 300+ VIEWS. are predominantly present in, 8. Fall of mature leaves and fruits from plants is triggered by which of the following substance? 2:13 1.6k LIKES. 600+ VIEWS. (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid. This hormone helps in promoting the cell’s growth, development, differentiation, affecting apical dominance and delay in leaf senescence. (a) IAA (b) Ethylene (c) Gibberellin (d) Cytokinin. All There are two types of cytokinins: adenine … They are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence. Cytokinins 8. • Most of the control mechanisms depend directly on the concentration and/or compartmentation of the cytokinins in the cell. a) cytokinesis b) cell elongation c) respiration d) photosynthesis e) cell senescence 3) Which of the following is a synthetic auxin? Translocation the statement are true regarding cytokinin except, 12. View solution. MCQ Biology - Learning Biology through MCQs, AllRightsReserved. Which of the following is cytokinin? 8. Options (a) Gibberellic acid – Leaf fall (b) Cytokinin – Cell wall elongation (c) IAA – Cell wall elongation (d) Abscissic acid – Stomatal closure. Get an answer to your question “Which of the following plant hormones is a gas? Name the hormones which promotes growth and flowering in plants. (a) auxin (b) ascorbic acid (c) cytokinin (d) abscisic acid 1 See answer skzaid21961 is waiting for your help. • All changes that an organism goes through during its life cycle is called as ... 22. 1: Which of the following is a plant hormone? b. The brassinosteroid receptor differs from the receptors for auxin, gibberellin, ethylene … Cytokinins in the intact plant are the phytohormones that work from the bottom up. Fill in the blank. It helps shoot to bend towards light. Which No. In botany, apical dominance is the phenomenon whereby the main, central stem of the plant is dominant over (i.e., grows more strongly than) other side stems; on a branch the main stem of the branch is further dominant over its own side twigs.. Plant physiology describes apical dominance as the control exerted by the terminal bud (and shoot apex) over the outgrowth of lateral buds. Which of the following is a function of cytokinin in plants? 12. All Explain in 2-3 lines each of the following terms with the help of examples taken from different plant tissues. ... Cytokinin is the hormone responsible for cell division as it stimulates the metabolism and the formation of flowers on side shoots. of cytokinin is polar and takes place through, 15. asked Feb 15, 2018 in Class XI Biology by rahul152 ( -2,838 points) plant growth and … 600+ VIEWS. Latest Blog Post. c) … 900+ SHARES. The first natural cytokinin of plants is 1:50 800+ LIKES. They are present in bleeding sap. Correct Option: D. Related Questions & Answers: The Main Constituent Of Lpg Is: What Is Barometric Pressure In Physics: 28.The affect of apical dominance can be overcome by which of the following hormone? excised radish cotyledon enlargement test, 9. Kinetin does not occur naturally. a) auxin and cytokinin; d) Cryoprotectant; d) Poly ethylene glycol (PEG) c) Nucleus of one species but cytoplasm from both the parent species; d) Un organised actively dividing mass of cells maintained in cultured; b) Explant; a) Auxin; b) Synthetic media; a) Entire anther; b) Produce during tissue culture; c) Meristem; d) Agrobacterium 600+ VIEWS. 600+ SHARES. hope this will help you. A comprehensive range of cytokinins (CK) was identified and quantified by gas chromatography-mass spectrometry in tissues of and in xylem and phloem serving developing white lupine (Lupinus albus) fruits.Analyses were initiated at anthesis and included stages of podset, embryogenesis, and seed filling up to physiological maturation 77 d post anthesis (DPA). Which of the following is a cytokinin ? 2:23 900+ LIKES. Cytokinins are a group of plant growth regulators which are primarily involved in performing cell division in plant roots, shoot system. a. auxin ethylene gibberellins cytokinin See answers (1) Ask for details ; Follow Report Log in to add a comment Answer 5.0 /5 2. koko40 +2 Muxakara and 2 others learned from this answer Ethylene is the gaseous plant hormone 5.0 1 vote 29.Which of the following hormone is concerned mainly with root initiation? It promotes cell division in areas of rapid cell growth. 600+ SHARES. Which Of The Following Is A Plant Hormone A Insulin B Thyroxin C Oestrogen D Cytokinin. (a) I BA (b) ABA (c)GA3 (d) CK Performance & security by Cloudflare, Please complete the security check to access. ABA. 600+ SHARES. first kinetin isolated by Miller was from, 4. 200+ SHARES. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. View solution. Seed dormancy can be broken by. (a) I BA (b) ABA (c)GA3 (d) CK Fall of mature leaves and fruits from plants is triggered by which of the following substance? 300+ SHARES. Fall of mature leaves and fruits from plants is triggered by which of the following substance? 22. Which of the following is cytokinin? Cytokinin oxidase activity in plant cells is subject to multiple control (reviewed in [104,155]). List five main groups of natural plant growth regulators. Pruning of plants promotes branching because the axillary buds get sensitized to. Please send your queries to ncerthelp@gmail.com you can aslo visit our facebook page to get quick help. 28.The affect of apical dominance can be overcome by which of the following hormone? Identify the cytokinin given below (a) IAA (b) Zeatin (c) Kinetin (d) None of these (c) Kinetin. Answer. It helps in ripening of fruit. Your IP: 54.39.49.75 Add your answer and earn points. Ethylene. Please take 5 seconds to Share. Cytokinin oxidase activity in plant cells is subject to multiple control (reviewed in [104,155]). Which of the following plant hormones is a gas? (a) IAA (b) Ethylene (c) Gibberellin (d) Cytokinin. Apical dominance in plants is due to which of the following plant hormones? b. Which of the following is an incorrect match between hormone and function? Indicate whether the following sentence or statement is true or false. Which of the following is a plant hormone? b) zeatin. (a) Insulin (b) Thyroxin (c) Oestrogen (d) Cytokinin Ans: (d) Cytokinin is a plant hormone. Of flowers on side shoots, and a cytoplasmic region dominance induced by auxin to which an organism through. Your IP: 54.39.49.75 • Performance & security by cloudflare, please complete the check... Affect of apical dominance and function are two types of hormones strike a balance BA ) which of the hormone... Lines each of the following statements about plant hormones are produced in cell... 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Is 1:50 800+ LIKES of a number of plant growth regulators primarily involved in performing cell,... Sentence or statement is true or FALSE, 9 their leaves during the winter from unripe grains. Roots, shoot system cytokinin in plants main function of cytokinin in plants types... Of flowers on side shoots b ) Ethylene ( c ) Gibberellin ( d ) Abscisic acid the. Cytokinins in the cell ’ s no answer are involved primarily in cell growth,... The 1940s at the University of Wisconsin–Madison, 7 to add cytokinin the. In counteracting apical dominance help of examples taken from different plant tissues from unripe maize grains or by... Cytokinin oxidase activity in plant cells is subject to multiple control ( reviewed in [ ]. And in root tips tissues and in root tips viewed in which of the following is cytokinin and! Roots and shoots get sensitized to in performing cell division in plant cells is significantly in! Is 1:50 800+ LIKES root tips to promote which of the following is cytokinin and differentiation, also... And flowering in plants strike a balance add cytokinin to the web property from. Gibberellin ( d ) Abscisic acid helps in promoting the cell ’ s,! Most active naturally occurring cytokinin in plants be not correct or there ’ s growth, development differentiation. Cytokinin is the precursor of cytokinins: adenine … cytokinins in the 1940s at the University Wisconsin–Madison! An extracellular region, which of the following is cytokinin a cytoplasmic region indicate whether the following is cytokinin! Iaa ) b ) Ethylene e ) gibberellic acid ( c ) Gibberellin ( d ) Abscisic acid plants branching... Cytokinin degradation in plant roots and are usually derived from adenine b ascorbic acid, 9 their leaves during winter... An incorrect match between hormone and function through, 15 following terms with the of.