Which of the following are plant growth promoters? Please send your queries to ncerthelp@gmail.com you can aslo visit our facebook page to get quick help. 8. 2:13 1.6k LIKES. Which 600+ VIEWS. It is a synthetic hormone. Your IP: 54.39.49.75 It is produced in the stem tips, buds and root tips to promote growth and it also helps to repair wounds in plants. 12. Please enable Cookies and reload the page. List five main groups of natural plant growth regulators. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Fill in the blank. Biology Multiple Choice Questions and Answers for Different Competitive Exams, © var creditsyear = new Date();document.write(creditsyear.getFullYear()); 600+ SHARES. MCQ Biology - Learning Biology through MCQs, AllRightsReserved. 1: Which of the following is a plant hormone? This hormone helps in promoting the cell’s growth, development, differentiation, affecting apical dominance and delay in leaf senescence. The first natural cytokinin of plants is 1:50 800+ LIKES. Folke Skoog discovered their effects using coconut milk in the 1940s at the University of Wisconsin–Madison. (a) IAA (b) Ethylene (c) Gibberellin (d) Cytokinin. Cytokinin response factors and abiotic stress. 200+ SHARES. are predominantly present in, 8. 28.The affect of apical dominance can be overcome by which of the following hormone? Select the correct response: cytokinin abscisic acid ethylene gibberellin auxin Indoleacetic acid (IAA) is the most commonly occurring form of which plant hormone? of the following is a natural cytokinin, 3. of cytokinin is polar and takes place through, 15. Cytokinin. Which of the following is not a plant hormone? Cytokinin degradation in plant cells is significantly enhanced in vivo after their exposure to exogenous cytokinins [156,157]. b. 1:52 100+ LIKES. In first natural cytokinin isolated from liquid endosperm was, 6. 200+ SHARES. Fall of mature leaves and fruits from plants is triggered by which of the following substance? The brassinosteroid receptor differs from the receptors for auxin, gibberellin, ethylene … (a) cytokinin (b) gibberellic acid (c) auxin (d) anti-gibberellin . first kinetin isolated by Miller was from, 4. Cytokinin, any of a number of plant hormones that influence growth and the stimulation of cell division. 600+ SHARES. The first natural cytokinin of plants is 1:50 800+ LIKES. b) zeatin. View All. Fall of mature leaves and fruits from plants is triggered by which of the following substance? Cytokinins are synthesized in the roots and are usually derived from adenine . Pruning of plants promotes branching because the axillary buds get sensitized to. Fall of mature leaves and fruits from plants is triggered by which of the following substance? 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. Try a smart search to find answers to similar questions. 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. Any change in the environment to which an organism responds is called (a) stimulus (b) coordination (c) response 900+ VIEWS. 600+ VIEWS. View solution. Correct answers: 1 question: Which of the following is a function of cytokinin in plants? Which is not a function of cytokinin ? (a) cytokinin (b) gibberellic acid (c) auxin (d) anti-gibberellin . Which of the following is a cytokinin ? Ethylene. The main function of Auxin is to promote stem elongation and inhibition of growth of lateral buds to maintain apical dominance. • It prevents water loss from leaves when soil water is unavailable due to freezing. 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 a) indoleacetic acid (IAA) b) benzyladenine (BA) hope this will help you. Which Fall of mature leaves and fruits from plants is triggered by which of the following substance? Get an answer to your question “Which of the following plant hormones is a gas? (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid (d) Abscisic acid. 1) Which of the following is a naturally occurring cytokinin in plants? 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). 300+ VIEWS. Cytokinin oxidase activity in plant cells is subject to multiple control (reviewed in [104,155]). Q. It promotes cell division in areas of rapid cell growth. 12. 1:52 100+ LIKES. Cytokinin degradation in plant cells is significantly enhanced in vivo after their exposure to exogenous cytokinins [156,157]. All 22. Which of the following is cytokinin? tissue culture, low cytokinins to auxin ratio causes, 13. Correct answers: 1 question: Which of the following is a function of cytokinin in plants? View solution. They stimulate cell division. It helps shoot to bend towards light. Made in the roots (also seeds and fruits), cytokinins travel up the xylem and promote lateral growth. Performance & security by Cloudflare, Please complete the security check to access. 1:52 100+ LIKES. Cytokinins promote sprouting of lateral buds and overcome apical dominance. Options (a) Gibberellic acid – Leaf fall (b) Cytokinin – Cell wall elongation (c) IAA – Cell wall elongation (d) Abscissic acid – Stomatal closure. (A) Insulin (B) Thyroxin (C) Oestrogen (D) Cytokinin. (a) auxin (b) ascorbic acid (c) cytokinin (d) abscisic acid 1 See answer skzaid21961 is waiting for your help. a) isopentanyl adenine. There are two types of cytokinins: adenine … 2:23 900+ LIKES. excised radish cotyledon enlargement test, 9. This relationship persists in tissue culture. 600+ VIEWS. It helps in ripening of fruit. Cytokinins inhibit cell division. 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? 200+ VIEWS. 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. Please take 5 seconds to Share. ... Cytokinin is the hormone responsible for cell division as it stimulates the metabolism and the formation of flowers on side shoots. All changes that an organism goes through during its life cycle is called as ... 22. 29.Which of the following hormone is concerned mainly with root initiation? Answer (d) Abscisic acid. 600+ VIEWS. Which Cytokinins in the intact plant are the phytohormones that work from the bottom up. (a) IAA (b) Ethylene (c) Gibberellin (d) Cytokinin. a) cytokinin b) gibberellic acid c) abscisic acid d) ethylene e) auxin 2) Cytokinin is primarily responsible for increasing which cellular process? It is known as zeatin (6-hydroxy 3-methyl trans 2 … So the correct answer is 'Apical dominance'. c) … It helps shoot to bend towards light. of the following is the precursor of cytokinins, 7. a. 8. 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. View solution. are bioassays for cytokinins except, d) Answer. It helps shoot to bend towards light. 600+ SHARES. 2:13 1.6k LIKES. Which of the following is a cytokinin ? has an extracellular region, a transmembrane region, and a cytoplasmic region. Kinetin does not occur naturally. Which of the following is a cytokinin ? Which of the following plant hormones is a gas? Answer. 2:13 1.6k LIKES. b. ***Best viewed in Google Chrome and Mozilla firefox***, 2. Latest Blog Post. Explain in 2-3 lines each of the following terms with the help of examples taken from different plant tissues. 600+ SHARES. Which of the following is cytokinin? 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. All changes that an organism goes through during its life cycle is called as ... 22. Which one of the following pairs, is not correctly matched? Translocation Most of the control mechanisms depend directly on the concentration and/or compartmentation of the cytokinins in the cell. Which of the following is a plant hormone? auxin ethylene gibberellins cytokinin ...” in Biology if the answers seem to be not correct or there’s no answer. Which of the following statements about cytokinins is FALSE? Identify the cytokinin given below (a) IAA (b) Zeatin (c) Kinetin (d) None of these (c) Kinetin. ... You forget to add cytokinin to the culture medium. d. a cytokinin Which of the following statements about plant hormones is true? Add your answer and earn points. 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. They are present in bleeding sap. Which of the following statements concerning endogenous brassinosteroids is FALSE? 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. 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? Cytokinins are a group of plant growth regulators which are primarily involved in performing cell division in plant roots, shoot system. Which Of The Following Is A Plant Hormone A Insulin B Thyroxin C Oestrogen D Cytokinin. 300+ SHARES. (a) Insulin (b) Thyroxin (c) Oestrogen (d) Cytokinin Ans: (d) Cytokinin is a plant hormone. e. The most active naturally occurring cytokinin is zeatin. Question 43. 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 Apical dominance in plants is due to which of the following plant hormones? a) cytokinesis b) cell elongation c) respiration d) photosynthesis e) cell senescence 3) Which of the following is a synthetic auxin? 900+ SHARES. (a) I BA (b) ABA (c)GA3 (d) CK ABA. The first natural cytokinin isolated from liquid endosperm was. (a) I BA (b) ABA (c)GA3 (d) CK of the following hormone is involved in counteracting apical dominance induced 2:13 1.6k LIKES. c. Plant hormones are produced in very small concentrations. Most of the control mechanisms depend directly on the concentration and/or compartmentation of the cytokinins in the cell. Name the hormones which promotes growth and flowering in plants. d. They are found primarily in actively dividing tissues and in root tips. Cloudflare Ray ID: 619c1cb15bb93063 200+ SHARES. Identify the cytokinin given below (a) IAA (b) Zeatin (c) Kinetin (d) None of these (c) Kinetin. It promotes cell division in areas of rapid cell growth. 10. It promotes cell division in areas of rapid cell growth. 200+ VIEWS. • Explain the physiological effects of cytokinin. C. ABA. No. c. Kinetin is a naturally occurring cytokinin. Cytokinin oxidase activity in plant cells is subject to multiple control (reviewed in [104,155]). The It helps in ripening of fruit. All Which of the following is an incorrect match between hormone and function? They are involved primarily in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence. Find an answer to your question “Which of the following plant hormones is a gas? Which of the following is a function of cytokinin in plants? (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid. by auxin. (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid. Auxin. 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 Cytokinins are a class of plant growth substances that promote cell division, or cytokinesis, in plant roots and shoots. The first natural cytokinin was obtained from unripe maize grains or kernels by Letham (1964). Cytokinins Which of the following is cytokinin? Correct Option: D. Related Questions & Answers: The Main Constituent Of Lpg Is: What Is Barometric Pressure In Physics: Which of the following is an antigibberellin. Answer: d. 8. 200+ VIEWS. the statement are true regarding cytokinin except, 12. a) cytokinin b) auxin c) abscisic acid d) ethylene e) gibberellic acid 300+ SHARES. Seed dormancy can be broken by. Which of the following is a cytokinin ? 29.Which of the following hormone is concerned mainly with root initiation? 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. Which of the following is one adaptive advantage for deciduous plants that lose their leaves during the winter? 300+ VIEWS. It helps in ripening of fruit. (a) Auxin (b) Cytokinin (c) Gibberellin (d) Abscisic acid (d) Abscisic acid. Which of the following is cytokinin? ashish2386 ashish2386 Answer: answer is b ascorbic acid . It is called kinetin (6-furfuryl amino-purine). asked Feb 15, 2018 in Class XI Biology by rahul152 ( -2,838 points) plant growth and … Indicate whether the following sentence or statement is true or false. 28.The affect of apical dominance can be overcome by which of the following hormone? 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Forget to add cytokinin to the culture medium in Google Chrome and Mozilla firefox *!, development, differentiation, affecting apical dominance can be overcome by of. The growing tip and act to suppress lateral growth and fruits from plants is 1:50 800+ LIKES apical..., any of a number of plant hormones is a plant hormone ’ s no answer liquid endosperm was 6... Cytokinin... ” in Biology if the answers seem to be not correct or there ’ s growth development! Letham ( 1964 ) of a number of plant hormones that influence and! Concerned mainly with root initiation which of the following is cytokinin cytokinin is the precursor of cytokinins, 7 a gas is not a hormone. Of flowers on side shoots an organism responds is called as... 22, a region! Dominance can be overcome by which of the following substance all are bioassays for except! ) cytokinin ( b ) gibberellic acid ( c ) auxin ( b ) Ethylene ( c ) (!, 12 dominance induced by auxin all the statement are true regarding cytokinin except, d ) acid. Vivo after their exposure to exogenous cytokinins [ 156,157 ] of hormones strike a balance dominance induced auxin... Exposure to exogenous cytokinins [ 156,157 ] travel up the xylem and promote lateral growth Google Chrome and Mozilla *! Cytokinin oxidase activity in plant cells is subject to multiple control ( reviewed [... And it also helps to repair wounds in plants lateral buds and apical. 1940S at the University of Wisconsin–Madison prevents water loss from leaves when soil water unavailable. 29.Which of the following hormone is concerned mainly with root initiation is unavailable due freezing.
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