NEET Biology Plant Growth and Development / पौधे की वृद्धि और विकास Question Bank

done Growth Hormones Total Questions - 23

• question_answer1)
  Phytotron is a device by which [MP PMT 1986; BHU 1978; CPMT 1995]
  A)
  Electrons are bombarded done clear
  B)
  Protons are liberated done clear
  C)
  Plants are grown in controlled environment done clear
  D)
  Mutations are produced in plants done clear
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• question_answer2)
  The natural plant hormones were first isolated from [CPMT 1989]
  A)
  Corn germ oil and human urine done clear
  B)
  Cotton fruits, spinach leaves and rice plants done clear
  C)
  Avena coleoptile spinach leaves and the fungus gibberella done clear
  D)
  Human urine and rice seedlings done clear
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• question_answer3)
  Who used the term 'phytohormones' for plant hormone
  A)
  Balis done clear
  B)
  Morgan done clear
  C)
  Went done clear
  D)
  Thimman done clear
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• question_answer4)
  Which of the following is plant hormone
  A)
  Auxin done clear
  B)
  Morphactin done clear
  C)
  Gibberellin done clear
  D)
  All the above done clear
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• question_answer5)
  Grass coleoptile tip bend towards source of light because
  A)
  It likes the sun done clear
  B)
  It is heavy done clear
  C)
  It needs darkness done clear
  D)
  Due to some secretion from tip done clear
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• question_answer6)
  By hormone application it is possible to obtain seedless fruits. In which of the following it is desirable to obtain seedless fruits [CPMT 1985]
  A)
  Tomato done clear
  B)
  Orange done clear
  C)
  Watermelon done clear
  D)
  Pomegranate (Anar) done clear
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• question_answer7)
  In which of the following respect, the plant hormones differ from enzymes [BVP 2003]
  A)
  Required in less quantity done clear
  B)
  They are expanded in the process done clear
  C)
  They release some energy done clear
  D)
  None of the above done clear
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• question_answer8)
  Phytohormones are used in
  A)
  Parthenacarpy done clear
  B)
  Grafting done clear
  C)
  Ripening of fruits done clear
  D)
  All the above done clear
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• question_answer9)
  Whose technique is employed for the extraction and elimination of hormones [CPMT 1986]
  A)
  Beck done clear
  B)
  Beer done clear
  C)
  Garner done clear
  D)
  Allard done clear
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• question_answer10)
  Hormone is a
  A)
  Greek word done clear
  B)
  Latin word done clear
  C)
  Chinese word done clear
  D)
  Indian word done clear
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• question_answer11)
  Rhizocalin is an additional hormonal substance which is secreted by
  A)
  Cotyledons done clear
  B)
  Roots done clear
  C)
  Leaves done clear
  D)
  Stem done clear
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• question_answer12)
  A tissue that does not form hormones is
  A)
  Xylem done clear
  B)
  Sclerenchyma done clear
  C)
  Both [a] and [b] done clear
  D)
  None of these done clear
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• question_answer13)
  'Climacteric' is
  A)
  A phenomenon related to fruit ripening done clear
  B)
  The condition of a plant when all of its fruits are almost ripe done clear
  C)
  The condition of a plant when most of its leaves have turned yellow done clear
  D)
  None of the above done clear
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• question_answer14)
  Which of the following substances act as a key growth regulator
  A)
  ATP and food done clear
  B)
  Hormones done clear
  C)
  Enzymes done clear
  D)
  Auxin and vitamins done clear
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• question_answer15)
  Plant hormones are usually
  A)
  Proteins done clear
  B)
  Lipids done clear
  C)
  Carbohydrates done clear
  D)
  Aromatic compounds done clear
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• question_answer16)
  Phytohormones control [CBSE PMT 1990]
  A)
  Growth done clear
  B)
  Physiological functions done clear
  C)
  Rooting done clear
  D)
  Flowering done clear
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• question_answer17)
  Substances which originate at the tip of stem and root and control the growth of different organs are [AFMC 1984, 86; CPMT 1984]
  A)
  Enzymes done clear
  B)
  Hormones done clear
  C)
  Vitamins done clear
  D)
  Food substances done clear
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• question_answer18)
  Who for the first time speculated the presence of organ forming substances in plant now called hormones [MP PMT 2001]
  A)
  Darwin done clear
  B)
  Went done clear
  C)
  Yabuta done clear
  D)
  Sachs done clear
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• question_answer19)
  Which of the following technique is employed for the separation and identification of phytohormones
  A)
  Polarizing microscopy done clear
  B)
  Autoradiography done clear
  C)
  Gas chromatography done clear
  D)
  Cell fractionation done clear
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• question_answer20)
  Legume seeds exhibit dormancy because of [DPMT 1986]
  A)
  Undeveloped embryo done clear
  B)
  Hard seed coat done clear
  C)
  Absence of cytokinin done clear
  D)
  Absence of\[G{{A}_{3}}\] done clear
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• question_answer21)
  Why the newly harvested potato tubers do not germinate even when placed in favourable conditions
  A)
  Due to dormancy done clear
  B)
  Due to lack of water absorption done clear
  C)
  Due to difficulty of light penetration done clear
  D)
  Due to lack of photosynthetic apparatus done clear
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• question_answer22)
  Among plants ?pheromones? are secreted by the cells of following plants for the given function [BHU 1994]
  A)
  All plants for growth and development done clear
  B)
  Yeast for facilitating mating done clear
  C)
  All fungi for sexual reproduction done clear
  D)
  Rhizopus for the formation of zygospore done clear
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• question_answer23)
  Certain chemical substances having profound effect on growth, are called [MP PMT 1997]
  A)
  Catalytic agents done clear
  B)
  Phytohormones done clear
  C)
  Enzymes done clear
  D)
  Compost done clear
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