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

done Growth Total Questions - 64

• question_answer1)
  Maximum growth in roots occurs
  A)
  At apex done clear
  B)
  In presence of light done clear
  C)
  Behind the apex done clear
  D)
  In presence of soil done clear
  View Solution play_arrow

• question_answer2)
  Auxanometer is meant for [BHU 1987; CPMT 1975, 81, 95, 2002; Kerala CET 2003; AMU 2005]
  A)
  Respiratory activity done clear
  B)
  Photosynthetic activity done clear
  C)
  Growth activity done clear
  D)
  The amount of auxins done clear
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• question_answer3)
  What is the role of light in plants [JIPMER 1988]
  A)
  It is necessary for photosynthesis done clear
  B)
  It controls growth and movement done clear
  C)
  It controls the distribution of hormones done clear
  D)
  All the above done clear
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• question_answer4)
  Which two factors primarily affect the developmental phase of growth of plants [MP PMT 1989]
  A)
  Light and temperature done clear
  B)
  Rainfall and temperature done clear
  C)
  Light and wind done clear
  D)
  Temperature and relative humidity done clear
  View Solution play_arrow

• question_answer5)
  Evergreen trees remain green throughout the year on account of [AFMC 1981; JIPMER 1984; MP PMT 1988]
  A)
  Absence of leaf fall done clear
  B)
  Leaves falling in small numbers at intervals done clear
  C)
  Supply of the moisture throughout the year done clear
  D)
  Cold climate done clear
  View Solution play_arrow

• question_answer6)
  The growth involves [MP PMT 1988]
  A)
  Cell division done clear
  B)
  Cell enlargement done clear
  C)
  Cell maturation done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer7)
  Where would you look for active cell division in plant [MP PMT 1986]
  A)
  In the pith cells done clear
  B)
  In the cells of cortex done clear
  C)
  In the internodal region done clear
  D)
  At the tip of root and shoot done clear
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• question_answer8)
  Plant growth in length is increased by [CPMT 1984; DPMT 1986; MP PMT 1998]
  A)
  Apical meristem done clear
  B)
  Lateral meristem done clear
  C)
  Dermatogen done clear
  D)
  Periblem done clear
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• question_answer9)
  Growth is a
  A)
  Unidirectional backward done clear
  B)
  Reversible done clear
  C)
  Unidirectional forward done clear
  D)
  None of the above done clear
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• question_answer10)
  DCMU is a herbicide which kills the plant by [BHU 1980, 82, 89]
  A)
  Checking respiration done clear
  B)
  Destroying chloroplast done clear
  C)
  Inhibiting carbon dioxide fixation as it is strong inhibitor of pigment system-II done clear
  D)
  Inhibiting photolysis of water as it is a strong inhibitor of pigment system-I done clear
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• question_answer11)
  During seed germination [CPMT 1984]
  A)
  Heat is liberated done clear
  B)
  Starch is synthesized done clear
  C)
  Fat is synthesized done clear
  D)
  Light is absorbed done clear
  View Solution play_arrow

• question_answer12)
  Etiolation in plants is caused when they [CPMT 1984; AIIMS 1985; Bihar MDAT 1995]
  A)
  Are grown in dark done clear
  B)
  Have mineral deficiency done clear
  C)
  Are grown in intense light done clear
  D)
  Are grown in blue light done clear
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• question_answer13)
  If a leaf segment of Bryophyllum plant is in soil, it produces new plants. This is because its leaf has [NCERT 1983]
  A)
  Small embryos done clear
  B)
  Buds done clear
  C)
  High concentration of auxins and cytokinins done clear
  D)
  High concentration of cytokinins done clear
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• question_answer14)
  The rate of growth of any organism follows [MP PMT 1984]
  A)
  Hyperbola curve done clear
  B)
  J-shaped curve done clear
  C)
  Sigmoid curve done clear
  D)
  Parabola curve done clear
  View Solution play_arrow

• question_answer15)
  The process of growth is determined by
  A)
  Increase in size done clear
  B)
  Increase in size and dry weight done clear
  C)
  Increase weight only done clear
  D)
  Increase in dry weight done clear
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• question_answer16)
  A bifacial organ bends towards, where
  A)
  Growth is more done clear
  B)
  Growth is slow done clear
  C)
  Darkness is there done clear
  D)
  None of the above done clear
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• question_answer17)
  In which of the stage, the enzymatic actions start in plant
  A)
  Germination done clear
  B)
  At the time of photosynthesis done clear
  C)
  At the time of flower establishment done clear
  D)
  At the time of fertilization done clear
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• question_answer18)
  In lag phase, growth is
  A)
  Slowest done clear
  B)
  Fastest done clear
  C)
  Intermediate done clear
  D)
  No growth at all done clear
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• question_answer19)
  Grand period of growth is called
  A)
  Early period done clear
  B)
  Middle period done clear
  C)
  Total growth period done clear
  D)
  Decreasing growth rate done clear
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• question_answer20)
  The effect of oxygen supply on growth is
  A)
  Positive done clear
  B)
  Negative done clear
  C)
  In some plants it is positive while in others it is negative done clear
  D)
  None of the above done clear
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• question_answer21)
  When food supply is poor, the rate of growth is
  A)
  Fast done clear
  B)
  Slow done clear
  C)
  Intermediate done clear
  D)
  Nil done clear
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• question_answer22)
  The rate of growth is highest in
  A)
  Lag phase done clear
  B)
  Log phase done clear
  C)
  Steady state done clear
  D)
  None of the above done clear
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• question_answer23)
  By arc auxanometer, we measure the growth in
  A)
  Elongation done clear
  B)
  Thickness done clear
  C)
  Both [a] and [b] done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer24)
  'Traumatin' is present in
  A)
  Old leaves done clear
  B)
  Cork done clear
  C)
  Wood done clear
  D)
  Injured portion done clear
  View Solution play_arrow

• question_answer25)
  Which of the following is used to measure the growth in elongation
  A)
  Potometer done clear
  B)
  Porometer done clear
  C)
  Horizontal microscope done clear
  D)
  Clinostate done clear
  View Solution play_arrow

• question_answer26)
  Legume seeds exhibit dormancy because of [DPMT 1986]
  A)
  Undeveloped embryos done clear
  B)
  Hard seed coat done clear
  C)
  Absence of cytokinins done clear
  D)
  Absence of gibberellic acid done clear
  View Solution play_arrow

• question_answer27)
  The instrument by which the rate of growth of stem is accurately measured is [CPMT 1985]
  A)
  Hydrometer done clear
  B)
  Auxanometer done clear
  C)
  Osmometer done clear
  D)
  Potometer done clear
  View Solution play_arrow

• question_answer28)
  Several horticultural techniques are followed for the production of 'bonsai' plants. One of them is drastic pruning of root system. Which of the following physiological factor is involved in that method [CBSE PMT 1990]
  A)
  Inadequacy of mineral nutrients done clear
  B)
  Deficiency of auxins done clear
  C)
  Impairment of water absorption done clear
  D)
  Deficiency of cytokinins done clear
  View Solution play_arrow

• question_answer29)
  Distribution of growth in a root by marking it at equal intervals with Indian ink was originally studied by [BHU 1986]
  A)
  Sachs done clear
  B)
  Strasburger done clear
  C)
  Went done clear
  D)
  Nitsch done clear
  View Solution play_arrow

• question_answer30)
  Which one of the following is the motivative force for growth [NCERT 1979]
  A)
  Turgor pressure done clear
  B)
  Root pressure done clear
  C)
  Atmospheric pressure done clear
  D)
  Osmotic pressure done clear
  View Solution play_arrow

• question_answer31)
  The type of growth of bands in conifers is [DPMT 1991]
  A)
  Lateral done clear
  B)
  Delinquent done clear
  C)
  Caudex done clear
  D)
  Excurrent done clear
  View Solution play_arrow

• question_answer32)
  Different growth phases results in a
  A)
  'S' shaped curve on graph done clear
  B)
  Straight curve on graph done clear
  C)
  Zig-zag curve on graph done clear
  D)
  Spiral curve on graph done clear
  View Solution play_arrow

• question_answer33)
  The correct sequence of cellular growth stages is
  A)
  Division ® differentiation ® elongation done clear
  B)
  Division ® elongation ® differentiation done clear
  C)
  Differentiation ® division ® elongation done clear
  D)
  Elongation ® differentiation ® division done clear
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• question_answer34)
  Growth is defined as a change which is
  A)
  Reversible at constant pH done clear
  B)
  Irreversible at constant pH done clear
  C)
  Reversible at constant turgidity done clear
  D)
  Irreversible at constant turgidity done clear
  View Solution play_arrow

• question_answer35)
  How growth takes place in an organism
  A)
  By change of size done clear
  B)
  By chemical reaction in cell done clear
  C)
  By biochemical conversion of food into living matter done clear
  D)
  By multiplication of cells or tissues done clear
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• question_answer36)
  Which of the following is the primary motive force responsible for growth
  A)
  Root pressure done clear
  B)
  Turgor pressue done clear
  C)
  Osmotic pressure done clear
  D)
  DPD done clear
  View Solution play_arrow

• question_answer37)
  The growth pattern of a plant is different from the growth pattern of an animal in having
  A)
  Localized growth centres done clear
  B)
  Indefinite life span done clear
  C)
  Both the above done clear
  D)
  Diffused growth done clear
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• question_answer38)
  The usual shape of growth curve is [MP PMT 1998]
  A)
  Linear done clear
  B)
  Inverted bell-shaped done clear
  C)
  Sigmoidal done clear
  D)
  Zig-zag done clear
  View Solution play_arrow

• question_answer39)
  The S-shaped growth curve and 'grand period of growth' may change with
  A)
  Sudden fluctuation in light intensity done clear
  B)
  Change in temperature done clear
  C)
  Fluctuation in humidity done clear
  D)
  It remains unaffected done clear
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• question_answer40)
  After achieving its maximum, the growth decreases slowly during the phase of
  A)
  Cell maturation done clear
  B)
  Cell division done clear
  C)
  Cell differentiation done clear
  D)
  Cell enlargement done clear
  View Solution play_arrow

• question_answer41)
  In a vascular plant, the exponential phase represents the phase of
  A)
  Cell division done clear
  B)
  Cell elongation done clear
  C)
  Cell maturation done clear
  D)
  Cell differentiation done clear
  View Solution play_arrow

• question_answer42)
  Which of the following instrument can be used to record plant growth by seconds i.e. in fraction of a minute [RPMT 1991]
  A)
  Arc auxanometer done clear
  B)
  Arc indicator done clear
  C)
  Space marker disc done clear
  D)
  Crescograph done clear
  View Solution play_arrow

• question_answer43)
  Most important division for the growth of a plant is
  A)
  Mitosis done clear
  B)
  Meiosis done clear
  C)
  Amitosis and fission done clear
  D)
  All the above done clear
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• question_answer44)
  In vascular plants, light promotes [EAMCET 1984]
  A)
  Growth done clear
  B)
  Development done clear
  C)
  Differentiation done clear
  D)
  De-differentiation done clear
  View Solution play_arrow

• question_answer45)
  Change in form and physiological activity is termed as
  A)
  Growth done clear
  B)
  Development done clear
  C)
  Differentiation done clear
  D)
  Osmosis done clear
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• question_answer46)
  The sequence of steps in the history of an organism is called
  A)
  Growth done clear
  B)
  Development done clear
  C)
  Differentiation done clear
  D)
  Life history done clear
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• question_answer47)
  Which of the following plays a prominent role in leaf growth
  A)
  Carbonate done clear
  B)
  Nitrate done clear
  C)
  Sulphate done clear
  D)
  Phosphate done clear
  View Solution play_arrow

• question_answer48)
  Which of the following is absolutely necessary for germination [DPMT 1982]
  A)
  Light done clear
  B)
  Water done clear
  C)
  Low temperature done clear
  D)
  Mineral salts done clear
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• question_answer49)
  Which of the following seeds would germinate
  A)
  Mature seeds over wet cotton done clear
  B)
  Soaked seeds over dry cotton done clear
  C)
  Dry seeds over dry cotton done clear
  D)
  Seeds soaked in 5% picric acid done clear
  View Solution play_arrow

• question_answer50)
  Deeply sown seeds do not germinate and do not come up over due to the deficiency of
  A)
  Light done clear
  B)
  Water done clear
  C)
  Oxygen done clear
  D)
  Nutrients done clear
  View Solution play_arrow

• question_answer51)
  What causes delay in germination of seeds [DPMT 1985]
  A)
  Mechanical resistance of testa done clear
  B)
  Impermeability of seed coat done clear
  C)
  Unavailability of water and \[{{O}_{2}}\] done clear
  D)
  All the above done clear
  View Solution play_arrow

• question_answer52)
  Energy for the early growth of a developing bean embryo comes from
  A)
  Sunlight done clear
  B)
  Water in the soil done clear
  C)
  Food in the soil done clear
  D)
  Leaves in the seed done clear
  View Solution play_arrow

• question_answer53)
  Seeds of parasitic plants like Orobanche germinate in the presence of
  A)
  Auxin produced by the roots of the host done clear
  B)
  \[G{{A}_{3}}\]produced by the roots of the parasite done clear
  C)
  Exudates of the host plant done clear
  D)
  Exudates of the parasite done clear
  View Solution play_arrow

• question_answer54)
  Most dominant direct factor which influences the growth of plants is
  A)
  Light done clear
  B)
  Temperature done clear
  C)
  Soil done clear
  D)
  Wind done clear
  View Solution play_arrow

• question_answer55)
  When tropical plants are shifted to temperate climate, they do not grow. This is due to
  A)
  Dessication done clear
  B)
  Freezing injury done clear
  C)
  Chilling injury done clear
  D)
  Poor illumination done clear
  View Solution play_arrow

• question_answer56)
  The plants are killed in water by frost due to
  A)
  Dessication and mechanical damage done clear
  B)
  Stop of photosynthesis done clear
  C)
  Stop of respiration done clear
  D)
  Stop of transpiration done clear
  View Solution play_arrow

• question_answer57)
  Low C/N ratio favours
  A)
  Flowering done clear
  B)
  Vigorous vegetative growth done clear
  C)
  Senescence done clear
  D)
  More flowering and poor vegetative growth done clear
  View Solution play_arrow

• question_answer58)
  The excess amount of\[C{{O}_{2}}\]
  A)
  Retards growth done clear
  B)
  Accelerates growth done clear
  C)
  Affects the growth slowly done clear
  D)
  Does not affect growth done clear
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• question_answer59)
  Which of the following remains unchanged at the end of growth
  A)
  Hormones done clear
  B)
  Enzymes done clear
  C)
  Vitamins done clear
  D)
  Nucleotides done clear
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• question_answer60)
  Growth is maximum in the zone of [AFMC 1994]
  A)
  Cell division done clear
  B)
  Cell elongation done clear
  C)
  Cell maturation done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer61)
  The growth in plants is [MP PMT 1999]
  A)
  Limited done clear
  B)
  Unlimited done clear
  C)
  Unlocalised done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer62)
  Highest growth found in [Pb. PMT 1999; RPMT 1999]
  A)
  Static phase done clear
  B)
  Exponential phase done clear
  C)
  Descending phase done clear
  D)
  Lag phase done clear
  View Solution play_arrow

• question_answer63)
  To remove seed dormancy by mechanical removing of seed coat is called [DPMT 2003]
  A)
  Stratification done clear
  B)
  Scarification  done clear
  C)
  Vernalization done clear
  D)
  Photoperiodism done clear
  View Solution play_arrow

• question_answer64)
  Dendrochronology is [Kerala CET 2003]
  A)
  Secondary growth done clear
  B)
  Apical growth  done clear
  C)
  Seasonal variation done clear
  D)
  Determination of age of tree done clear
  View Solution play_arrow