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

done Self Evaluation Test - Plant Growth and Development Total Questions - 78

• question_answer1)
  In plants, growth is:
  A)
  Restricted to certain regions or structure done clear
  B)
  Irreversible done clear
  C)
  Change in size done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer2)
  Growth is primarily affected by two climatic factors which are:      
  A)
  Light and temperature    done clear
  B)
  Temperature and relative humidity done clear
  C)
  Light and wind done clear
  D)
  Rainfall and temperature done clear
  View Solution play_arrow

• question_answer3)
  Which of the following instrument can be used to record plant growth by seconds?
  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_answer4)
  Plant growth is ultimately regulated by:
  A)
  Environmental cues done clear
  B)
  Hormones done clear
  C)
  Signal transduction pathways done clear
  D)
  The plant's genome done clear
  View Solution play_arrow

• question_answer5)
  The process in which mature differentiated cells reverse to meristematic activity to form callus is called:
  A)
  Cytodifferentiation                      done clear
  B)
  redifferentiation done clear
  C)
  Dedifferentiation                         done clear
  D)
  differentiation done clear
  View Solution play_arrow

• question_answer6)
  Which one of the following is primarily concerned with cell division?
  A)
  \[G{{A}_{3}}\]                         done clear
  B)
  IAA done clear
  C)
  Cytokinin                                   done clear
  D)
  IBA done clear
  View Solution play_arrow

• question_answer7)
  The discovery of gibberellins is related with which one of the following?
  A)
  Blast disease of rice done clear
  B)
  Bakanae disease of rice done clear
  C)
  Early blight disease of potato done clear
  D)
  Rust disease of wheat done clear
  View Solution play_arrow

• question_answer8)
  Which of the following light receptors is responsible for absorbing blue and ultraviolet light?
  A)
  Phytochrome \[{{\operatorname{P}}_{r}}\] done clear
  B)
                     Photochrome \[{{\operatorname{P}}_{fr}}\] done clear
  C)
               Cryptochrome               done clear
  D)
  Phototropin done clear
  View Solution play_arrow

• question_answer9)
  Match the column-I with column-II and choose the correct option.

  	Column-I		Column-II
  A.	Formative	I.	Plastic extension through the enzymatic loosening of  microfibrils
  B.	Phase of enlargement	II.	Cell develops into special or particular type of cells.
  C.	Phase of differentiation	III.	New cells are produced by mitosis

  A)
  A-I;    B-II;    C-III done clear
  B)
  A-I;    B-III;   C-II done clear
  C)
  A-III;   B-II;    C-I done clear
  D)
  A-III;   B-I;     C-II done clear
  View Solution play_arrow

• question_answer10)
  In short day plants (SDP) flowering is induced by:
  A)
  Photoperiod less than 12'hours. done clear
  B)
  Photoperiod shorter than initial value and uninterrupted long night. done clear
  C)
  Short photoperiod and interrupted long night. done clear
  D)
  Long night done clear
  View Solution play_arrow

• question_answer11)
  Most appropriate temperature for vernalization is:
  A)
  \[1-6{}^\circ C\]          done clear
  B)
                     \[7{}^\circ C\] done clear
  C)
  \[-6{}^\circ C\]                          done clear
  D)
  \[0{}^\circ C\] done clear
  View Solution play_arrow

• question_answer12)
  Cell elongation in intemode regions of the green plants takes place due to:
  A)
  Ethylene         done clear
  B)
                     Indole acetic acid done clear
  C)
  Cytokinin                                   done clear
  D)
  Gibberellins done clear
  View Solution play_arrow

• question_answer13)
  An enzyme that can stimulate germination of barley seeds is:
  A)
  Protease         done clear
  B)
                     Invertase done clear
  C)
  a-amylase                                  done clear
  D)
  Lipase done clear
  View Solution play_arrow

• question_answer14)
  The natural plant hormones were first isolated from:
  A)
  Corn germ oil and human urine. done clear
  B)
  Cotton fruits, spinach leaves and rice plants. done clear
  C)
  Human urine and rice seedlings. done clear
  D)
  Spinach leaves and fungus Gibberella. done clear
  View Solution play_arrow

• question_answer15)
  Cytokinins are known to:
  A)
  Inhibit cytoplasmic movement done clear
  B)
  Help in retention of chlorophyll done clear
  C)
  Influence water movement done clear
  D)
  Promote abscission layer formation done clear
  View Solution play_arrow

• question_answer16)
  Apical dominance means:
  A)
  Suppression of growth of apical bud by axillary buds. done clear
  B)
  Suppression of growth of axillary buds by the presence of apical bud. done clear
  C)
  Stimulation of growth of axillary buds by removal of apical bud. done clear
  D)
  Inhibition of growth of axillary buds by removal of apical bud. done clear
  View Solution play_arrow

• question_answer17)
  Maximum amount of growth in root occurs:
  A)
  In the presence of light. done clear
  B)
  At its apex. done clear
  C)
               Behind the apex. done clear
  D)
  In the presence of soil. done clear
  View Solution play_arrow

• question_answer18)
  Auxin inhibits the growth of:
  A)
  Apical bud done clear
  B)
  Lateral axillary buds done clear
  C)
  Roots on stem cutting done clear
  D)
  Parthenocarpic development of fruits done clear
  View Solution play_arrow

• question_answer19)
  The growth rate is highest in:
  A)
  Red light         done clear
  B)
                     White light done clear
  C)
  Green light       done clear
  D)
                     Blue light done clear
  View Solution play_arrow

• question_answer20)
  Leaf movement in Mimosa pudica (Sensitive plant) due to:
  A)
  Nerve impulsion done clear
  B)
  Delicate leaves done clear
  C)
  Loss of tissue done clear
  D)
  Turgor change in leaf base done clear
  View Solution play_arrow

• question_answer21)
  Ageing is retarded by:
  A)
  ABA                                         done clear
  B)
  CKN done clear
  C)
  GA                                           done clear
  D)
  \[{{C}_{2}}{{H}_{4}}\] done clear
  View Solution play_arrow

• question_answer22)
  Auxin causes cells to absorb water from hyper-tonic media because:
  A)
  It lowers transpiration rate. done clear
  B)
  It increases rate of cellular respiration causing more production of ATP molecules thus facilitating active water absorption. done clear
  C)
  It increases solute potential of the cells. done clear
  D)
  It increase rate of transpiration. done clear
  View Solution play_arrow

• question_answer23)
  The hormone reducing transpiration rate by inducing stomatal closure is:
  A)
  ABA                                         done clear
  B)
  Ethylene done clear
  C)
  Cytokinin                                   done clear
  D)
  Auxin done clear
  View Solution play_arrow

• question_answer24)
  Richmond-Lang effect is concerned with:
  A)
  Delay in senescence  done clear
  B)
  Breaking dormancy      done clear
  C)
  Suppression of apical dominance done clear
  D)
  Cell elongation done clear
  View Solution play_arrow

• question_answer25)
  Which is employed for artificial ripening of banana fruits?
  A)
  Auxin                                        done clear
  B)
  Coumarin done clear
  C)
  Ethylene        done clear
  D)
                     Cytokinin done clear
  View Solution play_arrow

• question_answer26)
  The movement of auxin is largely:
  A)
  Both acropetal and basipetal done clear
  B)
  Basipetal done clear
  C)
  Centripetal done clear
  D)
  Acropetal done clear
  View Solution play_arrow

• question_answer27)
  I.A.A. mainly inhibits growth of:
  A)
  Root done clear
  B)
  Leaf done clear
  C)
  Shoot done clear
  D)
  Generally whole plant done clear
  View Solution play_arrow

• question_answer28)
  Match column-I with column-II and select the correct answer using the codes given below.

  	Column-I		Column-II
  A.	Xanthium	I.	Its flower opens at higher temperature.
  B.	Crocus	II.	Earlier and higher obtained by keeping its seed at low temperature between 1 \[{}^\circ C\]and \[10{}^\circ C\]
  C.	Millet	III.	Growth regulator can be obtained from one of the parts of it.
  D.	Coconut	IV.	It produces flower, when period of light available is less than critical period.

  A)
  A - IV;    B - I;    C - II;     D - III done clear
  B)
  A - IV;    B - II;   C - III;    D - I done clear
  C)
  A - IV;    B - III;   C - II;    D - I done clear
  D)
  A - I;      B - II;    C - III;   D - IV done clear
  View Solution play_arrow

• question_answer29)
  The names of many organisms are associated with classical studies in some areas of biology. Which of the following does not show such matching?
  A)
  Pea-Laws of heredity done clear
  B)
  Acetabularia-Relationship between nucleus and cytoplasm done clear
  C)
  E. coli - Genetic engineering done clear
  D)
  Barley seeds- Role of phytochrome done clear
  View Solution play_arrow

• question_answer30)
  Which of the following statements are false?

  (i) \[{{C}_{2}}{{H}_{4}}\] breaks seed and bud dormancy.

  (ii) ABA stimulates the opening of stomata.

  (iii) Cytokinin is primarily concerned with cell division.

  (iv) ABA is synergistic to GA.

  A)
  (i),(ii), and (iii) done clear
  B)
                     (i) and (ii) done clear
  C)
  (ii) and (iv)                                 done clear
  D)
  (i) and (iii) done clear
  View Solution play_arrow

• question_answer31)
  The plants bend towards light because:
  A)
  The stem likes sunlight. done clear
  B)
  The roots send the message to the stem to do so. done clear
  C)
  Due to secretion of growth promoting substances at the tip. done clear
  D)
  The food material is translocated from leaves to stem causing bending. done clear
  View Solution play_arrow

• question_answer32)
  Phytotron is device for:   
  A)
  Induction of mutations done clear
  B)
  Measuring wind velocity done clear
  C)
  Measuring electron flow done clear
  D)
  Growing plants under controlled conditions. done clear
  View Solution play_arrow

• question_answer33)
  Which of the following hormones can replace vernalisation?
  A)
  Ethylene                                    done clear
  B)
  Gibberellins done clear
  C)
  Cytokinins                                  done clear
  D)
  Auxins done clear
  View Solution play_arrow

• question_answer34)
  When a dark period in SDP is interrupted by a brief exposure of light, the plant:
  A)
  Will not flower at all done clear
  B)
  Flowers immediately done clear
  C)
  Gives more flowers done clear
  D)
  Turns into LDP done clear
  View Solution play_arrow

• question_answer35)
  Stem elongation is affected by:
  A)
  Gibberellin and florigen done clear
  B)
  Auxin and gibberellin done clear
  C)
  Florigen and kinin done clear
  D)
  Kinin and auxin done clear
  View Solution play_arrow

• question_answer36)
  Parthenocarpic tomato fruits can be produce
  A)
  Raising the plants from vernalised seeds. done clear
  B)
  Treating the plants with phenylmercuric acetate. done clear
  C)
  Removing androecium of flowers before pollen grains are released. done clear
  D)
  Treating the plants with low concentrations of gibberellic acid and auxins. done clear
  View Solution play_arrow

• question_answer37)
  Induction of rooting in stem cutting by auxin treatment would be beneficial in which of the following?               
  A)
  Marchantia                                done clear
  B)
  Wheat done clear
  C)
  Cuscuta                                     done clear
  D)
  Bougainvillea done clear
  View Solution play_arrow

• question_answer38)
  The growth of the plant body takes place by:
  A)
  Lateral meristems done clear
  B)
  Apical meristems done clear
  C)
  Both apical and lateral meristems done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer39)
  Match Column-I with Column-II and select the correct answer using the codes given below:

  	Column-I		Column-II
  A.	C. Darwin and F. Darwin	I.	Cytokinin
  B.	Miller and Skoog	II.	ABA
  C.	Addicott et. al.	III.	\[{{C}_{2}}{{H}_{4}}\]
  D.	Kurosawa	IV.	Auxin
  E.		V.	GA

  A)
  A-IV;    B-I;       C-II;    D-V done clear
  B)
  A-IV;    B-I;       C-V;    D-II done clear
  C)
  A-III;     B-I;       C-II;    D-IV done clear
  D)
  A-V;     B-IV;     C-I;     D-III done clear
  View Solution play_arrow

• question_answer40)
  What will be the effect on phytochrome in a plant subjected to continuous red light?
  A)
  Level of phytochrome decreases done clear
  B)
  Phytochrome is destroyed done clear
  C)
  Phytochrome synthesis increases done clear
  D)
  Destruction and synthesis of phytochrome remain in equilibrium. done clear
  View Solution play_arrow

• question_answer41)
  Which one of the following is a long day plant?
  A)
  Bajra                                         done clear
  B)
  Soyabean done clear
  C)
  Tobacco                                    done clear
  D)
  Wheat done clear
  View Solution play_arrow

• question_answer42)
  Seedless fruits can be obtained by treating the unpollinated ovaries with:
  A)
  Colchicine                                  done clear
  B)
  Sucrose solution done clear
  C)
  Hormones       done clear
  D)
                     Pure lanolin done clear
  View Solution play_arrow

• question_answer43)
  Which of the following test will you perform to demonstrate the presence of gibberellin?
  A)
  Bolting of cabbage done clear
  B)
  Differentiation of shoots in tobacco callus culture done clear
  C)
  Rapid division in carrot cells done clear
  D)
  Elongation of Avena coleoptile done clear
  View Solution play_arrow

• question_answer44)
  Which of the following controls flowering I long day plants and sex expression in certain species?    
  A)
  Auxin                                        done clear
  B)
  Cytokinin done clear
  C)
  Gibberellin       done clear
  D)
                     Ethylene done clear
  View Solution play_arrow

• question_answer45)
  Which combination of gases is suitable for fruit ripening?
  A)
  80% \[C{{O}_{2}}\] and 20%     \[C{{H}_{2}}\] done clear
  B)
  80% \[C{{H}_{4}}\] and 20% \[C{{O}_{2}}\] done clear
  C)
  80% \[C{{O}_{2}}\] and 20% \[{{O}_{2}}\] done clear
  D)
  80% \[{{C}_{2}}{{H}_{4}}\] and 20% \[C{{O}_{2}}\] done clear
  View Solution play_arrow

• question_answer46)
  To avoid excessive water loss during severe drought stress, the closure of stomata is signaled by the production of:        
  A)
  IAA                                           done clear
  B)
  NAA done clear
  C)
  ABA                                         done clear
  D)
  IBA done clear
  View Solution play_arrow

• question_answer47)
  In tissue culture, roots can be induced by:
  A)
  No cytokinin and only auxins done clear
  B)
  Higher concentration of cytokinin and lower concentration of auxins. done clear
  C)
  Lower concentration of cytokinin and higher concentration of auxins. done clear
  D)
  Only cytokinin and no auxins. done clear
  View Solution play_arrow

• question_answer48)
  Which one of the following is a naturally occurring growth inhibitor?
  A)
  IAA                                           done clear
  B)
  ABA done clear
  C)
  NAA                                         done clear
  D)
  GA done clear
  View Solution play_arrow

• question_answer49)
  "Foolish Seedling or Bakane" disease of rice led to the discovery of:
  A)
  IAA                                           done clear
  B)
  GA done clear
  C)
  ABA                                         done clear
  D)
  2, 4-D done clear
  View Solution play_arrow

• question_answer50)
  Senescence as an active developmental cellular process in the growth and functioning of a flowering plant, is indicated in:
  A)
  Vessels and tracheid differentiation done clear
  B)
  Leaf abscission done clear
  C)
  Annual plants done clear
  D)
  Floral parts done clear
  View Solution play_arrow

• question_answer51)
  Which of the following triggers seed germination?
  A)
  Seeds imbibe in water. done clear
  B)
  Seeds released from fruit. done clear
  C)
  Seeds undergo chemical changes. done clear
  D)
  All of the above done clear
  View Solution play_arrow

• question_answer52)
  The stimulus for geotropism in roots is perceived by:
  A)
  Root cap                                    done clear
  B)
  Quiescent centre done clear
  C)
  Root tip                                     done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer53)
  In callus culture, roots can be induced by the supply of:
  A)
  Auxin                                        done clear
  B)
  Cytokinin done clear
  C)
  Gibberellin       done clear
  D)
                     Ethylene done clear
  View Solution play_arrow

• question_answer54)
  Which of the following shows the correct graph of arithmetic growth?          
  A)
     done clear
  B)
  done clear
  C)
  done clear
  D)
    done clear
  View Solution play_arrow

• question_answer55)
  Exponential growth cannot be sustained for much time due to :

  (i) limited space and nutrient.

  (ii) Accumulation of toxic agent.

  (iii) Unlimited space and nutrient.

  (iv) Accumulation of nutrient agent.

  A)
  (i) and (iii)       done clear
  B)
                     (iii) and (iv) done clear
  C)
  (i) and (ii)        done clear
  D)
  (iv) and (ii) done clear
  View Solution play_arrow

• question_answer56)
  Which one is a short day plant?
  A)
  Brassica campestris done clear
  B)
  Raphanus sativus done clear
  C)
  Glycine max done clear
  D)
  Papaver somniferum done clear
  View Solution play_arrow

• question_answer57)
  One set of a plant was grown at 12 hours day and 12 hours night period cycles and it flowered while in the other set night phase was interrupted by flash of light and it did not produce flower. Under which one of the following categories will you place this plant?    
  A)
  Long day       done clear
  B)
                     Darkness neutral done clear
  C)
  Day neutral      done clear
  D)
                     Short day done clear
  View Solution play_arrow

• question_answer58)
  What is the site of vernalisation?
  A)
  Stem                                         done clear
  B)
  Leaves done clear
  C)
  Roots                                        done clear
  D)
  Apical meristem done clear
  View Solution play_arrow

• question_answer59)
  Maryland Mammoth Tobacco is a short day plant. Its critical duration of darkness is 10 hours. Under which of the following conditions will Maryland mammoth tobacco not flower?
  A)
    done clear
  B)
  done clear
  C)
    done clear
  D)
    done clear
  View Solution play_arrow

• question_answer60)
  What will be the effect on phytochrome in a plant subjected to continuous red light?
  A)
  Level of phytochrome decreases done clear
  B)
  Phytochrome is destroyed done clear
  C)
  Phytochrome synthesis increases done clear
  D)
  Destruction and synthesis of phytochrome remain in equilibrium. done clear
  View Solution play_arrow

• question_answer61)
  If a flash of light is provided in the middle of dark period to a SDP then the plant is likely
  A)
  To flower                                   done clear
  B)
  Not to flower done clear
  C)
  Produce more flowers                  done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer62)
  Which of the following statement regarding Gibberellin are correct?

  (I) \[G{{A}_{3}}\] is used to speed up the mailing process in brewing industry.

  (ii) \[G{{A}_{3}}\] is a commercially available gibberellin.

  (iii) Spraying juvenile conifers with \[G{{A}_{s}}\] hastens maturity, thus leading to early seed production.

  (iv) \[G{{A}_{3}}\] cannot increase the length of internode of sugar cane.

  A)
  (i), (ii), and (iii)   done clear
  B)
  (i) and (ii) done clear
  C)
  (ii) and (iv)       done clear
  D)
                     (i) and (iii) done clear
  View Solution play_arrow

• question_answer63)
  Which of the following statements are incorrect options.

  (i) Primary growth involves increase in girth of plants.

  (ii) Increase in girth of plants occurs due to apical meristem.

  (iii) Secondary growth of plants occurs due to lateral meristem.

  (iv) Vascular cambium and cork cambium are the lateral meristems of plants.

  (v) Elongation of a plant along the axis is called primary growth.

  A)
  (i) and (ii)       done clear
  B)
                     (iii) and (iv) done clear
  C)
  (iv) and (v)      done clear
  D)
                     (i) and (v) done clear
  View Solution play_arrow

• question_answer64)
  Which of the following does not normally occur when an etiolated seedling is exposed to light?
  A)
  Chlorophyll synthesis begins. done clear
  B)
  The rate of shoot elongation increases. done clear
  C)
  The hypocotyl hook straightens (in species with a hypocotyl hook). done clear
  D)
  Phytochrome \[{{\operatorname{P}}_{r}}\] is converted to\[{{\operatorname{P}}_{fr}}\].   done clear
  View Solution play_arrow

• question_answer65)
  Which plant hormone promotes seed, bud dormancy and causes stomatal closure?
  A)
  IAA                                           done clear
  B)
  Abscisic acid done clear
  C)
  GA                                           done clear
  D)
  Cytokinin done clear
  View Solution play_arrow

• question_answer66)
  Which of the following hormone breaks bud dormancy of potato tuber?  
  A)
  Gibberellin      done clear
  B)
                     IAA done clear
  C)
  ABA                                         done clear
  D)
  Zeatin done clear
  View Solution play_arrow

• question_answer67)
  Dwarfness can be controlled by treating the plant with:
  A)
  Cytokinin                                   done clear
  B)
  Gibberellic acid done clear
  C)
  Auxin                                        done clear
  D)
  Antigibberellin done clear
  View Solution play_arrow

• question_answer68)
  Florigen is produced in the region of:
  A)
  Leaves           done clear
  B)
                     Fruit done clear
  C)
  Root                                          done clear
  D)
  Trunk done clear
  View Solution play_arrow

• question_answer69)
  Cell elongation in internodal regions of the green plants takes place due to:
  A)
  Indole acetic acid                        done clear
  B)
  Cytokinins done clear
  C)
  Gibberellins                                done clear
  D)
  Ethylene done clear
  View Solution play_arrow

• question_answer70)
  Which one increases in the absence of light?
  A)
  Uptake of minerals     done clear
  B)
  Uptake of water done clear
  C)
  Elongation of internodes done clear
  D)
  Ascent of sap done clear
  View Solution play_arrow

• question_answer71)
  The potent weed killer is:
  A)
  Gibberellin       done clear
  B)
                     2, 4-D done clear
  C)
  Abscisic acid     done clear
  D)
                     Ethylene done clear
  View Solution play_arrow

• question_answer72)
  Which one of the following acids is a derivative of carotenoids?
  A)
  Indole-3 -acetic acid                    done clear
  B)
  Gibberellic acid done clear
  C)
  Abscisic acid                              done clear
  D)
  Indole butyric acid done clear
  View Solution play_arrow

• question_answer73)
  Which of the following is not characteristic of changes associated with winter dormancy in many species of temperate plants?
  A)
  Development of wax-covered bud scales done clear
  B)
  High concentration of abscisic acid in buds done clear
  C)
  Decrease in solute concentration of sap done clear
  D)
  Leaf abscission done clear
  View Solution play_arrow

• question_answer74)
  Which of the following growth substance act as a stimulant during nodule formation in leguminous plant?
  A)
  Ethylene                                    done clear
  B)
  ABA done clear
  C)
  IAA                                           done clear
  D)
  Morphactin done clear
  View Solution play_arrow

• question_answer75)
  Primary precursor of I.A.A is:
  A)
  Phenylalanine done clear
  B)
                     Tyrosine done clear
  C)
  Tryptophan                                done clear
  D)
  Valine done clear
  View Solution play_arrow

• question_answer76)
  Pineapple can be made to flower in off season by:
  A)
  Ethylene done clear
  B)
  Zeatin done clear
  C)
  Naphthalene Acetic Acid (NAA) done clear
  D)
  Temperature done clear
  View Solution play_arrow

• question_answer77)
  When a plant is not reproducing, most of the cytokinins are produced in its:
  A)
  Lateral buds                               done clear
  B)
  Shoot apex done clear
  C)
  Roots                                        done clear
  D)
  Leaves done clear
  View Solution play_arrow

• question_answer78)
  Etiolated seedlings are produced by germinating seeds and keeping them in total darkness. Under which of the following conditions will plants kept in the dark-begin to synthesise chlorophyll?
  A)
  After being given a pulse of blue light. done clear
  B)
  After being given a pulse of red light. done clear
  C)
  After being given a pulse of red light followed by a pulse of far-red light. done clear
  D)
  After being given a pulse of far-red light followed by a pulse of red light. done clear
  View Solution play_arrow