Plant Growth and Development Quiz | Plant Growth and Development Short Questions and Answers

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Questions
41 Temperature range for plant growth is
A 25°-35°C
B 0°-35°C
C 10°-50°C
D 0°-20°C

Answer: 0°-35°C
42 During wall enlargement new wall materials are inserted amongst the older ones.The phenomenon is
A Accretion
B Integration
C Intussusception
D Interpolation

Answer: Intussusception
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43 Name the scientist who discovered that decapitated coleoptile would resume photo sensitivity and growth if served tip is reattached through a gelatin disc
A Darwin
B Van Overbeek
C Boyson Jensen
D Paal

Answer: Boyson Jensen
44 Exponential growth is shown during
A Lag phase
B Log Phase
C Maturation phase
D Senescence phase

Answer: Log Phase
45 Correct sequence of different stage of development is
A Fruiting – flowering-juvenility-germination
B Germination-juvenility-flowering-fruiting
C Flowering-fruiting-juvenility-germination
D Juvenility-flowering-fruiting-germination

Answer: Germination-juvenility-flowering-fruiting
46 Current sequence of different phases of growth is
A Cell division-cell differentiation- cell elongation
B Cell differentiation-cell division-cell elongation
C Cell elongation-cell division-cell differentiation
D Cell division-cell elongation-cell differentiation

Answer: Cell division-cell elongation-cell differentiation
47 A decapitated plant exposed to unilateral light
A Bends away from source of illumination
B Bends towards the source of light
C Shows zigzag curvature
D Does not show bending moment

Answer: Does not show bending moment
48 Gibberellins take part in
A Bolting of rosette plants
B Replacing long day requirement
C Overcoming genetic dwarfism
D All the above

Answer: All the above
49 Ferulic acid,coumarin and hesperidin are
A Secondary plant products
B Hormones
C Enzymes
D Vitamins

Answer: Secondary plant products
50 Differentiation of callus requires a specific ratio of two hormones
A Auxin and gibberellin
B Auxin and abscisic acid
C Gibberellin and abscisic acid
D IAA and cytokinin

Answer: IAA and cytokinin
51 Rapid growth of flowering axis in many plants is caused by
A Lower level of abscisic acid
B Higher level of auxin
C Higher level of gibberellin
D Lower level of auxin

Answer: Higher level of gibberellin
52 Hormone involved in Breaking dormancy of winter Buds is
A Ethylene
B Gibberellin
C Auxin
D Cytokinin

Answer: Auxin
53 The term Yarovization was coined by
A Lysenko
B Melba
C Yabuta
D Kohl and Haagen – Smit

Answer: Lysenko
54 Avena coleoptile test is for which of the following hormone
A GA
B ABA
C IAA
D NAA

Answer: IAA
55 Seedless Tomatoes are produced by
A Supplying radioactive compounds
B Spraying hormones on flower
C Propagating tomato plants from cuttings
D Growing tomato plants in mineral solution

Answer: Spraying hormones on flower
56 Apples are generally wrapped in waxed paper to
A Prevent sunlight from changing its colour
B Prevent aerobic respiration by checking the entry of oxygen
C Prevent ethylene formation that hastens ripening
D Make the apples look costly

Answer: Prevent ethylene formation that hastens ripening
57 The response of plants to light was first of all discovered by
A J.B.Lamarck
B Darwin
C Thimann
D F.W.Went

Answer: Darwin
58 Cytokinins are generally
A Acids
B Aminopurines
C Phenols
D Glucosides

Answer: Aminopurines
59 Delay in Senescence is caused by the spray of
A IBA
B GA
C Cytokinin
D ABA

Answer: Cytokinin
60 The growth hormone, gibberellin was discovered by
A Yabuta and Sumiki
B Dutrochet and Folk
C Donoho and walker
D Hadhmioto and Rappaport

Answer: Yabuta and Sumiki

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