NCERT/Class 11/Biology/Plant Growth and Development

Plant Growth and Development

Class 11 · Biology

90 questions39 easy33 medium18 hard

Sample Questions

Q1.GA3 is used in the brewing industry to:

  • AIncrease alcohol content
  • BSpeed up the malting process
  • CImprove the taste of beer
  • DPrevent fermentation

Q2.Gibberellins cause fruits like apple to:

  • ARipen faster
  • BElongate and improve their shape
  • CDrop prematurely
  • DBecome seedless

Q3.Ethylene is a:

  • ASolid PGR
  • BLiquid PGR
  • CSimple gaseous PGR
  • DComplex protein hormone

Q4.Ethylene promotes female flowers in cucumbers. A farmer growing cucumbers for maximum yield would use ethylene to:

  • AIncrease male flowers for better pollination
  • BIncrease female flowers to increase fruit yield
  • CDelay fruit ripening
  • DPromote root growth only

Q5.The five major groups of PGRs are:

  • AAuxins, gibberellins, cytokinins, abscisic acid, ethylene
  • BAuxins, gibberellins, cytokinins, florigen, ethylene
  • CAuxins, gibberellins, brassinosteroids, abscisic acid, ethylene
  • DAuxins, gibberellins, cytokinins, abscisic acid, jasmonic acid

Q6.This is a sample question to preview what you'll get in the full practice test...

  • A. Option one
  • B. Option two
  • C. Option three
  • D. Option four
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Concepts Covered

Abscisic AcidAuxinsConditions for GrowthCytokininsDevelopment and PlasticityDifferentiation, Dedifferentiation, RedifferentiationEthyleneGibberellinsGrowth Definition and CharacteristicsGrowth MeasurementGrowth RatesIndeterminate Growth and MeristemsPhases of GrowthPlant Growth Regulators Overview

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