NEET Biology - New - Plant Growth and Development

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Question - 1

You are given a tissue with its potential for difference in an artificial culture. Which of the following pairs of hormones would you add to the medium to secure shoots as well as roots?

  • A Auxin and abscisic acid
  • B Gibberellin and abscisic
  • C IAA and gibberellin
  • D Auxin and cytokinin

Question - 2

The Avena curvature is used for bioassay of :

  • A ABA
  • B GA3
  • C IAA
  • D Ethylene

Question - 3

Hormone antagonist to gibberellins is

  • A IAA
  • B ABA
  • C Zeatin
  • D Ethylene

Question - 4

Photoperiodism was first characterized in:

  • A Cotton
  • B Tobacco
  • C Potato
  • D Tomato

Question - 5

The term 'auxin precursor' refers to

  • A raw material used in the synthesis of auxin
  • B compound which inhibits the action of auxin
  • C artificially synthesised auxin
  • D active form of auxin.

Question - 6

An irreversible or permanent increase in size, mass or volume of a cell, organ or organism is called as ____________

  • A growth
  • B differentiation
  • C dedifferentiation
  • D development

Question - 7

Growth in plants is

  • A only determinate
  • B only indeterminate
  • C mostly determinate
  • D both determinate and indeterminate

Question - 8

Meristematic cells are characterised by

  • A thin cellulosic cell walls
  • B dense protoplasm
  • C prominent nuclei
  • D all of these

Question - 9

Increased vacuolation, cell enlargement and new cell wall deposition are the characteristics of cells in __________ phase of growth.

  • A meristematic
  • B elongation
  • C maturation
  • D differentiation

Question - 10

Vascular cambium and cork cambium are

  • A lateral meristems
  • B intercalary meristems
  • C primary meristems
  • D apical meristems