NEET Biology Video Course

Plant Growth and Development-(Code RPG)

Class XI 11 Biology Plant Growth and Development- Part 1 (Growth)-RPG1

  • Plant growth generally is indeterminate

  • Measurement of growth

  • Phases of growth

  • Cell division

  • Cell enlargement

  • Cell maturation

  • Demonstration of phases of growth

  • Growth rates

  • Absolute growth rate

  • Relative growth rate

Class XI 11 Biology Plant Growth and Development- Part 2 (Conditions of growth)-RPG2

  • Supply of nutrients​

  • C/N ratio

  • Temperature

  • Water

  • light

Class XI 11 Biology Plant Growth and Development- Part 3 (Differentiation, Dedifferentiation and Redifferentiation)-RPG3

Class XI 11 Biology Plant Growth and Development- Part 4 (Development)-RPG4

Class XI 11 Biology Plant Growth and Development- Part 5 (Growth Hormones and Growth Regulators)-RPG5

  • Auxins

  • Discovery

  • Types of auxins

  • Natural auxins

  • Synthetic auxins

  • Physiological effects of auxins

  • Cell elongation and longitudinal growth

  • Cell division in the cambium

  • Cell division and tissue culture

  • Vascular tissue differentiation

  • Root growth and root initiation

  • Apical dominance

  • Prevention of abscission layer

  • Parthenocarpy

  • Auxins used as herbicides

  • Enzymatic activity

  • Flower initiation

  • Respiration

  • Plant growth movements

  • Other effects

  • Bioassay of auxins (Avena coleoptile test)

Class XI 11 Biology Plant Growth and Development- Part 6 (Gibberllins)-RPG6

  • Discovery

  • Physiological effects of gibberllins

  • Elongation of stem

  • Reversal of dwarfism

  • Bolting and flowering

  • Substituting the cold treatments

  • Cell division in the cambium

  • Parthenocarpy

  • Seed germination

  • Breaking of dormancy

  •  De-Novo synthesis of hydrolytic enzymes

  • Other effects

  • Bioassay of gibberllins (Lettuce Hypocotyle test)

Class XI 11 Biology Plant Growth and Development- Part 7 (Cyokinins)-RPG7

  • Discovery

  • Zeatin

  • Physiological effects of cytokinins

  •  Cell division

  • Physiological effects of cytokinins

  • Cell division

  • Cell enlargement

  • Initiation of interfascicular cambium

  • Morphogenesis

  • Counteraction of apical dominance

  • Breaking of dormancy

  • Delay of senescence (Richmon-Lang effect)

  • Accumulation and translocation of solutes

  • Other effects

Class XI 11 Biology Plant Growth and Development- Part 6 (Ethylene)-RPG6

  • Physiological effects of ethylene

  • Inhibitory effect on growth

  • Tropic responses

  • Suppression of bud growth

  • Fruit growth and ripening

  • Abscission

  • Flowering

  • Root initiation

  • Dormancy

  • Leaf bending (epinasty)

  • Senescence

  • Sex expression

  • Negative feedback

Class XI 11 Biology Plant Growth and Development- Part 7 (Abscisic Acid ABA)-RPG7

  • Physiological effects of abscisic acid

  • Bud dormancy

  • Inhibition of growth

  • Seed development and germination

  • Abscission

  • Geotropism

  • Stomatal closing

  • Role in water stress

  • Senescence

  • Other effects

Class XI 11 Biology Plant Growth and Development- Part 8 (Photoperiodism and Flowering)-RPG8

  • Classification of photoperiodic responses

  • Short day plants (SDP)

  • Long day plants (LDP)

  • Day neutral

  • Characteristics of photoperiodic responses

  • Genetic control

  • Critical day length

  • Inductive cycle

  • Perception of photoperiodic stimulus

  • Role of phytochrome in the flower initiation

  • The flowering stimulus = ‘florigen’

Class XI 11 Biology Plant Growth and Development- Part 9 (Vernalisation)-RPG9

  • Site for vernalization

  • The vernalization stimulus

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