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Science / Control and Coordination in Plants

Science / Control and Coordination in Plants

When you step out in bright sunlight, you partly close your eyes to keep away the bright light. You may start sweating as the temperature rises. These are coordinated responses to stimuli. In animals the responses are quicker than in plants.

Movements in plants:

  1. Trophic movement - growth movement towards or away from stimulus
  2. Nastic movement  - non growth movement ,independent of stimulus

Types of trophic movements (tropism)

  • Phototropism (light)
  • Hydrotropism (water )
  • Geotropism (gravity)
  • Chemotropism (chemicals)

You know that growth in humans is controlled by hormones, similarly it is also controlled in plants by plant hormones.

Plant hormones are auxins (promoteds cell elongation ), gibberellins (promotes growth), cytokinins (promotes cell division), abscisic acid (inhibits growth).

Exercises
Topics
Exercises
Topics
  • Movement in Plants - SmartTest

    A SmartTest on Movement in Plants

    • Questions: 10

    Plant harmones - SmartTest

    A SmartTest on Plant Harmones

    • Questions: 10
    • Introduction to Control and Coordination in plants
    • Understanding coordination in plants
    • Immediate Response to Stimulus
    • Movement Due to Growth
    • Review of Control and Coordination in plants
    • Plant Hormones

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