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How does phototropism occur in plants?...

How does phototropism occur in plants?

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Photo means light. The response of plant towards the enviromental triggers, light which change the directions of the plant parts grow in is called phototropism. The directional, or tropic, movements can be either towards the light, or away from it. So, in two different kinds of phototropic movements.shoots respond by bending towards lightt wile roots respond by bending away from it. For example. Sunlight bends towards the sun from where the light is coming. This is the response of sunflower towards the plants
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(a) Define phototropism. Give one example of phototropism. (b) How does phototropism occur in a plant stem (or shoot)? Explain with the help of labelled diagrams. (c) What is meant by positive phototropism and negative phototropism? Give one example of each type.

How does respiration occur in plants? Write a note on it.

Knowledge Check

  • Negative phototropism occurs in

    A
    Root
    B
    Stem
    C
    Leaf
    D
    Flower
  • Negative phototropism occurs in

    A
    Root
    B
    Stem
    C
    Leaf
    D
    Flower.
  • At which wavelength of light does the least photosynthesis occur in plants ?

    A
    Violet
    B
    Blue
    C
    Green
    D
    Red
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