Home
Class 10
BIOLOGY
How does phototropism occur in plants ?...

How does phototropism occur in plants ?

Text Solution

Verified by Experts

The movement of plant in response to light is called phototropism. Stem shows positive phototropism as follows:
When growing plants detect light, a hormone called auxin, synthesized at the shoot tip help the cell to grow longer. When light is coming from outside of the plant, auxin diffuses towards the shady side of the shoot. This concentration of auxin stimulates the cell to grow longer on the side of the shoot which is away form light. Thus, the plant appears to bend towards light.
Promotional Banner

Topper's Solved these Questions

  • CONTROL AND COORDINATION

    CPC CAMBRIDGE PUBLICATION|Exercise Additional Questions (Choose the Correct Answer)|12 Videos

  • CONTROL AND COORDINATION

    CPC CAMBRIDGE PUBLICATION|Exercise Additional Questions (Fill in the blanks)|6 Videos

  • CONTROL AND COORDINATION

    CPC CAMBRIDGE PUBLICATION|Exercise Unit Test (Answer the following)|6 Videos

  • CPC MODEL QUESTION PAPER -3

    CPC CAMBRIDGE PUBLICATION|Exercise ANSWER THE FOLLOWING QUESTIONS|34 Videos

Similar Questions

Explore conceptually related problems

What is pollination ? How does it occur in plants? How does pollination lead to fertilization? Explain.

Bone marrow does not occur in

Define Phototropism.

How does magnesium occur in nature? How is the metal extracted from its Ore?

What is multiple fission? How does it occur in an organism? Explain briefly. Name one organism which exhibits this type of reproduction.

[A] : Peroxisomes occur , both in plants and animals . [R] : Peroxisome is a microbody .

How does chemical coordination occur in plants?

Name the plant hormone that promotes growth. How do this hormones bring about phototropism in the shoots of a plant ?

How does cytokinesis in plant cells differ from that in animal cells?