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The plant part which exhibits negative g...

The plant part which exhibits negative geotropism is:

A

root

B

stem

C

branch

D

leaves

Text Solution

Verified by Experts

The correct Answer is:
B
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(a) Define geotropism. Give one example of geotropism. (b) What is meant by 'positive geotropism' and negative geotropism? Give one example of each type. Draw a labelled diagram to illustrate your answer indicating the plant part which shows positive geotropism and the plant part which shown negative geotropism. (c) Name one plant part which exhibits positive thigmotropism.

A plotted plant is growing in a transparent glass jar. In this plant, X and Y are the two growing parts having a lot of meristematic tissue. It is observed that the part X of this plant exhibits positive geotropism but negative phototropism. On the other hand, part Y of this plant exhibits negative geotropism but positive phototropism. (a) Name the part X of plant. (b) Name the part Y of plant. (c) Which part of the plant, X or Y, will exhibit positive hydrotropism? (d) Which part of the plant, X or Y, can have tendrils on it? (e) Which phytochormone causes the part X to exhibit negative phototropism?

Knowledge Check

  • Root shows negative geotropism in:

    A
    Pothos
    B
    Ficus
    C
    Rhizophora
    D
    Grasses

  • Root shows negative geotropic in

    A
    Pothos
    B
    Ficus
    C
    Acanthorhiza
    D
    Sonneratia

  • The element that exhibits negative oxidatio0n state In IIIA group elements is

    A
    B
    B
    Al
    C
    Ga
    D
    Tl

    • Similar Questions

    Explore conceptually related problems

    (a) What is meant by positive tropism and negative tropism? Explain with examples. (b) Define thigmotropism. Give one example of thigmotropism. (c) What is the difference between thigmotropism and thigmonasty? Name one plant which exhibits thigmotropism and one plant which exhibits thigmonasty. What behaviour (or responses) of these plants make you think that they exhibit thigmotropism and thigmonasty respectively?

    Negative geotropism is observed in

    Give one example each of a plant part: (a) which is positively hydrotropic as well as positively geotropic (b) which is positively phototropic but negatively geotropic.

    Exampe of positive geotropism is

    Example of positive geotropism is

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