Growth towards a light source is called positive phototropism.

True

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False

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Solution

The correct option is A True
Growth towards a light source is called positive phototropism, while growth away from light is called negative phototropism.

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Match the following:

$\begin{matrix} A & B (1) Growth of sunflower towards a light source & (i) Chemotropism (2) Growth of tree roots towards earth & (ii) Hydrotropism (3) Growth of plant roots towards or away from moisture & (iii) Phototropism (4) Growth of a plant part in response to a chemical stimulus & (iv) Geotropism \end{matrix}$

Phototropism is the response of parts of a plant towards a source of___ .

Question 18
The growth of pollen tubes towards ovules is due to

(a) hydrotropism
(b) chemotropism
(c) geotropism
(d) phototropism

The movement of a shoot towards light is:

(a) geotropism

(b) hydrotropism

(d) phototropism

Q. Assertion : Phototropism is a directional growth movement.
Reason : Phototrophic movement occur in the direction of light

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Growth towards a light source is called positive phototropism.

The correct option is A TrueGrowth towards a light source is called positive phototropism, while growth away from light is called negative phototropism.

The correct option is A True
Growth towards a light source is called positive phototropism, while growth away from light is called negative phototropism.