Question

If the roots of the plants are growing towards nitrate concentrated region of the soil , then it is ________.
(A) Phototropism (B)Hydrotropism
(C)thigrnotropism
(D)Chemotropism
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Answer 1

If the roots of the plants are growing towards nitrate concentrated region of the soil , then it is  Chemotropism.

Explanation:

• Chemotropism in the plants led to the growth of pollen tubes towards the ovules and thus helps in fertilization of plants and helps in reproduction process.
• The growth of a plant part due to chemical stimulus is known as chemotropism 'Chemotropism is growth of organisms such as bacteria and plants, navigated by chemical stimulus from outside of the organism or organism's part.  
• An example is the growth of a pollen tube down the style during fertilization in response to the presence of sugars in the style. "chemotropism."

Learn more about chemotropism

Give example of negative chemotropism in plant with explanation.

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Define hydrotropism and chemotropism

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Answer 2

If the roots of the plants are growing towards nitrate concentrated region of the soil it is called chemotropism.

Option (D) is correct.

Explanation:

• If the roots of the plants are growing towards nitrate concentrated region of the soil it is called chemotropism.
• In chemotropism, the organism are stimulated by the chemicals that are present in the outside environment and these chemicals navigate the plants during their growth phase.
• This phenomenon can also be named as a chemical gradient influence on the plant's growth process.