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In the diagram, the part marked I will contain a high concentration of

Biology
JAMB 2007

In the diagram, the part marked I will contain a high concentration of

  • A. ascorbic acid
  • B. abscisic acid
  • C. ethylene
  • D. auxin
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Correct Answer: Option D
Explanation

Abscisic acid (ABA) is found in the roots and leaves of plants, including seedlings. ABA is a plant hormone that helps plants respond to environmental stress and developmental processes. 

Ascorbic acid, also known as vitamin C, is found in all cell compartments of plants, including the cell wall, chloroplasts, and cytosol. 

Ethylene is found in all parts of a plant, including seedlings. 

Auxin alters the plant wall plasticity making it easier for the plant to grow upwards. Auxin is a plant hormone found in the roots of seedlings. Auxin is produced in the tips of the roots and shoots, and it can diffuse to other parts of the plant. 

There is an explanation video available below.


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Explanation Video

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