How do auxin transport inhibitors affect meristematic shoots?

How do auxin transport inhibitors affect meristematic shoots?

• A. They promote excessive auxin concentration
• B. They eliminate growth in shoots
• C. They enhance branching in plants
• D. They interfere with nutrient uptake

Answer: (A)

Auxin transport inhibitors work by blocking the movement of auxin, a key plant hormone responsible for various growth processes, including cell elongation and division in plant shoots. When these inhibitors are applied, they disrupt the normal distribution of auxins within the plant. As a result, the concentration of auxin can become excessively high in certain areas of the plant where it accumulates. This excessive concentration can lead to abnormal growth patterns. For example, while auxin typically promotes growth in apical regions and suppresses lateral bud growth, its abnormal accumulation can inhibit proper shoot development and lead to problems with growth regulation. This unique phenomenon, where the natural flow and regulation of auxin are disturbed, highlights the important role of auxin transport in maintaining healthy growth in meristematic tissues of shoots. In contrast, the other options do not align with the function of auxin transport inhibitors as they do not inherently lead to enhanced branching, complete elimination of growth, or influence on nutrient uptake directly.

Auxin transport inhibitors work by blocking the movement of auxin, a key plant hormone responsible for various growth processes, including cell elongation and division in plant shoots. When these inhibitors are applied, they disrupt the normal distribution of auxins within the plant.

As a result, the concentration of auxin can become excessively high in certain areas of the plant where it accumulates. This excessive concentration can lead to abnormal growth patterns. For example, while auxin typically promotes growth in apical regions and suppresses lateral bud growth, its abnormal accumulation can inhibit proper shoot development and lead to problems with growth regulation.

This unique phenomenon, where the natural flow and regulation of auxin are disturbed, highlights the important role of auxin transport in maintaining healthy growth in meristematic tissues of shoots. In contrast, the other options do not align with the function of auxin transport inhibitors as they do not inherently lead to enhanced branching, complete elimination of growth, or influence on nutrient uptake directly.