The substance that is responsible for optical dominance in plants is known as

Assessment: JAMB UTME - Biology - 1997 Subject: Biology

Question 1 Report

The substance that is responsible for optical dominance in plants is known as
Answer Details
The substance responsible for optical dominance in plants is auxin. Auxin is a plant hormone that plays a crucial role in the growth and development of plants, including the regulation of plant cell elongation, apical dominance, and phototropism. Apical dominance refers to the phenomenon whereby the terminal bud of a plant inhibits the growth of lateral buds, resulting in the vertical growth of the plant. Auxin is produced in the apical meristem of the plant and is transported downward through the stem.
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