The first scientist associated with the discovery of auxins in plants is:

• A. Haagen smit
• B. Boysen-Jensen
• C. Darwin
• D. Yabuta

The first scientist linked to the discovery of auxins in plants is C. Darwin. Charles Darwin and his son Francis conducted experiments in the late 19th century that laid the groundwork for understanding how plants respond to light, leading to the identification of auxins as growth hormones.

Key Contributions

• Darwin's Experiments: Focused on phototropism, the growth of plants towards light.
• Auxins: Hormones that regulate plant growth and development.

Further Developments

Later researchers, including Peter Boysen-Jensen and others, expanded on Darwin's findings, but Darwin's work was foundational in the study of plant hormones.