Question

Plant hormone is called

• A. Pheromone
• B. Phytohormone
• C. Enzyme
• D. None of these

Hint:

Remember prefixes from Greek or Latin. "Phyto-" means plant, so "phytohormone" literally means "plant hormone". This can help you decipher many scientific terms.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The question asks for the specific term used for hormones found in plants. Hormones are signaling molecules that regulate physiology and behavior.

Step 2: Detailed Explanation:
\[\begin{array}{rl} \bullet & \text{Phytohormone: This is the correct scientific term for plant hormones. The prefix "phyto-" comes from the Greek word for plant. Phytohormones are signal molecules produced within plants that occur in extremely low concentrations. They regulate all aspects of plant growth and development, including germination, root growth, flowering, and fruit ripening. Examples include auxins, gibberellins, and cytokinins. } \\ \bullet & \text{Pheromone: A chemical substance produced and released into the environment by an animal, affecting the behavior or physiology of others of its species. } \\ \bullet & \text{Enzyme: A biological catalyst, usually a protein, that speeds up biochemical reactions. It is not a signaling molecule in the same way a hormone is. } \\ \end{array}\]

Step 3: Final Answer:
A plant hormone is called a phytohormone.