How many types of plant hormones are primarily involved in growth regulation?

How many types of plant hormones are primarily involved in growth regulation?

Correct Answer: 4

Step 1: Understand that plant hormones are chemicals that help regulate growth in plants.
Step 2: Identify the four main types of plant hormones involved in growth regulation.
Step 3: The first type is auxins, which help with cell elongation and growth.
Step 4: The second type is gibberellins, which promote stem elongation and seed germination.
Step 5: The third type is cytokinins, which encourage cell division and growth of shoots.
Step 6: The fourth type is abscisic acid, which helps plants respond to stress and regulates growth.

Plant Hormones – Plant hormones, or phytohormones, are chemical substances that regulate various aspects of plant growth and development.
Types of Plant Hormones – The four primary types of plant hormones involved in growth regulation are auxins, gibberellins, cytokinins, and abscisic acid.