Question

Plant growth regulators can be categorized under ______________.

• A. intercellular intrinsic factors
• B. intracellular intrinsic factors
• C. extrinsic factors
• D. none of these

Answer 1

The correct option is A intercellular intrinsic factors

Growth and differentiation are controlled by intrinsic factors and extrinsic factors.

The extrinsic factors are the external factors that influence growth and differentiation (a process in which cells mature to perform a specific function). Examples include light, temperature, water, oxygen, and nutrition.

Intrinsic factors are the internal factors of the plant that influence development in plants. Intrinsic factors may be intercellular or intracellular. Intracellular factors are the genetic factors that are inherited from the previous generation to the next generation. Intercellular factors include plant growth regulators or hormones that influence development in plants.