Which of the following is not a plant growth regulator
Answers
Plant growth regulators function as chemical messengers for intercellular communication. There are currently five recognized groups of plant hormones: auxins, gibberellins, cytokinins, abscisic acid (ABA) and ethylene.
Indole-3-acetic acid (IAA, 3−IAA) is the most common, naturally occurring plant growth regulator of the auxin class.
2IP (Isopentenyl adenine) is a naturally occurring cytokinin that regulates cell division, development, and nutrient processing in plants.
Zinc (Zn) is not a plant growth regulator. It is one of the eight essential micronutrients. It is needed by plants in small amounts, but yet crucial to plant development.
So, the correct answer is 'IAA,2IP,Zn'.
Answer:
The correct answer is Option B - IAA, 2IP, Zn.
Explanation:
IAA and 2IP both are plant growth regulators but Zn is not a PGR.
Why Zinc (Zn) is not a PGR
- Zinc is an essential micronutrient for the production of IAA (indole acetic acid).
- An auxin found at the apex of plants and one of the growth regulators, IAA is found at the apex.
What are Plant Growth Regulators:
- A plant growth regulator (PGR) is a small chemical component that regulates plant growth.
- Plant growth hormones, or phytohormones, are other names for plant growth regulators.
- Phytohormones include indoles, terpenes, carotenoids, gases, and other chemical components.
- In addition to growth promoting properties, these phytohormones also inhibit growth