What is the role of auxin in plant development?
What is the role of auxin in plant development?
Auxins are a powerful growth hormone produced naturally by plants. They are found in shoot and root tips and promote cell division, stem and root growth. They can also drastically affect plant orientation by promoting cell division to one side of the plant in response to sunlight and gravity.
Which one is main role of auxin is plant?
Auxin has various physiological effects in plants such as : Cell elongation: Auxin stimulates elongation of cells in the shoot. Auxin is produced by the shoot tip and thus, its concentration is highest there. It acts as a growth promoter for the apical bud and inhibits the growth of lateral buds.
What is the role of auxin in plants Class 10?
Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance). They are produced in the stem, buds, and root tips. Example: Indole Acetic Acid (IA). Auxin is a plant hormone produced in the stem tip that promotes cell elongation.
Which one is main role of auxin in plants Mcq?
Auxin involves in cell elongation, rooting, and cell differentiation.
What is the role of auxin in regards to plant growth quizlet?
How dose auxin function? production of auxin in the apical meristem promotes growth of shoot and roots and prevents growth in lateral (axillary) buds. ensures a plant utilizes its energy to grow upwards towards light to try and outcompete other plants.
How auxin concentrations regulate plant growth in the root and stem?
In the shoots, auxin stimulates cell elongation and thus high concentrations of auxin promote growth (cells become larger) In the roots, auxin inhibits cell elongation and thus high concentrations of auxin limit growth (cells become relatively smaller)
What is auxin hormone and its function?
auxin, any of a group of plant hormones that regulate growth, particularly by stimulating cell elongation in stems.
What are the various functions of auxins and gibberellins in plant growth?
The most important differences between auxin and gibberellin are that auxin promotes the growth of shoot whereas gibberellin is involved in the elongation of the stem, flowering and seed germination. Auxin plays a major role in apical dominance whereas gibberellin has no role in apical dominance.
Why is auxin called a growth regulator?
Auxins: These are growth promoting substances that contribute to the elongation of shoots, but at high concentrations they can inhibit growth of lateral buds. In addition to being used as plant growth regulators, auxins can also be herbicides (2, 4-D etc.).
Which one is not a function of auxin?
Photoperiodism is the physiological reaction like flowering in plants that depends on the length of day and night. Thus, the correct answer is option C.
