Which of the following effects of auxins is of wide application?
Which of the following effects of auxins is of wide application?
The correct option is D All of the above
Auxin promotes cell growth and elongation of the plant. In the elongation process, auxin alters the plant wall plasticity, making it easier for the plant to grow upwards. Auxin also influences rooting formations. By applying NAA or IBA to a plant cutting from a parental plant, rooting takes less time for the new plant greatly increasing its chance of survival. Auxin is responsible for apical dominance and phototropism. Apical dominance means that a plant has the tendency to grow quickly up the central shaft without properly filling in the plant with smaller limbs and leaves. Phototropism is a process by which auxin on the exterior of a plant is degraded to cause a slope of the plant towards the light.
Therefore, the correct answer is option D.
Auxin promotes cell growth and elongation of the plant. In the elongation process, auxin alters the plant wall plasticity, making it easier for the plant to grow upwards. Auxin also influences rooting formations. By applying NAA or IBA to a plant cutting from a parental plant, rooting takes less time for the new plant greatly increasing its chance of survival. Auxin is responsible for apical dominance and phototropism. Apical dominance means that a plant has the tendency to grow quickly up the central shaft without properly filling in the plant with smaller limbs and leaves. Phototropism is a process by which auxin on the exterior of a plant is degraded to cause a slope of the plant towards the light.
Therefore, the correct answer is option D.
