Auxins
Plant hormones are natural, created by the plants themselves. Plant growth regulators, on the other hand, are usually synthetic in nature. Both serve to help plants grow at low concentration, and both can damage plants at high concentrations.
Plant growth hormones e.g. IAA.
Plant hormones don't kill weeds. They are used for killing pests like aphids which absorb the hormone present in the phloem of the plant. These hormones are toxic for them and they die after consuming them.
It is either one of these four. -Hormones -Chloroplasts -Carbohydrates -The Nervous System. I believe it is Hormones or Chloroplasts. My guess would have to go with Hormones Though.
Hormones.
Hormones
The class of hormones called "Auxins" have this affect on plants.
Plant growth hormones e.g. IAA.
A gentle touch can stimulate plant growth by triggering a response in the plant called thigmomorphogenesis. This response can lead to changes in cell elongation, stem strength, and overall plant development. Additionally, gentle touching can encourage the plant to produce more essential hormones and proteins that aid in growth.
Plant hormones balances the hormones of humans. For example, soybean (Glycine max) affect the level of HDL, also affect the level of blood pressure and sex hormones estrogen due the phytoestrogen concentration of the plant.
It increase plant growth.
John W. Mitchell has written: 'Methods of studying plant hormones and growth-regulating substances' -- subject(s): Botanical Technique, Botany, Growth substances for plants, Plant hormones, Plant regulators, Technique, Technique, Botanical 'Test methods with plant-regulating chemicals' -- subject(s): Growth (Plants), Growth regulators, Plant hormones, Plant growth promoting substances, Plant growth inhibiting substances, Research 'Plant-growth regulators' -- subject(s): Growth regulators, Agricultural chemicals, Plant regulators
No there is no affect. Direct affect is not known
Auxin controls the growth of the plant. Auxin in the roots of the plant inhibits growth whereas in the stems in the stems it encourages growth.
Yes by using growth hormones
Hormones