no it is not a chemical change
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A growth hormone is a chemical that has effects on plant growth
Yes, chemical fertilizers stimulate plant growth. Nitrogen, phosphorus and potassium are the main components of artificial, chemical, inorganic, synthetic fertilizers. They're the nutrients that encourage both proper growth of plant body parts and overall growth of the plant in question.
The plant growth hormone Auxin is controlled by circadian rhythms within the plant. The discovery explains how plants can time their growth to take advantage of resources such as light and water, and suggests that many other processes may be influenced by circadian rhythms.
Ofcourse it does. All plants, algae and cyanobacteria perform photosynthesis, which is a chemical reaction. So answering your question, tree growth and for that matter all plant growth involves chemical changes.
A chemical substance in plants that inhibits the growth by inactivating the chemicals and factors essential for growth of that particular plant....
Rice is not a chemical change it is a food plant
Plant growing involve physical and chemical changes.
A growing plant involves both chemical and physical changes.
Growth hormones
A chemical sprayed on plants to reduce their size.