describe an experiment which
Demonstrates that growth stimulating hormone is produced at the tip of coleoptile.
Answers
ANSWER
ANSWERIn 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend towards the light when exposed to light from a unidirectional source. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.
ANSWERIn 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend towards the light when exposed to light from a unidirectional source. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.In 1913, Peter Boysen-Jensen concluded that the substance secreted at the tip is soluble in water (gelatin).
ANSWERIn 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend towards the light when exposed to light from a unidirectional source. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.In 1913, Peter Boysen-Jensen concluded that the substance secreted at the tip is soluble in water (gelatin).In 1926, F.W. Went published a report describing how he isolated a plant growth substance by placing agar blocks under coleoptile tips for a period of time then removing them and placing them on decapitated Avena stems. After placement of the agar, the stems resumed growth. In 1928, Went developed a method of quantifying this plant growth substance. His experiment showed that a chemical messenger diffuses from coleoptile tips and causes it to grow towards the light. He later proposed that the messenger substance is a growth-promoting hormone, which he named auxin. The Avena Coleoptile test is the most widely accepted bioassay for quantitative estimation of auxin concentration.
PLEASE MARK BRAINLIEST.
ANSWER
ANSWERIn 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend towards the light when exposed to light from a unidirectional source. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.
ANSWERIn 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend towards the light when exposed to light from a unidirectional source. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.In 1913, Peter Boysen-Jensen concluded that the substance secreted at the tip is soluble in water (gelatin).
ANSWERIn 1881, Charles Darwin and Francis Darwin performed experiments on coleoptiles of canary grass and observed that they bend towards the light when exposed to light from a unidirectional source. They concluded that the tip of the coleoptile was responsible for sensing light, and proposed that a messenger is transmitted in a downward direction from the tip of the coleoptile, causing it to bend.In 1913, Peter Boysen-Jensen concluded that the substance secreted at the tip is soluble in water (gelatin).In 1926, F.W. Went published a report describing how he isolated a plant growth substance by placing agar blocks under coleoptile tips for a period of time then removing them and placing them on decapitated Avena stems. After placement of the agar, the stems resumed growth. In 1928, Went developed a method of quantifying this plant growth substance. His experiment showed that a chemical messenger diffuses from coleoptile tips and causes it to grow towards the light. He later proposed that the messenger substance is a growth-promoting hormone, which he named auxin. The Avena Coleoptile test is the most widely accepted bioassay for quantitative estimation of auxin concentration.
PLEASE MARK BRAINLIEST.
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