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Home Q & A Board Biology-Related Homework Help General Biology
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jhpava jhpava
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9 years ago
Experimental technique: Manipulating movement of compounds from the coleoptile tip
The hypothesis that a mobile compound produced in the coleoptile tip controlled its bending toward directional light was tested by P. Boysen-Jensen in 1893. His experimental setup is represented below. Both dark and light treatment groups had intact coleoptiles as controls. The experimental groups included:
coleoptiles in which the tips were removed
coleoptiles that were cut with the tips separated by mica
coleoptiles that were cut with the tips separated by agar
Boysen-Jensen left one set of coleoptiles in darkness for 24 hours and one set in directional light for 24 hours and observed whether they elongated and/or bended toward the light.

Predict how the coleoptile will grow (or not grow) under each treatment by dragging the labels onto the table. Labels may be used once, more than once, or not at all.
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rsbrsb
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9 years ago
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#2
9 years ago
thank you!
kiero,  gountor,  devdev1515,  ravalibee,  hsthompson998,  opu77
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#3
9 years ago
Thank You
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#4
9 years ago
thank you!
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9 years ago
Just letting everyone know that the attachment does not contain the answer.

rsb's answer is best.
mbretz,  happycookie4lyf
Mastering in Nutritional Biology
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#6
9 years ago
thank you
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9 years ago
Thank you
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9 years ago
Thank you!
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4 years ago
thank you so much
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3 years ago
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2 years ago
Thank you!
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