investigations for photo and geotropism
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Last updated 5:20 PM on 1/25/26
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4 Terms
1
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Phototropism investigation
used coleoptiles: wheat.
control
no tip
covered w opaque cap
covered w transparent cap
opaque shield
2
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phototropism findings
no tip: no growth
opaque tip: no growth
transparent, shield: tropism.
shows tip is responsible for growth
gelatin: permeable so signal is a mobile chemical
3
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geotropism investigation
clinostat.
spins plant to ensure gravity equal on all sides.
4
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geotropism findings
growth is even throughout the plant
