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Summary A Level Biology notes - Unit 14 Control and co-ordination $7.99   Add to cart
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Summary A Level Biology notes - Unit 14 Control and co-ordination
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Level Biology Notes: Unit 14 - Control and Coordination Dive into the fascinating world of control and coordination with these detailed Level Biology notes! Ideal for students looking to master Unit 14 concepts, these notes simplify complex topics through clear explanations and helpful analogies...

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  • October 31, 2024
  • 3
  • 2024/2025
  • Summary

Subjects

  • a level biology
  • aqa
  • cie
  • ocr
  • o level
  • a level
  • biology
  • as level
  • chemistry
  • physics
  • science
  • human biology
  • oxford
  • cambridge
  • edexcel
  • control and coordination
  • unit 14
  • notes
  • summary
  • exam

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  • A/AS Level
  • CIE
  • Biology
  • Unit 14 - Control and co-ordination
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15.2 Control and Coordination in plants


Electrical communication in the Venus Flytrap
inside of lobes has 3 stiff sensory hair
when insect touches these hairs
stimulates an action potential
causes lobes to fold together along midrib

How closure achieved
of the trap is

1 simony hair touched with force
enough
2 Cast channels at base of hair is activated

when channels are open Cast flow in and
generate a receptor potential

3 it 2 sensory hairs are stimulated within a
period of
35 secs or a short period of time
or I hair is stimulated twice in 35 secs

action potentials will travel across the trap and cause it to clos

when trap is open lobes of leaf are convex
U
open
when trap closes lobes become
f
triggered concave
blend downwards closed
occurs as a result of
a release of elastic tension
in cell walls

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