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The diagram below represents growing seedling which were subjected to unilateral light at the beginning of an experiment. a) i) State the result of P and...

      

The diagram below represents growing seedling which were subjected to unilateral light at the beginning of an experiment.
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a) i) State the result of P and R.
ii) Account for your answer in (a) (i) above.
b) (i) If the apical bud of seedling P was removed, what results would be expected after 5 days.
ii) Explain your observation in (b) (i) above.
c) What is the significance of the practice in b (i) above in agriculture?

  

Answers


sharon
a) i) P - Will bend towards light;
R Continue growing upright;
ii) P- Light causes lateral migration of auxins to dark side of the seedling causing faster growth on dark side than
lightside hence curvature;
R - Mica sheet reflect light hence uniform distribution of Indole-3-acetic acid in the seedling;
b) i) Sprouting of lateral buds into branches;
ii) Apical shoot is source of Indole-3-acetic acid; Low Indole-3-acetic acid concentration stimulate lateral bud to sprout out;
c) Increased yields;
sharon kalunda answered the question on May 24, 2019 at 12:39


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