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(a)
Set 1 – normal conditions
Set E1 – in the dark
Set B – unidirectional light
(b) (i) Etiolation;
(ii) To reach light for photosynthesis;
(c) (i) Positive phototropism;
(ii) Auxins migrate to the darker side causing faster growth/elongation on this side; resulting in curvature of the shoot towards the source of light;
(d) (i) Set A1 – Epigeal;
Set M1 – hypogeal;
(ii) Set A1 – cotyledons brought above the ground;
Set M1 – cotyledons remain below the earth?s surface/
underground;
sharon kalunda answered the question on September 16, 2019 at 13:20
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