(a) It's growth movement in plants or part of a plant in response to a unidirectional stimulus
(b) - Accelerates growth in shoots, can inhibit growth in roots in high concentration.
- Promotes growth in roots, can inhibit growth in shoots in low concentration.
johnmulu answered the question on May 19, 2017 at 06:27
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(a) Thigmotropism in stems;
(b) Geotropism in roots(Solved)
State one survival value for each of the following plants:
(a) Thigmotropism in stems;
(b) Geotropism in roots
Date posted: May 19, 2017. Answers (1)
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(b) What is thigmotropism? (Solved)
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(b) What is thigmotropism?
Date posted: May 19, 2017. Answers (1)
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Date posted: May 19, 2017. Answers (1)
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Date posted: May 19, 2017. Answers (1)
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(b) Explain how the bending towards the source of light occurs (Solved)
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Date posted: May 19, 2017. Answers (1)
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(b) Name the type of evolution illustrated by the structure of the limbs observed.
(c) What evidence of evolution is illustrated by the limbs?
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Date posted: May 19, 2017. Answers (1)
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Date posted: May 19, 2017. Answers (1)
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Date posted: May 19, 2017. Answers (1)
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Date posted: May 19, 2017. Answers (1)
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Date posted: May 19, 2017. Answers (1)
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(b) State two limitations of fossils as an evidence of evolution. (Solved)
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Date posted: May 19, 2017. Answers (1)
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(b) Why is Lamarck's theory not acceptable? (Solved)
(a) State two ideas proposed by Lamarck in his theory of evolution.
(b) Why is Lamarck's theory not acceptable?
Date posted: May 15, 2017. Answers (1)
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(ii) Give an example of a vestigial structure in human.(Solved)
(a) (i) What is meant by vestigial structures?
(ii) Give an example of a vestigial structure in human.
Date posted: May 15, 2017. Answers (1)
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(b) How does convergent evolution occur?
(Solved)
(a) What is fossil?
(b) How does convergent evolution occur?
Date posted: May 15, 2017. Answers (1)
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(b) Give a reason why organisms become resistant to drugs. (Solved)
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Date posted: May 15, 2017. Answers (1)
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Date posted: May 13, 2017. Answers (1)
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(a) Organic evolution?
(b) Continental drift? (Solved)
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(a) Organic evolution?
(b) Continental drift?
Date posted: May 13, 2017. Answers (1)
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(a) Fossils records.
(b) Comparative anatomy. (Solved)
Give reason why each of the following is important in the study of evolution:
(a) Fossils records.
(b) Comparative anatomy.
Date posted: May 13, 2017. Answers (1)
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State two advantages of natural selection to organisms.
Date posted: May 13, 2017. Answers (1)
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Date posted: May 13, 2017. Answers (1)