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(a) Intermittent growth curve
(b) Moulting
(c) Ecdysone
marto answered the question on October 7, 2019 at 08:57
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Date posted: October 7, 2019. Answers (1)
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The results are shown in the table below.(Solved)
An experiment was carried out to investigate the rate of growth of pollen tube against time.
The results are shown in the table below.
(b) (i) At what intervals was the growth of the pollen tube measured?
(ii) What was the length of pollen tube at; 130 minutes
(iii) At what time was the length of the pollen tube 18mm?
(iv) With reasons, describe the growth pattern of the pollen tube between:
- 0 to 120minutes
- Reason
- 120 to 180 minutes
- Reason
v) State the importance of the growth of pollen tube to the plant
(c) State the changes that take place in a flower after fertilization
Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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The diagram below represents some hormones, their sources and functions in mammals.
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c) Name the control labelled A & B
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Date posted: October 7, 2019. Answers (1)
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The diagrams below represent two gynoecia A and B obtained from two different plants.
(a) What name is given to;
Gynoecium A?
Gynoecium B?
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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b) Identify the process shown to be taking place.
Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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Date posted: October 7, 2019. Answers (1)
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The diagram below shows a phenomenon which occurs during cell division.
(a) Name the part labeled T.
(b) (i) State the biological importance of the part labelled T.
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Date posted: October 7, 2019. Answers (1)