Essay on Phytoplankton - Aquatic Plant Science - Exams
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Essay on Phytoplankton - Aquatic Plant Science - Exams

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Essay on Phytoplankton, Species Composition, Ecological Importance, Growth Pattern, Brown Algae, Distribution and Ecology, Mechanisms Controlling, Carbon Dioxide, Kranz Anatomy, Biochemical Pathway are some points from t...
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Microsoft Word - 2Y Semester 1 Exams.doc

Semester II Examinations 2007 / 2008

Exam Code(s) 2BS1, 2EH1, 2EV1, 2MR1, 1OA1, 1EM1 Exam(s) Second Science (Undenominated)

Second Science (Earth and Ocean Science) Second Science (Environmental Science) Second Science (Marine Science) Visiting, Erasmus Students

Module Code(s) 2BS1–BT216, 2EH1–BT216, 2EV1–BT216, 2MR1–BT216,

1OA1–BT216, 1EM1–BT216 Module(s) BT216: Aquatic Plant Science I: Introduction to the

biology, ecology and physiology of aquatic plants Paper No. External Examiner(s) Professor M. Jones Internal Examiner(s) * Dr D.B. Stengel

Dr Z. Popper

Instructions:

Answer four questions, at least one from each section Use a separate answer book for each section

Duration 3hrs

No. of Pages 2 Department(s) Botany Requirements None

SECTION A

1.Write an essay on either ‘Dinoflagellates’ or ‘Diatoms’. 2. Write an essay on phytoplankton. Include a description of its communities,

species composition and its ecological importance, and describe its seasonal growth pattern using diagrams.

3. Describe and explain the different life history patterns that occur in the algae.

Give a specific example for each type, and illustrate your answer with diagrams.

4. Give a brief account of the brown algae (Phaeophyceae, Heterokontophyta).

Include a description of their distinguishing characteristics, morphological types, reproduction, distribution and ecology, using some examples.

SECTION B 5. Discuss the mechanisms controlling stomatal opening and closing. 6. Describe experiments that show oxygen is generated during photosynthesis

and that it is derived from water and not carbon dioxide. 7. Discuss the role of phytochrome in photoperiodism.

8. Give an illustrated description of Kranz anatomy and the biochemical pathway

associated with it.

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