Botn 201 :Plant Biochemistry And Physiology Question Paper
Botn 201 :Plant Biochemistry And Physiology
Course:Biochemistry
Institution: Kenya Methodist University question papers
Exam Year:2014
KENYA METHODIST UNIVERSITY
END OF 3''rd ''TRIMESTER 2014 (SB) EXAMINATION
FACULTY : SCIENCE & TECHNOLOGY
DEPARTMENT : PURE AND APPLIED SCIENCES
UNIT CODE : BOTN 201
UNIT TITLE : PLANT BIOCHEMISTRY AND PHYSIOLOGY
TIME : 2 HOUR
INSTRUCTIONS:
Answer all questions in section A and any two from section B.
SECTION A (30 Marks)
Question One
Using equations explain briefly what happens during the light independent stage of photosynthesis.
(3 marks)
Define photorespiration and explain why it is a wasteful process. (3 marks)
Discuss three ways plants use to avoid self pollination.
(3 marks)
Question Two
Explain briefly how apical dominance could be removed in plants. (3 marks)
In what ways has photoperiodism been exploited by Agriculturists.
(3 marks)
What is active transport and how does it benefit plants.
(3 marks)
Describe the activities that occur in a green leaf during C.A.M idling.
(3 marks)
Question Three
Discuss the structure and function of the Kranz anatomy in plants.
(3 marks)
What is C.A.M idling and of what significance is it to plants.
(3 marks)
In what three ways are hydrophytes adapted for survival in their habitat.
(3 marks)
SECTION B
Question Four
Summarize briefly the Krebs cycle.
(12 marks)
Discuss factors that control the rate of cell respiration.
(8 marks)
Question Five
Define transpiration.
(2 marks)
Differentiate between apoplastic and symplastic movement.
(4 marks)
Discuss various theories put forward to explain how water moves up the plants.
(14 marks)
Question Six
Discuss internal and external factors that influence opening and closing of the stomata.
(10 marks)
Discuss factors that affect the rate of photosynthesis.
(10 marks)
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