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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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