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Bio0113:Plant Physiology Question Paper

Bio0113:Plant Physiology

Course:Diploma In Agriculture

Institution: Meru University Of Science And Technology question papers

Exam Year:2013

QUESTION ONE – (30 MARKS)
a. Describe the importance of plant physiology to an agricultural student. (4 Marks) b. Give the functions of the following plant cell organelles: (4 Marks) i. Cell wall ii. Vacoule c. Describe two components of water potential. (6 Marks) d. State the importance of osmosis in plants. (2 Marks) e. Explain hydrophonic method of mineral elements determination. (4 Marks) f. Differentiate between C3 and C4 plants. (4 Marks) g. Discuss the importance of Gebberrelic acid in plants. (4 Marks) h. Plants produce sugars by photosynthesis. What do plants do with the sugars after that? (2 Marks)
QUESTION TWO – 15 MARKS
Explain the effect of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis. Illustrate. (15 Marks)
QUESTION THREE – 15 MARKS
a. Describe the significance of water to living organisms. (6 Marks) b. Explain the factors that affect chemical potential of water. (9 Marks)
QUESTION FOUR – 15 MARKS
a. Discuss the factors that affect the translocation of organic compounds. (6 Marks) b. Plant growth and development is affected by many factors. Discuss. (9 Marks)
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QUESTION FIVE – 15 MARKS
a. State the effect of abscisic acid (ABA) on plant during water stress. (3 Marks) b. Outline the symptoms of excess nitrogen in plants. (4 Marks) c. Discuss the factors that affect water and mineral element absorption by plants. (8 Marks)

Bio0113:Plant Physiology Question Paper

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