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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:2012

QUESTION ONE (30 MARKS)
a. Differentiate between apoplast and symplast (2 Marks) b. Discuss the importance of ethylene in agriculture (8 Marks) c. With the aid of diagram explain the phases of plant growth and development (10 Marks) d. Explain how the following factors affect photosynthesis. i. Age of leaf ii. Nutrition iii. Pollution (6 Marks) e. Explain how plant respiration affects agriculture (4 Marks)
QUESTION TWO (15 MARKS)
a. State three functions of water in plants (3 Marks) b. Explain the following terms: i. Capillary water ii. Gravitational water (4 Marks) c. Discuss how water moves from the soil to the plant leaves ( 8 Marks)
QUESTION THREE (15 MARKS)
a. State the functions of nitrogen in plants (3 Marks) b. Explain the ash method of nutrients determination in plants ( 6 Marks) c. What are the criteria of nutrient essentiality? ( 3 Marks) d. State the role of calcium nutrients in plants (3 Marks)
2
QUESTION FOUR (15 MARKS)
a. Discuss the factors that affect respiration in plants (9 Marks) b. Explain two types of respiration stating their application in agriculture (6 Marks)
QUESTION FIVE (15 MARKS)
a. Discuss the effect of cytokinins in plants (5 Marks) b. Illustrate the effect of phototropism (6 Marks) c. Explain the effect of abscisic acid (ABA) on water stress in plant (4 Marks)

Bio0113:Plant Physiology Question Paper

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