Bio0113:Plant Physiology Question Paper

Bio0113:Plant Physiology 

Course:Diploma In Agriculture

Institution: Meru University Of Science And Technology question papers

Exam Year:2011



QUESTION ONE – (30 MARKS)
(a) State the functions of the following plant cell organelles: (i) Vacuole (ii) Chloroplast (iii)Nucleus (6 Marks) (b) Explain the factors that influence growth and development of plants. (6 Marks) (c) Discuss the effect of water stress on plant growth. (10 Marks) (d) Highlight five ways plant growth regulator are used on agronomic plants. (5 Marks) (e) State the importance of photosynthesis. (3 Marks)
QUESTION TWO – (15 MARKS)
(a) With the aid of diagram discuss the concept of diffusion (9 Marks) (b) Explain factors that affect diffusion. (6 Marks)
QUESTION THREE – (15 MARKS)
(a) Define cellular respiration (2 Marks) (b) Discuss the factors that affect respiration of plant cells. (8 Marks) (c) Explain how plant respiration affects Agriculture. (5 Marks)
QUESTION FOUR – (15 MARKS)
(a) Define carbon fixation (2 Marks)
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(b) State three requirement of photosynthesis. (8 Marks) (c) Discuss the factors influence photosynthesis rate in crop productivity. (10 Marks)
QUESTION FIVE – (15 MARKS)
(a) State two functions of calcium and nitrogen in plants. (4 Marks) (b) Outline five roles of water in plants (5 Marks) (c) Discuss the practical uses of gibberellins in agriculture. (6 Marks)






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