Bio 0113: Plant Physiology Question Paper
Bio 0113: Plant Physiology
Course:Diploma In Agricultural Education And Extension
Institution: Meru University Of Science And Technology question papers
Exam Year:2010
QUESTION ONE – (30 MARKS)
(a) Differentiate between apoplast and symplast. (2 Marks) (b) List three basic activities that are involved in growth of plants. (3 Marks) (c) Explain the effect of excess water in plants. (4 Marks) (d) Discuss the role of gibberellins in plants. (8 Marks) (e) Describe the environmental factors that play a role in opening and closing of stomata. (10 Marks) (f) State the importance of respiration process in plants stating where it takes place. (3 Marks)
QUESTION TWO – (15 MARKS)
(a) Describe two methods of mineral determination in plants. (6 Marks) (b) State the physiological plant disorder due to nitrogen toxicity. (3 Marks) (c) With the aid of diagram describe three developmental stages of growth in plants. (6 Marks)
QUESTON THREE – (15 MARKS)
(a) Define the term physiological maturity. (2 Marks) (b) With the aid of diagram describe the process of translocation. (10 Marks) (c) Explain the reason why to harvest the crops when they have reached the physiological maturity. (3 Marks)
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QUESTION FOUR – (15 MARKS)
Study the diagram below and answer the following questions; a, b and c
(a) State the process of investigation. (2 Marks (b) Explain what took place in the experiment. (3 Marks) (c) State the importance of the process above. (2 Marks) (d) Explain the following factors how they affect photosynthesis. (i) Photoperiod (ii) Water availability (iii) Age of leaf (8 Marks)
QUESTION FIVE – (15 MARKS)
(a) Describe the liquid immersion methods of water potential measurement. (5 Marks) (b) State two component of water potential. (2 Marks) (c) Describe the factors that affect chemical potential of water. (8 Marks)
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