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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:2011

QUESTION ONE – (30 MARKS)
(a) State the differences of C3 and C4 plants giving two examples of each. (6 Marks) (b) State the functions of the following organs of plant cell. (i) Leucoplast (ii) Chromoplast (iii)Cell wall (4 Marks) (c) Distinguish between the following: (i) Light-dependent reactions and light-independent reactions (ii) Photolysis and photophosporylation. (6 Marks) (d) Explain two types of meristems stating their functions in growth of plants. (6 Marks) (e) Discuss the physiology of seed germination. (8 Marks)
QUESTION TWO – (15 MARKS)
(a) What is translocation? (2 Marks) (b) With the aid of diagram explain the mass flow hypothesis of phloem transport. (13 Marks)
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QUESTION THREE – (15 MARKS)
(a) Define the term photolysis (2 Marks) (b) Explain the concept of limiting factors in photosynthesis with reference to light intensity and the concentration of Carbon dioxide. (8 Marks) (c) State the structural features of xerophytes stating their effects on plants. (5 Marks)
QUESTION FOUR – (15 MARKS)
(a) State the chemical and physical properties of water. (4 Marks) (b) Explain why plants often fail in soils which is persistently waterlogged. (3 Marks) (c) Discuss how water and mineral salts are absorbed from the soil and transported to the plant leaves. (8 Marks)
QUESTION FIVE – (15 MARKS)
(a) Discuss the role of auxins in plants (10 Marks) (b) Explain one method of assessing plant nutrients. (5 Marks)

Bio0113:Plant Physiology Question Paper

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