CPH 201 Plant Physiology Question Paper for Agriculture

UNIVERSITY OF AGRICULTURAL SCIENCES, DHARWAD

College of Agriculture, Raichur

Final Examination Question Paper

Course Code: CPH–201
Course Title: Plant Physiology

Max. Marks: 50
Time: 2:30 hrs

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Q.I Objective type of questions

A) Underline the correct answer

(10 × 0.5 = 5.0)

1. Water potential of distilled water is
   a) Zero
   b) –ve
   c) +ve
   d) None of these

2. Vitae is present in
   a) Chloroplast
   b) Mitochondria
   c) Cell wall
   d) Cell membrane

3. When group of cells put in a hypertonic solution
   a) Only solutes move out of cell
   b) Both solutes & solvents move out of cell
   c) Only solutes move out of cell
   d) Solvents enter into cell

4. Leaf water potential during guttation is
   a) –ve
   b) Zero
   c) +ve
   d) –6 bars

5. Absorption of water by plants from soil mainly by
   a) Hydration
   b) Ex-osmosis
   c) End-osmosis
   d) Plasmolysis

6. The first carbon compound synthesized by C₂ plant is
   a) IBA
   b) Malic acid
   c) PGA
   d) Carbonic acid

7. Photorespiration in plants occurs in
   a) Sun light
   b) Night
   c) CO₂ enrichment
   d) All the three

8. α Amylases involved in
   a) Hydrolysis
   b) Peroxidation
   c) Transamination
   d) Photolysis

9. Naturally synthesized Auxin is
   a) NAA
   b) IBA
   c) TIBA
   d) IAA

10. Different types of abiotic stress
    a) Moisture
    b) Salinity
    c) Radiation load
    d) All the three

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B) Fill in the blanks (one word)

(5 × 0.5 = 2.5)

1. ______ hormones induces stomatal opening

2. ______ is the first stable carbon compound in C₄ plants

3. ______ maintains apical dominance in plants

4. ______ is an example for long day plant

5. ______ is an example for herbicide

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C) Match the following

(5 × 0.5 = 2.5)

A	B
1. 2,4-D	Synthetic Auxin
2. Sigmoid	Growth curve
3. Ribosomes	Proteins
4. Salinity	Stress
5. Malic acid	C₄ pathway

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Q.II

a) Expand the following (Any five)

(5 × 1 = 5.0)

1. CGR

2. PAR

3. IAA

4. ATP

5. WUE

6. SDP

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b) Correct the statements (Any five)

(5 × 1 = 5.0)

1. In CAM plants stomata open during day time.

2. Gibberellins are naturally occurring growth inhibitors in plants.

3. Calcium is readily mobile element in plants.

4. The shape of guard cells in dicot plants is dumbbell.

5. The number of ATP molecules produced in Krebs cycle is 20.

6. Rice is a long day plant.

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c) Differentiate between the following (Any five)

(5 × 1 = 5.0)

1. Determinate and indeterminate growth

2. Apoplastic transport and symplastic transport

3. Physiological maturity and harvestable maturity

4. Climacteric and non-climacteric fruits

5. Phytochrome and cryptochrome

6. Growth respiration and maintenance respiration

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Q.III Answer the following questions in brief (Any five)

(5 × 2 = 10.0)

1. Define water potential and explain the components of water potential

2. Explain the vernalization

3. Write Mengel’s classification of nutrients

4. Define dormancy? Explain the types of dormancy with examples

5. Explain leaf reddening in cotton

6. Draw neat diagram of Krebs cycle indicating enzymes

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Q.IV Answer the following questions (Any five)

(5 × 3 = 15.0)

1. Write the differences between C₃ and C₄ plants

2. Define senescence? Explain the various types of senescence in plants with examples

3. Define photoperiodism and write classification of plants based on photoperiodic response with examples

4. Explain role and deficiency symptoms of potassium and zinc

5. Define growth and describe with formula and units of any five growth parameters

6. Explain glycolysis of respiration

7. Explain occurrence, bioassay and mode of action of auxins in plants

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