Download PTU B.Sc Agriculture 2019 May 3rd Semester 72552 PLANT PHYSIOLOGY Question Paper

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Roll No.

Total No. of Pages : 02

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Total No. of Questions : 09

B.Sc.(Agriculture) (2014 & Onwards) (Sem.-3)

PLANT PHYSIOLOGY

Subject Code : BSAG-302

M.Code: 72552

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Time: 3 Hrs.

Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt ANY FOUR questions.

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3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt ANY TWO questions.

Q1. Write short notes on :

1. a) Hydroponics
2. b) Symplast
3. c) Scarification

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4. d) Plant physiology
5. e) Endospermic seeds
6. f) Coleoptile
7. g) Day neutral plants
8. h) Vernalization

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9. i) Non-climacteric fruits
10. j) Harvest maturity

SECTION-A

SECTION-B

Q2. Discuss the structure of gram seed with the help of well labeled diagrams.

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Q3. Differentiate between epigeal and hypogeal germination. Give two examples of each.

Q4. Differentiate between C3, C4 and CAM plants.

Q5. Discuss the importance of plant physiology in agriculture.

Q6. Discuss various causes of seed dormancy.

SECTION-C

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Q7. a) Describe the mechanism of photorespiration in plants.

b) Discuss the apoplastic and symplastic pathway for translocation of assimilates in plants.

Q8. Discuss occurrence, biosynthesis, mode of action and commercial applications of gibberellins in plants.

Q9. Discuss physiological roles and deficiency symptoms of phosphorus and magnesium in plants.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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