Saturday, January 21, 2023

Dr. A.P.J. Abdul Kalam University MSC III SEM (Botany) Plant Physiology [MSB301T] Dec 2020 Question Paper

Dr. A.P.J. Abdul Kalam University

Master of Science (Botany)

Third Semester Main Examination, Dec-2020

Plant Physiology [MSB301T]

Time: 3:00 Hrs Max Marks 85

Note: Attempt all questions.

All questions carry equal marks.

Q.1 What do you mean by thermodynamics?

Describe the plant water relations.

Q.2 Explain sucrose sensing mechanism.

Write short notes on:-

(h) Cyclic nucleotides

(i) Calcium- Calmodulin Cascade

Q.3 Explain the physiological effects of auxins and gibberlins.

Describe Hormone receptors? Explain how it works.

Q.4 What is phytochromes and cryptochromes? Write its biological properties.

Explain the role of vernalization.

Q.5 What is water deficit and drought resistance? Explain it.

Explain salinity stress? Describe it.

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