Master of Science II (Botany) Examination: Oct Nov 2016
Semester III (New CGPA)
SLR No. Day
Date Time Subject Name Paper
No. Seat No.
SLR SM
148
Wednesday
23/11/2016
02.30 PM
to
05.00 PM
Physiology of Plant
Growth and
Development
C
XII
Instructions: Answer any five questions.
Q.1 is compulsory.
Attempt any two from Q.2, 3 4
Attempt any two from Q.5, 6 7
Figures to the right indicate full marks
Total Marks:70
Q.1 Write the correct alternatives from given alternatives 14
Jasmonate is synthesized from
Linolenic acid Palmtic acid
Aspartic acid Ascorbic acid
TIBA acts as an transport inhibitor.
Gibberellins Auxin
Kinetin
Senescence of entire plant after a single reproductive cycle is called
Sequential Overall
Monocarpic Deciduous
is a non-climacteric fruit
Banana Lemon
Apple Mango
Aradidopsis thaliana is used as a research tool by plant
Physiologist Geneticists
Molecular biologists Cytologists
Ca independent signal transduction pathway involves as signaling
intermediate.
Calmodulin Cyclic GMP
Cyclic AMP Protein kinase
Polymines contain two or more amino acids and are
Polyvalent cations Polyvalent anions
Zwitter ions Both a c
Ex-situ conservation of orthodox seeds is not problematic due to
Tolerance to desiccation Long life span
Freeze tolerance All of these
Conversation of Pr to Pfr occurs in presence of light.
Red Far red
Infra red All of these
Page 1 of 2
10) During seed development phosphorus is deposited in the form of
Sugar phosphates Phospholipids
Phytin Lecithin
11) controls spouting of potato tubers which increases the food value
and quality of tubers.
CCC Maleic hydrazide
Salicylic acid TIBA
12) Recalcitrant seeds are known as seeds
Desiccation sensitive Desiccation tolerant
Freeze sensitive Freeze tolerant
13) Aqueous solution of ethephon is often sprayed on plants in field conditions to
exert hormonal effects of
ABA Ethylene
Brassisin TRIA
14) a natural plant growth regulator, is a component of epicuticular
wax.
Triacontanol Paclobutrazol
Ethephon Brassinosteroids
Q.2 Describe the second messengers and their role in signal transduction in plants with
suitable examples.
14
Q.3 Define growth retardants. Give an account of growth retardants and their role in
crops.
14
Q.4 Define senescence. Explain the mechanism of leaf and petal senescence. 14
Q.5 Write in brief about
Physiology of seed germination 07
Physiology of seed development 07
Q.6 Describe the structure and function of phytochrome. 07
Explain about "Drosophila of plant Biology". 07
Q.7 Write short notes on any three 14
Salicylic and jasmonic acid
Brassinosteroids
PCD
Biochemical changes during fruit ripening