Download SGBAU BSc 2019 Summer 5th Sem Botany Plant Physiology n Ecology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 5th Sem Botany Plant Physiology n Ecology Previous Question Paper

AW?l 743
B.Sc. (l?art?III) Semester?V Examination
BOTANY
(Plant Physiology and Ecology)
Time : Three Hours] [Maximum Marks : 80
Note :?( 1) There are SEVEN questions in all.
(2) Question No. 1 is compulsory and carries 8 marks.
(3) Question Nos. 2 to 7 carry equal marks.
(4) Draw well labelled diagrams wherever necessary.
I. (a) Fillintheblanks:
(i) The ?rst stable product in C? cycle is _. '/2
(ii) The phenomenon of inducing ?owering using chilling treatment is known as __7.
'/2
(iii) __ is edaphic factor in ecology. '/:
(iv) The movement that takes place in response to gravity is called as ___. ?/2
(b) Choose correct alternatives (MCQ) :
(v) C AM pathway was ?rst time reported in :
(a) Cactaccac (b) Fabaccac
(c) Araccac (d) C rassulaccac '/2
(vi) Prcscncc ot?air chambers in internal structure of leaf and stem is character of :
(a) Hydrophytcs (b) Xcrophytes
(c) Mcsophytcs (d) Halophyies '/2
(Vii) The end product of glycolysis is 2
(a) Oxalic acid (b) PyTuvic acid
(c) Citric acid (d) Fumaric acid 1/2
(viii) ___ is responsible for ripening of fruit.
(:1) Auxin (b) GA?
((2) Cylokinins (d) Ethylene '/z
(c) Answer in one sentence each :
(ix) Dc?nc respiratory quotient. 1
(x) Dclinc photolropism. ? 1
(xi) De?ne ecology. l
(xii) What is guttation '? l
YBC?153ll I (Contd.)

F)
OR
(d) PlasmolygiS
(e) Starch sugar hypothesis
(1) Carrier concept.
3. Give detail account of Calvin ( yclc,
0R
Describe the eccount 0n GI) col} sis,
4. Comment on :
(g) Sources of N:
(h) Gromh phases
(i) Applications of Auxins.
OR
0) Nitrate rcductase
(k) Ethylene
(l) Symbiotic 1V2 ?xation.
5. Comment on
(m) Concept of ?origen
(n) Tropic movements
(0) Response of plants 10 walcr mess.
OR
(p) chaliza?jon
((1) Long day plants
(r) Response ofplrmts t0 :zalinm stress
6. Comment on .
(3) Water as ecological fucw?
(1) Structure ofatmospherc
(u) Anatomical adaptatmn of hydn rphycs.
OR
(v) Light as ecological factor
(w) Process of soil formation
(x) Morphological adaptation of xvrophytcs.
7. De?ne ecosystem. Discuss 5er cturnl components and functions in pom. ecosystem.
OR
(i) Hydroscre
(ii) Namlity and Mortal 'ty
YBC~I53H 2
Comment on :
(a?) Osmosis
(b) Passive water absorption
(c) Types of Transpiralion.
(JAAJ?I-
O?
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