Download SGBAU BSc 2019 Summer 4th Sem Botany Cell Biology Genetics n Biochemistry Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 4th Sem Botany Cell Biology Genetics n Biochemistry Previous Question Paper

AW?l717
B.Sc. (Part?ll) Semester?IV Examination
BOTANY
(Cell Biology, Genetics and Biochemistry)
'l?ime : Three Hours] [Maximum Marks : 80
Note :? (1) There are Seven questions in all.
(2) Q. No. l is compulsory and carries 8 marks.
(3) Q. No. 2 t0 7 cdrry equal marks.
(4) Draw wcll labelled diagrams wherever necessary.
1. (A) Fill in the blanks :
(i) Mendel performed Hybridization experiments in plants. V:
(ii) is called as power house of a cell. '/2
(iii) Vacuole in the plant cell is bowld by a membrane called as _?_. V2
(iv) Phenotypic ratio of monohybrid cross is ,,- . ?/2
(B) Choose the correct altemative (MCQs) :
(v) Chromosome ends are called as . V2
(a) Satellite (b) Telomerc
(c) Centromcre (d) Kinelochore
(vi) The protein part of enzyme is . '/2
(a) Vitamins (13) lloloenzymc
(b) Apocnzyme (d) Prosthetic group
(vii) The loss of chromosome segment is knovm 1m : V:
(a) Duplication (b) Deletion
(c) Inversion (d) 'l'ranslocation
(viii)The site of photosynthesis in plant cell is : ?/2
(a) Mitochondria (b) Golgi Complex
(c) Chloroplast (d) Nucleus
(C ) Answer in one scntencc :
(ix) De?ne 'l?cst Cross
1
(x) De?ne Polyploidy 1
(xi) Give one example of Disaccharides l
1
(xii) De?ne linkage.
{Q
Explain :
(3) Functions of cell wall.
(b) Ultrastructure of Nuclear membrane. 4
(c) Fluid mosaic model of plasma membrane.
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YBC?l 5288 l (Contd.)

(d) Functions ot?l?lasma membrane. 4
(e) Structure of Chloroplast. 4
(0 Difference between Prokdryotic and Eukaryotic cells. 4
3. Describe :
(g) Prophase and Melaphasc in Mitosis. 6
(h) Structure and functions of Endoplasmic reticulum. 6
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(i) Zygolene and Pachylcne m Meiosis. 6
(j) Structure and functiorws 01' Mitochondria. 6
4. Explain :
(k) Tclorners 4
(1) Dupl 1ca1ion 4
(m) Allopolyploidy 4
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(n) Morphology of chromosom?: 4
(o) Deletion 4
(p) Trisomy. 4
5. In sweet pca, the genes C and P when come together. produce purp 8 ?owers. But when either
C or P is present alone. it produces white ?owers.
What ?ower colours and their proportions will be produced in following crosses : 12
(i) CCPp X cc Pp (ii) (.?ch >< ccPP
(iii) Ccpp X cch (iv) ccl?P >< (?Cpp
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(q) Dihybrid cross with suitable cxample. 6
(r) Incomplete dominance with suitable example. 6
6. Comment on 2
(s) C ompletc linkagc 4
(t) Spontaneous Mutations 4
(u) Mitochondrial DNA. 4
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(v) Types of crossing-over. 4
(w) Induced Mutations 4
(x) Chloroplast DNA 4
7. Comment on :
(a) liolocnzyme
(b) Induced lit model of Enzymc action. 4
(c) Structure of Starch.
OR
(d) Isomcmses and Oxido-reduclasc. 4
(e) Lock and Key Model 0" Enzyme ?ction. 4
(0 Functions of Monosaccharidcs. 4
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