University of Kashmir-Faculty of Biological Science- Botany previous years question p

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University of Kashmir-Faculty of Biological Science- Botany Question Paper
1. Bacteria cannot survive in a highly salted pickle because
(A) Salt inhibits reproduction
(B) Pickle, does not contain nutrients necessary for bacterial growth
(C) Bacteria do not get enough light for photosynthesis
(D) Bacterial cells become plasmolysed and consequently killed
2. In which of the following conditions transpiration would be the most rapid?
(A) High humidity

(a) Podophyllum hexandrum
(b) Atropa belladonna
(c) Arnebia benthamii
(d) Viola odorata
70. Which of the following is essential for germplasm exchange ?
(a) Plant introduction
(b) Plant assessment
(c) Plant quarantine
(d) Plant adaptability
1. "Little leaf' disease of brinjal is caused by:
(a) viruses
(b) mycoplasma
(c) bacteria
(d) phytophthora
2. Adenoviruses are:
(a) DNA containing plant viruses, spheroidal in shape with projecting fibres
(b) RNA containing plant viruses, spheroidal in shape and enveloped
(c) DNA containing animal viruses, spheroidal in shape with projecting fibers
(d) RNA containing animal viruses, spheroidal in shape and enveloped
3. Cell walls of Deuteromycetes contain
(a) chitin-glucan
(b) mannan-glucan
(c) cellulose-glucan
(d) pectin-glucan
4. Morchella is a:
(a) Parasitic hymenomycete .
(b) Mycorrhizal gasteromycete
(c): Symbiotic plectomycete
(d) Saprobic discomycete
5. In some plants of Oedogonium, the androsporangia are produced on filaments which do not
bear oogonia. Such plants are said to be :
(a) Gynandrosporous
(b) Idioandrosporous
(c) Androsporous
(d) Gynosporous
6. Select the odd one out in respect of the nature of sexual reproduction
(a) Chlamydomonas debaryana
(b) Chlamydomonas media
(c)• Chlamydomonas coccifera
(d) Chlamydomonas eugametos
7. In which of the following species of Anthoceros the whole plant is covered with hair like
outgrowths forming water-holding chambers?
(a) A. arachnoides
(bl A. giganteus
(c) A. fusiformis
(d) A. laevis
8. In the stem of Polytrichum one or two layers of cells consist of dark brown suberized walls
and contain copious starchy contents. This tissue is called:
(a) Hydrom mantle
(b). Hydrom sheath
(c) Leptom mantle
(d) Piliferous layer
9. Rhynia belongs to :
(a) upper Silurian
(b) lower Devonian
(c) middle Devonian
(d} upper Devonian
10. Steles in which leaf gaps occur less frequently and are distantly placed are called:
(a) dictyosteles
(b) medullated steles
(c) perforated steles
(d). solenosteles
11. Which of the following is a single pass, single helix transmembrane protein?
(a) Glycophorin
(b) Spectrin
(c)• Band 3 protein
(d) Integrin
12. Which of the following ions facilitates assemblage of subunits into a complete ribosome?
(a) Na+
(b) Ca++
(c}, . Mg++
(d) Mn+
13. A plant carrying a duplicated chromosome segment is said to be
(a) Hemizygous
(b) Hyperploid
(c) Disomic haploid
(d), Addition haploid
14. Select the odd one out in terms of the genome constitution
(a) Gossypium hirsutum
(b) Nicotiana tabacum
(c) Musa esculentum
(d). Brassica juncea
15. The F2 progeny of "green-round" and "white-wrinkled" seeded parents contains
4 types of plants: (i) green-round seeded 10; (ii) "green-wrinkled" seeded
69; (iii) "white-round" seeded 85 and (iv) “white-wrinkled" seeded 15. This suggests:
(a) duplicate gene inheritance
(b) linkage in repulsion phase
(c)• independent assortment
(d) linkage in coupling phase
16. Which of the following enzymes has both exonuclease 3' ---+ 5' and exonuclease
5' ---+ 3' activities?
(a) cannot reeognise codons GCU, GCC and GCA
(b) can reeognise only codon GCU
(c) can reeognise only codon GCA
(d) can recogmse all the three codons
17. The anticodon IGC :
(a) .Prokayotic DNA polymerase I
(b} Prokaryotic DNA polymerase II
(c) Prokaryotic DNA polymerase III
(d) Eukaryotic DNA polymerase p
18. Which of the following mutations are likely to occur if DNA is exposed to proflavin dyes ?
(a) Suppressor mutations
(b) Frame shift mutations
(c) Transition mutations
(d) Transversions
19; Isopropyl thiogalactoside is
(a) an inducer
(b) a repressor
(c) a gratuitous inducer
(d) a co-repressor
20. When shed from the sporangium, the microspores have :
(a) one prothallial cell in Cycas and two in Ephedra
(b) two prothallial cells in Cycas and one in Ephedra
(c) one prothallial cell in both
(d) two prothallial cells in both
2. Select the odd one out
a) coralloid roots
b) loosely arranged megasporophylis
c) absence of neck canal cells .
(d) gametophytic endosperm.
22. Paleontological evidences reveal that the flowering plants had attained high degree of morphological
specialisation during:
(a)J Triassic
(b) Jurassic
(c) Cretaceous
(d) Palaeocene
23. On the basis of carpel and stamen morphology and structure of wood which of the following plants
seems to be primitive?
(a) Cucurbita spp.
(b) Solanum spp.
(c) Convolvulus spp.
(d) Degeneria spp.
24. +ffi, 1\5' C 5~~5 G(2) is the floral formula of :
(a)' Helianthus annuus
(b) Brassica campestris
(c) Lathyrus odoratus
(d) Ie.Solanum nigrum
25. A small cup shaped inflorescence con i ting of a single pistillate flower in the centre surrounded by
numerous staminate flowers is called
(a) Glomerule
(b) Cyathium
(c). Hypanthodium
(d) Verticillaster
26. Which one of the following is considered equivalent to perianth ?
(a)' Glumes
(b) Lodicules
(c) Superior palea
(d) Inferior palea
27. The process of grouping of organisms into taxa on the basis of overall similarities is called
(a) phenetics
(b)- cladistics
(c) alpha taxonomy
(d) beta taxonomy
28. "Systema Naturae" was written by:
(a) Charles Robert Darwin
(b) George Bentham
(c) Jean Baptiste Lamarck
(d) Carolus Linnaeus
29. According to Bentham and Hooker's classification system the order Rosales falls in which of
the following series?
(a) Thalamiflorae
(b)Bicarpillatae
(c) Calyciflorae
(d) Inferae
30. Which of the following plants is perennial and monocarpic ?
(a) Agave americana
(b) . Cocos nucifera
(c) Phoenix dactylifera
(d) ,; Hevea brasiliensis
Botany 6
31. Which one of the following is different from others in respect of the nature of its roots?
(a) Sonneratia sp.
(b) Avicinnia sp.
(c) Heritiera sp.
(d) Pandanus sp.
32. In some plants the leaves occur along a straight vertical line. This condition is called:
(a) Distichous
(b) Parastichous
(c) Orthostichous
(d)- Unistichous
33. Alburnum and Duramen respectively are alternate names of : .
(a) heartwood and sapwood
(b) sapwood and heartwood
(c) -porous wood and ring-porous wood
(d) ring-porous wood and diffuse-porous wood
34. The sclerenchyma of cortex originates from:
(a) Ra initials
(b) Fusiform initials
(c) Protoderm
(d) Periblem
35. The first lower most leaves of a plant's side branch are called
(a) cataphylls
(b)prophylls
(c) hypsophylls
(d) platyclades
36. The book entitled "Plant Embryology" was written by
(a) Karl Schnarf
(b) P. Maheshwari
(c) D.A. Johansen
(d) G. Davis
37. In respect of chromosome number which one of the following is different?
(a) Embryo sac
(b) Archesporium
'(c) Sporogenous tissue
(d). Spore mother cells
38. In Dianthus the style is much longer than the stamens. This condition is called:
(a) Dichogamy
(b) Herkogamy
(c)." Heterostyly
(d) None of the above
39. \If W of a living plant cell is the sum of :
(a) wall pressure and pressure potential
(b) wall pressure and matric potential
(c) osmotic potential and pressure potential
(d).. osmotic potential and solute potential
40. Which of the following diseases is caused in plants due to deficiency of Zn ?
(a) Heart rot of beats
(b) Whiptail of cauliflower
(c). Grey speck of oats
(d) Little leaf of apples
41. Which of the following compounds is a prosthetic group?
(a) FAD
(b) Biotin
(c) LDH
(d) NAD
42. A substrate fails to join the enzyme because its active site is deformed by an analogue of the
substrate. This process is called
(a) Allosteric inhibition
(b). Competitive inhibition
(c), E.nd product inhibition
(d) Feedback inhibition
43. Which of the following compounds serves as the electron donor during biological nitrogen
fixation ?
(a) 6-Phosphogluconic acid
(b) Acetyl phosphate
(c) Dinitrogeri reductase
(d).Pyruvic acid
44. For carbon fixation during "dark reaction" the three carbon atoms of each
PGA molecules are derived from:
(a) RuBP
(b) CO2
(c) RuBP + CO2
(d), RuBP + CO2 + PEP
45. Which one of the following facts explains "Warburg Effect" ?
(a)" Rate of photosynthesis decreases at low 02 concentration
(b) Rate of photosynthesis increases at low 02 concentration
(c) Rate of photosynthesis decreases at high 02 concentration
(d) Rate of photosynthesis increases at high 02 concentration
46"" The seeds of lettuce are
(a) non-photoblastic
(b) positively photoblastic
(c) negatively photoblastic
(d) ABA induced
47. Plant leaves are:
(a) . Plageotropic
(b) "Diageotropic
(c) Ageotropic
(d) Negatively geotropic
48. Which one of the following compounds shows "Richmond-Lang" effect?
(a) IAA
(b) ABA
(c) GA3
(d) Kinetin
49. The correct sequence of electron acceptors in ATP synthesis" is :
(a) Cytochrome a, a3' b, c
(b) Cytochrome b, c, a, a3
(c) Cytochrome b, c, a3' a
(d)." Cytochrome c, b, a, a3
50. Who amongst the following has contributed extensively to the study of Indian grass-land
ecology?
(a) R Misra
(b) G.S. Puri
(c) J.S. Singh
(d) RR. Das
51. Which of the following statements is true?
(a) The ecological pyramid of numbers is inverted in a tree ecosystem
(b) The ecological pyramid of numbers is upright in a tree ecosystem
(c) The ecological pyramid of numbers is inverted in herbaceous ecosystem
(d) The ecological pyramid of biomass is upright in an aquatic ecosystem
52. The plant species that thrive well in narrow salinity and narrow temperature ranges are called
respectively as :
(a) Euryhaline and Eurythermal
(b) Stenohaline and Stenothermal
(c) Steno1'r'aJ/ne and Eurythermal
(d) Euryhaline and Stenothermal
53. Acacia senegal and Rhizophora sp. respectively are
(a) Psammophyte-Lithophyte
(b) Lithophyte-Psychrophyte
(c) Psychrophyte-Halophyte
(d) Psammophyte-Halophyte
54. Morphologically different populations when grown in an identical habitat become uniform and the
variations disappear. Such populations are called:
(a)' Ecotones
(b) Ecoclines
(c) Ecads
(d) Ecotypes
55. A climax community represented by a single dominant species is called
(a)" Society
(b) Lociation
(C) Consociation
(d) Association
56. Which of the following plants produces a caryopsis ?
(a) Triticum aestivum
(b) Artemisia annua
(c).. Solanum tuberosum
(d) Lathyrus odoratus
57. The famous timber "Saguan" is obtained from
(a)Eucalyptus globosus
(b) Tectona grandis
(c)Shorea robusta
(d)Dalbergia sissoo
58. The common gunny bag fibre IS obtained from
(a) Crotolaria juncea
(b) Cocos nucifera .
(c) Corchorus capsularis
(d)Quercus superba
59. pBR327 is :
(a) yeast plasmid vector
(b) phagemid pBluescript vector
(c) pUC vector
(d) E. coli plasmid vector
60. Which of the following properties of Ti plasmids ofAgrobacterium made them a suitable
choice for use as vectors ?
(a) Large size
(b) Absence of unique restriction sites
(c) Tumour induction properties
(d) Presence of vir gene.

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Answered By StudyChaCha Member