28/06/2016 College Lecturer Exam BotanyI
1/43
Rajasthan Public Service Commission 2016
Paper BotanyI
Ques: 150
Time: 3 Hours

1. Haplontic type of alternation of generation is found in

Chara

Ectocarpus

Enteromorpha

Ulva

2. Which of the following algae have nonflagellate coenobia

Eudorina

Pandorina

Pediastrum

Volvox

3. Algae that contain chlorophyll a and c are commonly known as

Chromophyta

Euglenophyta

Dinophyta

Glaucophyta

4. Which of the following is a procaryotic alga which possesses chlorophyll a and b

Noctiluca

Nereocystis

Prochloron

Protoctista

5. Which of the following alga is a good source of bromine

Digenia

Gymnodinium

Laminaria

Rhodomela

6. Formation of statospores is a characteristic feature of

Chlorophyta Division

Chrysophyta Division

Phaeophyta Division

Pyrrophyta Division

7. Outer layer of cell wall is made up of algin in

Corallina

Gelidium

Macrocystis

Porphyra


8. Which of the following genera of Rhodophyta has unicellular thallus

Chondrus

Corallina

Porphyridium

Rhodymenia

9. Total absence of flagella is the characteristic feature of

Chlorophyta and Cyanophyta

Chrysophyta and Chlorophyta

Phaeophyta and Rhodophyta

Rhodophyta and Cyanophyta

10. The most important alga used as food in Japan is

Furcellaria fastiagata

Gleopeltis furcata

Microcystis aeruginosa

Porphyra tenera

11. Which of the following fungal group belongs to phylum Straminopila

Ascomycota

Basidiomycota

Zygomycota

Oomycota

12. Identify a fungal genus from the following representing isomorphic alteration of generation

Euallomyces

Coelomomyces

Blastocladiella

Monoblepharis


13. Which of the following fungal genera has monoplanetic zoospores

Saprolegnia

Albugo

Phytophthora

Albugo and Phtyophthora


14. Which of the following fungal genera is a biotroph

Peronospora

Puccinia

Erysiphe

All of these

15. The type of association formed by Arbuscular Mycorrhizal fungi with plants is known as:

Mutualism

Obligate Symbiosis

Symbiosis

Commensalism

16. Which of the following characters of " Slime Molds " places them in fungi

Cell wall of Chitin

Sporulation

Absorptive Nutrition

All of these

17. Unicellular stalked teleutospores with papillar thickening is a characteristic feature of the following rust genera

Uromyces


Puccinia


Phragmidium


Ravenelia

18. The extended dikaryophase in Ascomycetes is represented by

Ascogenous hyphae

Somatic mycelium

Ascus mother cell

Ascogenous hyphae and Ascus mother cell

19. Which of the following zoosporic fungi has nuclear cap in its zoospores

Blastocladiella emersonii

Apodachlya brachynema

Plasmodiophora brassicae

Phytophthora infestans

20. Which of the following fungal genera is formed as an anaerobe in the gut of herbivorous animals

Olpidium

Caulochytrium

Neocallimastix

Lynomyces

21. The clampconnections in Basidiomycetes are meant for

Fast growth of mycelium

Cross communication with adjacent cell

Transfer of metabolites

Maintenance of dikaryophase in growing mycelium


22. Dipicolinic acid is as important and major component of

Endosporic gram positive bacteria

All gram negative bacteria

All gram positive bacteria

Actinomycetes

23. The enzyme lysozyme attacks which part of the bacterial cell wall?

Bonds connecting NAM NAG Sugar

Pentaglycine bridge

Both NAM NAG bonds and Pentaglycine bridge

Amino acid chain

24. Cyanobacteria are known to possess which of the following pigment molecules different from normal chlorophyll

Pheophytin

Phycobilins

Xantophylls

All of these

25. Archaea are different from other bacteria in which of the following characters

Size and shape

Flagellar function

Membrane structure

Prokaryotic nature

26. The baculoviruses that are used as biocontrol agents act against

Nematodes

Fungi

Insects

bacteria

27. Phylogenetic studies on Phytoplasma based on 16 SrRNA gene sequencing indicate their closest relationship with

Spiroplasma

Mycoplasma

Acholeplasma

Rickettsia
.
28. Which of the following diseases is not caused by viroids

Potato Spindle Tuber

Banana Bouncy Top

Citrus Exocortis

Coconut CadangCadang

29. Viroids are known by the following characters

Circular Single Stranded 250370 nucleotide long RNA

Circular Double Stranded 460625 nucleotide long RNA

Helical Single Stranded 246380 nucleotide long RNA

Circular Double Stranded 246380 nucleotide long RNA

30. The classification of bacteria based on phylogenetic studies uses 16 SrRNA sequence because

It contains about 1500 nucleotides

Sequencing is easy

isolation of other RNAs is difficult

None of These

31. The movement protein produced during replication of TMV has a molecular weight of

126 K

183 K

17.6 K

30 K


32. Which of the following bacteria has an extra plasmamembrane outside the cell wall

Agrobacterium

Clostridium

Staphylococcus

Bacillus

33. Systematic acquired Resistance (SAR in plants against pathogens can be induced by

Salicylic acid

Benzothiazole

Isonicotinic Acid

All of these

34. Which of the following are parasitic flowering plants

Cuscuta

Orobanche

Striga

All of these


35. The apple scab disease is caused by

Xanthomonas citri

Venturia inaequalis

Colletotrichum falcatum

Curvularia prasadii

36. Blackwart disease of potato is caused by

Synchtrium endobioticum

Olpidium solanacearum

Agrobacterium tumefaciens

Protomyces macrosporus

37. In which of the following smut diseases a columella is present in the infected region

Loose smut of wheat

Grain smut of Jowar

Smut of Bajra

Covered smut of Barley

38. The 'Tundu disease of wheat is caused by

Anguina triticia and Corynebacterium tritici

Anguina tritici

Anguina tritici and Erwinia dissolvens

Globodera tritici

39. The cyst nemotide belongs to which of the following genera

Meloidogyne

Anguina

Heterodera

Xiphinema

40. Which of the following metabolites is known to play an important role in defense against pathogenesis

Victorin

Phenolics

Proteins

Auxins

41. Match the following sets and identify the correct pair

T.S. Sadasivan Role of fusaric acid in wilt of cotton

H. C. Arya Cycle of wheat rust in the plains of India

P. Millardet Axenic culture of sclerospora graminicola

K. C. Mehta Discovery of Bordeaux mixture

A-a

B-a

C-c

D-d

42. The " Great Bengal Famine " in 1943 was the result of which of the following

Bunt of wheat caused by Telletia

Helmithosporium blight of rice

Blast of rice caused by Pyricularia

Late blight of potato caused by Phytophthora

43. The type of symptoms produced by Pythium is

Damping off of seedlings

Early blight

Anthracnose

Leafspots

44. Match the following sets and identify the correct pair

Downy Mildew Meloidogyne incognita

Powdery Mildew Sclerospora graminicola

Tikka Disease Cercospora arachidicola

Root Knot Alternaria Solani

A-b

B-d

C-a

D-c

45. Match the following sets and identify the correct pair

Phaseollin Cucumber

Glyceollin Pepper

Rishitin Capparis

Capsidiol Potato

A b

B b

C d

D d

46. During rainy season a farmer notices golden brown exudates from the earheads of Bajra crop in field. The possible reason for this could be onset of

Rotting Disease

Greenear Disease

Ergot Disease

Smut Disease

47. 'Grassy shoot of sugarcane' is caused by which of the following phytopathogens

Mycoplasma

Viroid

Phytoplasma

Spiroplasma

48. Pathogenesis related proteins are those macromolecules which are known to induce

Resistance in plants

antifungal and antimicrobial activity in plants

Toxicity towards plants

Phenolic production in plants

49. jacket of neck of archegonium in Marchantiales, Jungermanniales and Calobryales consists of

5 and 6 cells

5 4 and 6 cells

5 and 4 cells

6 4 and 5 cells

50. Basal elaterphore present in the capsule of Pellia develops from

Elater mother cells

Sterile sporogenous cells

Fertile sporogenous cells

Amphithecium

51. Non columellate species of Notothylas is

Notothylas indica

Notothylas orbicularis

Notothylas leveri

All species of Notothylas

52. Airgun mechanism of spore dispersal is present in

Sphagnum

Funaria

Frullania

Pogonatum

53. Which one of the following pteridophytes is zerophytic

Azolla

Salvinia

Marsilea

Equisetum arvense

54. Arthur J. Eames (1936) classified Tracheohyta into four groups on the basis of

Vascular Anatomy

Position of Sporangia

nature and relation of leaf and stem

All of these

55. Which one the following is extinct genus of Sphenopsida

Calamites

Annularia

Equisetum

Calamites and Annularia

56. Select the correct pair

Plectostele Lycopodium serratum

actinostele L. clavatum

Mixed Protostele L. cernum

amphiphloic siphonstcle Selaginella

57. Prismatic tissue is found in which of the following genera of Pteridophyta

Selaginella

Isoetes

Marsilea

Ophioglossum

58. Match List I (Types of Stele) and List II (Names of Genera) and find the correct answer with the help of codes given below

List I (Types of Stele) LIST II(Genera)

Protostele Marattia
Siphonostate Selaginella
Dictyostele Equisetum
Polycyclic Pteris

A ii, B iii, C iv, D i

A iii, B ii, C iv, D i

A iv, B iii, C ii, D i

A B ii, C iii, D iv


59. The living members of which family are often called living fossils

Osmundaceae

Ophioglossaceae

Marattiaceae

Marsileaceae

60. Laminar hypthesis for the morphological nature of Marsilea sponcarp was supported by

Campbell

Bower

Eames

All of these

61. Stelar theory was proposed by

Zimmerman

Van Tieghem and Douliot

Eames

Foster and Gifford

62. The correct sequence of the elementary processes of Telome theory is

Overtopping Planation Syngenesis and Reduction

Overtopping Planation Syngenesis Reduction and Curvation

Planation Syngenesis and Reduction

Syngenesis Reduction and Curvation

63. Microspores in Cycas, Pinus, and Ephedra are released from microsporangium at

4 3 and 5 celled stage

3 4 and 5 celled stage

4 5 and 3 celled stage

5 4 and 3 celled stage

64. According to Articles 29 31 of International code of Botanical Nomenclature effective publication of new names requires

The printed material is made available to the public through its publication in a Journal

The name of author and the rank must be given

The name must be accompanied with a full or at least a diagnostic description in Latin

The name must have proper form for its rank

65. Which among the following is the largest and oldest Botanic Garden in South East Asia
Lloyd Botanic Garden Darjeeling India

Indian Botanic Garden Howrah India

Royal Botanic Garden Peradeniya, Sri Lanka

National Botanical Garden Mirpur, Dhaka, Bangladesh

66. In the flora of Rajasthan the family having maximum number of genera and species is

Asterceae Family

Cyperaceae Family

Leguminoceae Family

Poaceae Family

67. When no original type material is available and a specimen collected from type locality is chosen to serve as type, it is called

Isotype

lectotype

Neotype

Topotype

68. Which date is taken for purposes of rule of priority Article 11 of ICBN) as the starting point for spermatophytes

151753

151853

111908

111935

69. Match List I and List II and select the correct answer with the help of codes given below
List I (Theory) LIST II(Proposer)

Bennittitalean Ancestry Engler Prantl
Gnetalian Ancestry Long
Conferalean Ancestry Saporta Marion
Pteridospermean Ancestry Wettstein

Codes









70. Which among the following groups of genera have unisexual flowers

Ecballium Triticum and Bridelia

Gymnema Tylophora and Manihot

Lagenaria Benincasa and Mallotus

Stapelia Ceropegia and Tragia

71. Which of the following families is characterised by its leaves distinguishable into a sheath and blade

Asclepiadaceae

Cucurbitaceae

Euphorbiaceae

Poaceae


72. Match List I with List II and select the correct answer using the codes given below the lists

List I (Family) List II (Order)

Asclepiadaceae Gentianales

Cucurbitaceae Passiflorales

Euphorbiaceae Rosales

Leguminosae Unisexualales










73.

Consider the following statements

Drawback of Hutchinson's system of classification is that it is based on
habit of plants.
Takhtajan's system of angiosperm classification is not in accordance with rules and
regulations of International Code of Botanical Nomenclature.
Engler and Prantl have regarded Amentiferae as an advanced group.

Which of the above statement/s is/are correct

Only

Only

and

and

74. Number of fertile stamens and stamonodes in Tamarindus indicus is

3 and 4 respectively

4 and 3 respectively

3 and 7 respectively

7 and 3 respectively

75. Which of the following possesses monodelpous stamens and apocarphous gynoecium

Calendula

Calotropis

Croton

Cucumis

76. Consider the following statements

Capitulum is a racemose type of inflorescence .
Axile placentation is found in Asclepiadaceae.
Cyathium type of inflorescence is found in all the members of Euphorbiaceae.

Which of the above statement/s is/are correct

Only

Only

and

and

77. A plant name in which the specific name exactly repeats the generic name is known as

Autonym

Basionym

Homonym

Tautonym

78. Who used the word Magnoliopsida for dicotyledones

Bentham Hooker

Engler Prantl

Hutchinson

Takhtajan

79. Roots with a dermatocalyptrogen is a common feature of the members of

Cyperaceae Family

Liliaceae Family

Poaceae Family

Solanaceae Family

80. The Tunicacorpus theory was given by

Hanstein (1870)

Schmidt (1924)

Johnson (1951)

Guttenberg (1960)

81. In majority of dicotyledons the number of Tunica layers is

Two

Six

Eight

Ten

82. Which of the monocot families possess stipulate leaves

Amaryllidaceae and Alismataceae

Cyperaceae and Poaceae

Hydrocharitaceae and Butomaceae

Palmae and Liliaceae

83. Example of primitive nature of angiospermic flowers are

Drimys and Wintera

Lilium and Crocus

Passiflora and Parkinsonia

Vitex and Vitis

84. Conduplicately folded leaf like carpels are found in

Cucurbita

Cuscuta

Derris

Drimys

85. Angiosperm originated during

Carboneferous period

Cretaceous period

Jurassic period

Triassic period

86. which of the following groups of families are characterized by the occurrence of laminar stamens

Caryophyllaceae Degenariaceae and Tiliaceae

Nymphaeaceae, Austrobaileyaceae and Degenariaceae

Papaveraceae, Brassicaceae and Austrobaileyaceae

Ranunculaceae Papaveraceae and Nymphaeaceae

87. Which of the following is an example of primitive angiospermic flower

Polygonum

Tripogon

Urochloa

Wintera

88. Distal part of apical meristem of roots is

lateral in position

Sub lateral in position

Terminal in position

Sub Terminal in position


89. Match List I (Scientist) with List II (discoveries) and select the correct answer with the help of code given below

List I Scientist List II (Discoveries)

Cameraius (1694) Pollen Tube
Amici (1830) Male
and female sex organ
Strasburger (1884) Syngamy
Nawaschin 1898) Double Fertilisation

A B ii, C iii, D iv

A ii, B C iii, D iv

A iii, B C ii, D iv

A iv, B iii, C ii, D i


90. Only one microsporangium per anther is found in

Moringa

ChinaRose

Mustard

Arceuthobium

91. Tapetum arises from sporogenons tissue in

Triticale spp

Antirrhinum majus

Alecina thomsonii

Typha

92. Compound pollen grains are found in

Drosera

Drimys

In Drosera and Drimys both

Calotrophis


93. TTC Triphenyltetrazolium chloride) is used to test viability of pollen grains Why the viable pollen grains turn red

TTC is red colored.

Reduction of the TTC to red dye formazan

Oxidation of the TTC to red dye formazan

Pollen grain wall is stained with TTC


94. Pollen Tube wall at the cap block region is very rich in

Pectin

Cellulose

Callose

Pectin and Cellulose

95. Commercial castoroil is obtained from which part of castor bean

Cotyledons

Endosperm

Seed Coat

Embryo

96. Liver mechanism of entomophilous pollination is found in

Salvia

Yucca

Rafflesia

Nyctanthes

97. Cleavage polyembrony arising during seed development is known as

Orchids

Santalaceae

Vanda

Poa alpina

98. Aril the third integument found in nutmeg arises from

Funiculus

Testa

Funiculus and Testa both

Microphylar portion

99. Parthenocarphy found in tomato and capsicum is

Genetic

Environmental

Chemically Induced

Genetic and Chemically Induced


100. Select the correct pair

Smallest flower Rafflesia

Largest Flower Wolffia microscopica

Carpel without style Drimys

Carpels are borne apparently terminal All families

101. On the basis of distribution of gases the atmosphere has zonation in one of the following orders

Troposphere Mesosphere, Stratosphere, Ionosphere and Exosphere

Mesosphere, Stratosphere, Troposphere Ionosphere and Exosphere

Ionosphere Stratosphere Mesosphere, Troposphere and Exosphere

Troposphere ,Stratosphere, Mesosphere, Ionosphere and Exosphere

102. Which one is the correct zenation of vegetation from equator to pole of the earth

Tropical rainforest, Desert and grassland, Deciduous forest, conifer and Moss and Lichen

Desert and grassland, Moss and Lichen, Tropical rainforest, conifer and deciduous forest

Deciduous forest, tropical rainforest, grassland and desert, conifer and Moss and Lichen

Moss and Lichen, Tropical rainforest, deciduous forest, grassland and desert and conifers

103. In temperate climate, the leaf litter which falls from the tree is degraded very slowly and the basic compounds present on the upper surface are transported to deeper layer of soil due to rain . With the result the upper layer of soil becomes acidic in nature. The formation of this upper layer of soil is called

Melanization

laterization

Podsolization

Gleization

104. The vegetation having pneumatophores prop roots, viviparous type of seed germination and stem with thick cuticle are characteristics of

Xerophytes

Mangroves

Succulent Xerophytes

Epiphytes

105. In India tropical humid evergreen forests are found in

Eastern Ghats and Western Himalayas

Western Ghats and Andman groups of Islands

Central India and Bengal

Indogangetic Plain and Indus River

106. Savannal biomes are characterized by

Xerophyte plants and the rainfall is less than 10 inch

Small coniferous trees and the rainfall is 1020 inch per year

Grassland with scattered tress and the rainfall is 4060 inches per year

Dense forest and the rainfall is 80100 inches per year

107. The tree which is considered most important for survival of man in desert of Rajasthan

Acacia senegal

Calligonum polygonnides

Capparis decidua

Prosopis cineraria

108. plant species which are genotypically distinct, interfertile and occur in distinct habitat are called

Ecad

Ecotype

Ecoline

Coenospecies

109. In a population the organisms which are left after the death of organisms are called survivors. If a group is plotted between number of survivors and their age life span) then different shapes are formed. But if most of the members of living population complete their normal biotic potential and their death occurs with old age, in such living population the survivor graph will be of shape

Concave

Convex

Sigmoid

Diagonal

110. On the basis of Growth forms the cryptophytes are characterized as

The perennating buds or structure of the plants are protected below the soil

The perennating buds or structures are above the ground up to 25 cm.

In such plants, perenating buds or structure are not present

The perennating buds o0r structures are more than 30 cm above the ground

111. If one wants to study the structure and stratification of plant community which method will be most suitable

Plot less Method

Chart Method

Count Method

Transect Method

112. Select the one which shows correct sequence of stages in plant succession

Alga and Crustose lichen stage Foliose lichen stage, Herbaceous Stage, Moss Stage, Shrub Stage and Tree

Foliose lichen stage, Moss Stage Crustose lichen stage Shrub Stage Herbaceous Stage and Tree

Crustose lichen stage Foliose lichen stage, Moss Stage Herbaceous Stage, Shrub Stage and Tree

Alga and Crustose lichen stage Foliose lichen stage, Herbaceous Stage, Moss Stage, Shrub Stage and Tree

113. Pyramid of biomass of pond and forest ecosystem is

Straight in both

Straight and inverted, respectively

Inverted and straight respectively

Inverted in both

114. In a food chain the amount of energy received by secondary consumer from primary consumer is

0.1

01

10

50

115. Mycorrhiza helps in mobilization of one of the minerals from soil to the plant is

Copper

Sulphur Only

Nitrogen Only

Phosphorus

116. <img src='./qimages/4189-4.jpg'>

A B C D

A B C D

A B C D

A B C D


117. Which of the following is called super green house gas/gases

CFCs Chloro Fluro Carbon

HCFs (Hydro Chloro Fluro Carbon

HFCs Non chlorinated hydro Fluro Carbon

CO2

118. According to Mace and Lande (1991) an endangered species

Has 20 probability of extinction within 20 years or 10 generations

Has 50 or more probability of extinction within 5 years

Has 10 probability of extinction within 100 years

Has 20 probability of extinction within 5 years or 2 generations

119. Which plant species in particular indicate burnt and highly distributed coniferous forests

Cassia obtusifolia

Pteridium spp

Quercus marilandica

Amaranthus spp

120. According to the report of Ministry of environment and Forest (2012) the number of National Parks and wild life sanctuaries in Rajasthan are respectively

5 and 23

5 and 25

5 and 35

5 and 15

121. The only breeding place for flamingoes in India is

Gangetic Plain

Marine coasts

Deccan peninsula

Desert

122. Minimata epidemic was caused by methyl mercury. Methyl mercury penetrates in children through

Blood

Placenta

Genitals

Water

123. Which Ministry of Govt. Of India is assigned the responsibility for carrying out Environmental impact Assessment of developmental projects

Ministry of HRD

Ministry of Environment and Forest

Ministry of Defence

Ministry of Law

124. Loudness is also expressed in sones . One sone equals the loudness of

80 db, at 1000 hz

40 db, at 1000 hz

100 db, at 1000 hz

20 db, at 1000 hz

125. <img src='./qimages/4189-125.jpg'>

126. IUCN (the International Union for Conservation of Nature and Natural Resources) in 2012 recognized how many Red List categories of species

4

5

9

10


127. The chief constituent of photochemical smog in metropolitan areas is


1)N2O

2)NO

3)NO2

4)NH3

128. The Environment (protection) Act was promulgated in

27 May,1986

5 June,1986

23 May,1986

16 May,1981

129. The two main characteristics of a hotspot are

The area must contain 0.5 of world's 3,00,000 species and should have lost 70 or more of its primary
vegetation

The area must contain 5 of world's 3,00,000 species and should have lost 50 or more of its primary
vegetation

The area must contain 0.5 of world's 3,00,000 species and should have lost 50 or more of its primary
vegetation

The area must contain 15 of world's 3,00,000 species and should have lost 70 or more of its primary
vegetation


130. Consider the following statements
Fatty oils consists of glycerin in combination with a fatty acid
Fats generally contains oleic acid
Arachis hypogia seed oil is nondrying oil

Which of the above statement/s is/are correct

Only

Only

and

and

131. The oil content of the improved varieties of soybean is

5 to 8

11 to 14

19 to 22

27 to 30


132. Which of the following is the first sugar to be manufactured by the plants

Fructose

Glucose

Maltose

Sucrose


133. Which of the following is an old world plant cultivated over 4000 years

Peanut

Potato

Tea

Tobacco

134. Which of the plants are the natives of South eastern Asia

Cotton and Guava

Tomato

Red pepper and Peanut

Rice and Sugarcane

135. Consider the following statements
Jagannath, Jamuna and Jaya are the high yielding Indian varieties of Rice.
Safed lerma Lerma Rojo and choti Lerma are the high yielding wheat varieties of India.
NP4, NP 52 and NP 125 are the high yielding Indian varities of Bajra. Which among the above statement(s) is/are correct

Only

(c)Only

and

and


136. Which of the following has the maximum amount of protein in its grains

Barley

Maize

Rice

Wheat

137. Match List I with List II and select the correct answer using the codes given below
List I (Pulses) List II (Botanical Names)

Black gram Vigna aconitifolia
Cow Pea Vigna mungo
Green Gram Vigna radiata
Moth Vigna unguiculata










138. Match List I with List II and select the correct answer using the codes given below
List I Medicinal Plants) List II (Parts Used)

Atropa belladona Bark
Cinchona officinalis Leaves
Ehedra gerardiana Roots
Rauvolfia serpentina Stem










139. Alkaloid scolomine is obtained from

Atropa belladona

papaver somniferum

Rauvolfia serpentina

Withania somnifera

140. Which one of the following is a correct statement

Coffee plant is native of England.

Coffee was brought to India by the East India Company

Karnataka, Kerala and Tamil nadu are the three major coffee producing stated of India

Coffee plant is a member of family Leguminosae


141. Consider the following statements
India is the largest tea producing country in the world.
In congue grade of tea the smallest leaf is used
The grade of tea depends on the age of the leaves.

Which of the above statement(s) is/are correct

Only

Only

and

and


142. Pseudoembryosac is found in

Cruciferae

Capparidaceae

Podostemaceae

Poaceae

143. Freeze fracture electron microscopy allows visualization of

Surface Structures

Cell Organelles

Interior of Cell membrane

All of these

144. The resolving power of a light microscope depends upon which of the following factors

Wavelength of the light used

Numerical aperture

Refractive Index

All of these

145. The glutaraldehyde used during transmission electron microscopy is meant for

Dehydration of tissues

Fixation of protein molecules

Softening of tissues

Stabilization of lipid bilayer

146. The confocal electron microscopy enables

Collection of 3D data

Optical Sectioning

Better depth resolution

All of these

147. In spectophotometry the absorbance of a colored solution is dependent upon

Concentration only

path length only

Both Concentration and path length

None of These

148. Enzymelinked Immunosorbent Assay was developed by

Engvall and perlmann in 1971

Engvall and Richardson in 1971

Richardson in 1978

Voller, Bartlett and Bidwell in 1978


149. Electrophoresis is a technique by which one can separate which of the following?

Proteins

Proteins and DNA

DNA

Proteins DNA and Isozymes


150. In an electrophoresis experiment for separation of protein a decrease in migration was observed. What could be the reason

Increased molecular size

Increased ionic strength

Increased current

Both Increased molecular size and increased ionic strength