1. Which lipid is abundant in chloroplast membranes?

Digalactosyldiacylglycerol

Monogalactosyldiacylglycerol

Phosphatidylglycerol

Sulfoquinovosyldiacylglycerol

2. The space between the outer surface of the c}1oplasmic membrane and the inner surface of the bacteria cell wall is called the

Stroma

Cy10plasm

Periplasm

Plasma membrane

3. Which organism uses light as source of energy and organic compounds as carbon source?

Autotroph

Chemolithoheterotroph

Photoautotroph

Photoheterotroph

4. The molecular chemical formula for chlorophyll a is

CSSH74N40sMg

CSSH76N40sMg

CssHnN60sMg

CssHnN40sMg

5. A large peripheral membrane antenna complexes found in cyanobacteria and red algae is

Phycobilisomes

Carotenoids

Xanthophylls

Anthocyanins

6. The generation of adenosine triphosphate by the movement of hydrogen ions across a membrane during cellular respiration or photosynthesis is called as which mechanism?

Osmosis

Chemiosmosis

Proton gradient

Photophosphorylation

7. The process of copying DNA into RNA is called

Transcription

Ribosomes

Translation

Recombination

8. Many cyanobacteria are capable not only of photosynthesis, but also of

Phosphorous Fixation

Fe fixation

Sulphur Fixation

Nitrogen fixation

9. Which of the following are not found in plant cells?

Golgi complexes

Mitochondria

Centrosomes

Peroxisome

10. Which of the following macromolecules are formed by condensation reactions?

Polysaccharides

Polypeptides

Fatty acids

Nucleic acids

11. Usual the shape of the bacteria cell can be determined by which of the following?

Nucleoid

Cytoskeleton

Cell wall

Plasma membrane

12. Cellular organelles containing hydrolytic enzymes are called

Lysosomes

Mesosomes

Peroxisomes

Proteolytic

13. The binding of substrate to enzyme is accomplished by the same types of interaction

Noncovalent

Covalent

Polar Covalent only

Nonpolar covalent only

14. Which inhibition is the process by which a regulatory molecule binds to an enzyme in a spot different from the active site for another molecule?

Competitive

Noncompetitive

Uncompetitive

Allosteric

15. A carbon atom with four different substituents is said to be asymmetric, and asymmetric carbons are called?

Enantiomers

geometric

Chiral centers

cis-trans, isomers

16. Which of the following amino acid is having guanidine group

Aspartate

Arginine

Histidine

Glutamate

17. How many amino acid residues occurred per tum in helical structure?

3.2

3.4

3.6

3.8

18. Disaccharides consist of two monosaccharides joined covalently by

O-glycosidic bond

Peptide bond

Phosphodiester bond

Hydrogen bond

19. The starch consists of long, unbranched chains ofD-glucose residues connected by which linkage?









20. Chitin is a long-chain polymer of_

Glucose

N-glucosamine

N-acetylglucosamine

glycosaminoglycans

21. Which of the following of the environment has the least storage capacity of matter

Lithosphere

Atmosphere

Biosphere

Hydrosphere

22. The most stable ecosystem is

Mountain

Desert

Forest

Ocean

23. The largest reservoir of nitrogen in our planet is the

Fossil fuel

Atmosphere

Biosphere

Ocean

24. Increase in fauna and decrease in flora would be harmful due to increase in

25. Deforestation generally decreases

Drought

Rainfall

Global warming

Soil erosion

26. Which of the following is a component of abiotic ecosystem

Plants

Humus

Bacteria

Fungi

27. The Earth Summit was held at

New Delhi

Washington

Rio de Janerio

Copenhagen

28. The plants rhizopora are grown in swampy areas and the roots produced by this plant grow vertically upwards from the ground are called as

Pneumatophores

Prop roots

Adventitious roots

Fibrous roots

29. Find out the right order of inflorescence(s) from the below given cartoon to

<img src='./qimages/16008-29.jpg'>

Corymb, cyme, capitulum, spadix

Cyme, corymb, spadix, capitulum

Capitulum, spadix, cyme, corymb

Spadix, capitulum, cyme, corymb

30. In monocot plants, the outer covering of endosperm separates the embryo by a proteinaceous layer is called

Aleurone layer

Coleoptile

Coleorhiza

Apocarpus layer

31. Enzymes that catalyze removal of groups from substrates by mechanisms other than hydrolysis leaving double bonds are called as

Hydrolases

Transferases

Lyases

Dehydrogenases

32. The capacity to generate a whole plant from any cell or explant is called as

Micropopagation

Somaclones

Totipotency

Vegetative propagation

33. A substance that inhibits the development of a fungus on hypersensitive tissue formed when host plant cells come in contact with the parasite.

Phytoalexin

Aflatoxin

Vincristine

Nematicide

34. Molecular landmarks that provide a profile ofmRNAs and allow cloning of a large number of genes being expressed in a cell population.

Microarrays

CRISPER-CAS

Expressed sequence tags

Silencing

35. The swollen tip of a hypha or germ tube that facilitates attachment and penetration of the host by a fungus is called

Appressorium

Haustorium

Apothecium

Ascostroma

36. Dependence of bacterial or spore behavior and pathogenicity on their cells reaching a certain density by sensing the concentration of certain signal molecules in their environment is called

Quorum sensing

Quarantine

Phyllody

Polyetic

37. What do you understand by term "Scutellum"?

It is type of human scrotal filariasis disease which is caused by Wuchereria bancrofti

It is a part of newly identified human organ mesentery which helps in protection of intestine

This a part of monocot seeds in plant

This a part of plant flower which help in sexual reproduction

38. Acetophenone is also known as

3-pentanone

Methyl phenyl ketone

Acetone cyanohydrin

Acetone phenylhydrazone

39. 0rlon is used as synthetic textile fiber in clothing and carpeting. It is obtained in the lab by polymerizing?

Vinyl chloride

Vinyl cyanide

Tetrafluoroethylene

Styrene

40. Hexachlorophene is an organochlorine compound which is sued as

Skin disinfectant

Water purifier

Dye for microbe identification

Anti-histamine to treat allergic rhinitis

41. Many heat sensitive items such as disposables, plastic petri-dishes, syringes, heart-lung machine components, catheters are now sterilize with which of the following gas treatment

Phosgene

Perchloroethylene

Ethylene oxide

Propylene oxide

42. Alkaline phosphatase is an enzyme which removes phosphate group from many biomolecules. This enzyme comprises which metal?

Iron

Copper

Zinc

Cobalt

43. Which of the following disease is related to rice crop

Bacterial blight and blast

Alternaria leaf blight and crown rot

Powdery mildew and crown gall

Charcoal rot and fusarium wilt

44. Two anticancer compounds "Vinblastine and Vincristine" isolated from a well known medicinal plant called

Taxus brevifalia

Withania somn(fera

Veronica officinalis

Catharanthus roseus

45. Molecular technique in which DNA sequences of interest can be amplified is known as

Southern blotting

Northern blotting

Polymerase chain reaction

cDNA library

46. The Southern blotting technique depends on

Similarities between the sequences of probe DNA and experimental DNA

Similarities between the sequences of probe RNA and experimental RNA

Similarities between the sequences of probe protein and experimental protein

The molecular mass of proteins

47. It is known that cactus is well adapted to the deserts. Which of the following characteristics would be detrimental to cactus to survive in hot and dry areas?

Thin leaves with a large surface area

A thick waxy cuticle

Water storage tissue

Deep root structure

48. The movement of water from soil to top of the tree is by which process follows from the bellow statements?

Osmosis

Capillary rise

Ionization

Adhesion cohesion mechanism

49. In the cytoplasm of living plant and animal cells under a light microscope, one can see several tiny dots. Which of the following organelle could it be?

Chloroplasts

Ribosomes.

Mitochondria

Nuclei.

50. You are given a photograph of a cell which has ribosomes,endoplasmic reticulum,chloroplasts, a nucleus, and a cell wall. Which of the following could be the source of this cell?

A fungus

An animal

A plant

A bacterium

51. The carnivorous habit of plants was evolved mainly to compensate for deficiency in soil for following element:

Potassium

Nitrogen

Calcium

Manganese.

52. Lichens which often grow on rocks or tree:

Require moist and sheltered place

Are prokaryotic organisms

Involve a fungus parasitizing an alga

Differ from their constituent organisms

53. The development of roots on the petioles of detached leaves prevents senescence of leaf, because root produces the following plant hormone.

Auxin

Cytokinin

Salicylic acid

Systemin

54. Which of the following application of genetics has maximally benefited mankind?

Plant breeding

Animal breeding

Genetic engineering

In vitro fertilization

55. Which of the following crop varieties was used for the 'Green Revolution' in the country?

Basmathi rice

Hybrid sugarcane

C S H jowar

Dwarfvariety ofwheat

56. An important peptide involved in scavenging superoxide radicals in plants is

Insulin

Glutathione

Beta-carotene

Ascorbate

57. Which mineral is essential for the activity of the enzyme nitrate reductase?

Copper

Iron

Molybdenum

Magnesium

58. The chemical substance found abundantly in the middle lamella of plant cells is

Suberin

Lignin

Cellulose

Pectin

59. The incorrect pair is

Cyanobacteria Primary producer

Grass hopper Primary consumer

Eagle Top carnivore

Zooplankton Secondary consumer


60. Which one of the following is a secondary pollutant?

CO

C02

S02

PAN (Peroxy acetyl nitrate)

61. One of the following is a hydrocarbon plant

Elaeis guinensis

Jatropha curcas

Musa paradisiaca

Calotropis gigantia

62. Soilless cultivation of plants is known as

Arboriculture

Hydroponics

Horticulture

Olericulture

63. The tree commonly called "subabul" is

Prosopis juliflora

Leucaena leucocephala

Pithecalobium saman

Albizzia lebbeck

64. Datura stramonium has 12 pairs of chromosomes(2n Howmanychromosomeswillbe found per cell in a double monosomic member ofthis species?

20

21

22

23

65. Sickle cell anemia is a monogenic disorder that produces abnormal hemoglobin S resulting in sickling of erythrocytes. Which of the following is incorrect about sickle cell anemia?

Carriers of the sickle cell allele are resistant to malaria

Red blood cells carrying mutant hemoglobin become sickle shape when deprived of oxygen

Individuals with two copies of sickle cell gene have the disease

Individuals afflicted with sickle-cell anemia are two time more likely to be males than to be females

66. A base substitution resulting in a different amino acid in the proteins are

Missense mutation

Nonsense mutation

Silent mutation

Neutral mutation

67. DNA microarray technologies are used widely for

DNA sequence analysis

Studying gene expression under certain conditions

Detecting DNA sequences in restriction fragments separated using gel electrophoresis

Locating DNA sequences in colonies grown in agar plats

68. Cinnabar eyes is a sex-linked recessive characteristic in fruit flies. If a female heterozygous for cinnabar eyes is crossed with a wild-type male, what percentage of the F1 males will have cinnabar eyes?

25%

50%

75%

100%

69. Two genes of a flower, one controlling Blue versus white petals and the other controlling round versus oval stamens are linked and are 20 map units apart. A cross is made between a homozygous blue-oval plants with a homozygous white-round plant. The resulting F1 progeny are crossed with homozygous white-oval plants, and 1000 F2 progeny are obtained. How many F2 plants with blue-oval phenotypes are expected?

100

200

400

800

70. A dicentric chromosome IS produced when crossing over takes place in an individual heterozygous for

Paracentric inversion

Pericentric inversion

Deletion

Duplication

71. Gregor Johann Mendel worked on garden pea with diploid chromosome number 2n 14 and discovered laws of inheritance. Imagine, had Mendel studied the seven different traits, each trait controlled by different alleles of a single gene, with all the seven genes being present on single homologous chromosome pair and are not very far apart, then he would not have possibly discovered

Law of dominance

Law of segregation

Law of independent assortment

Dominant and recessive alleles of a gene

72. A cross is made in Neurospora to determine the distance of the gene from its centromere. It was found that 90 asci showed first-division segregation pattern and 25 asci showed second­division segregation pattern. Then the map distance from gene to centromere is

10.9 map units

14 map units

21.7 map units

39 map units

73. Vascular bundles are bicollateral in

Poaceae

Anonaceae

Boraginacae

Malvaceae

74. Which of the following plant organ is the main site of transportation

Lenticels

Leaf

Root

Stem

75. Leaf tendrils are found in

Arabidopsis

Heliotropism

Sunflower

Clematis

76. Which of the enzymes is involved in Glyphosate resistance

5-enolpyruylshikimate -3-phosphate synthase

Phosphoenol pyruvate Carboxylase

Phosphoinothricin N-Acetyltransferase

Hexokinase

77. Casparian strips in the root endodermal cells are rich in

Lignin

Chitin

Cellulose

Suberin

78. Browning of apple occurs due to

Oxidation of polyphenols

Reduction of polyphenols

Oxidation of o-quinones

Reduction of o-quinones

79. Which one of the following is not a genome-editing tool

Zinc Finger Nucleases

Transcription activator-like effector nucleases

Clustered regularly interspaced short palindromic repeats

S1 nucleases

80. Which is a correct statement in case ofDNA binding property of Zinc Finger Nucleases and Transcription activator-like effector nucleases (TALEN)

ZFN binds to a codon whereas TALEN binds to single nucleotide base

TALEN binds to a codon whereas ZFN binds to single nucleotide base

Both bind to a codon

Both bind to single nucleotide base

81. The insecticidal protein produced by Bacillus thuringiensis bacterium in BT transgenic plants is

Amylase

Protease

Proteinase K

Cry protein

82. Root hairs are extension of

Epidermal cells

Pericycle cells

Endodermal cells

Cortical cells

83. Ozone is pollutant in

Stratosphere

Troposphere

Thermosphere

Tropopause

84. Endosperm is a prominent feature in the seeds of

Dicotyledons

Gymnosperms

Monocotyledons

None of the above

85. The plant hormone responsible for the breaking of seed dormancy is

Abscisic acid

Gibberellins

Brassinosteroids

Auxin

86. In plant tissue culture, root formation is promoted by

High auxin to cytokinin ratio

High cytokinin to auxin ratio

High auxin to gibberellins ratio

None of the above

87. Epipetalous, syngenesious, hooded stamens are found in family

Lamiaceae

Asteraceae

Solanaceae

Euphorbiaceae

88. Polyadelphous condition is found in

Legurninaceae

Rutaceae

Composiate

Liliaceae

89. Indefinite stamens are characteristic of family

Malvaceae

Poaceae

Cruciferae

Solanaceae

90. Heavily polluted water zone of reservoir is known as

Pleosaprophytic zone

Mesosaprophytic zone

Oligosaprophytic zone

Neosaprophytic zone

91. Which of the following is known to control Colorado potato beetle?

Metarhizium anisopliae

Verticillium lecauii

Beaveria bassiana

Nomuraea rileyi 15

92. During which phase of growth ofPenicillium chrysogenum maximum antibiotic production takes place

During the first phase

During the second phase

During the third phase

Same in all the phases

93. Fermentation medium for oxytetracyclin (terramycin) consist of

CSL, starch, (NH4)2S04, NaCl and CaC03

CSL, (NH4)2S04, NaCl and CaC03

CSL, starch, (NH4)2S04, NH4CI and CaC03

CSL, (NH4)2S04, NH4CI and CaC03

94. Identify the mismatch

Molecular chaperones -Aid a newly synthesized polypeptide in folding to its proper shape

Tetracycline -Blocks the binding of amino-acyl tRNA to the A site of ribosomes

Quorum sensing -Detects a signal from the external environment

Haemophilus injluenzae -First bacterial genome to be sequences and made public

95. Which of the following acid will have higher bacteriostatic effect at a given pH?

Acetic acid

Tartaric acid

Citric acid

Maleic acid

96. Which of the following is not true for the thermal resistance of the bacterial cells?

Cocci are usually more resistant than rods

Higher the optimal and maximal temperatures for growth, higher the resistance

Bacteria that clump considerably or form capsules are difficult to kill

Cells low in lipid content are harder to kill than other cells

97. The ability of Vibrio jischeri to convert chemical energy directly into radiant energy in bioluminescence is an example of at work.

Shelford's law of tolerance

Leibig's law of minimum

The first law of thermodynamics

The third law of thermodynamics

98. The whole-genome shotgun sequencing approach depends primarily on

Rapidly sequencing thousands of small randomly cloned fragments

Methodical sequencing a few large cloned fragments of DNA

Sequencing the bacterial chromosome while it is still intact

None of those mentioned above

99. Which of the following statement is correct?

All members of photo lithotrophic autotrophs are also members of algae,but not all members of algae are members of photolithotrophic autotrophs

All members of algae are also members of photolithotrophic autotrophs, but not all members of photolithotrophic autotrophs are members of algae

All members of photolithotrophic autotrophs are members of algae, and all members of algae are members of photolithotrophic autotrophs

No member of photolithotrophic autotrophs is a member of algae

100. Post-translational modification is a process of bioluminescence is an example of at work.

Enzymatic modification after protein biosynthesis

Carbohydrate modification

Nucleic acid modification

All Amino acid modification gets after or before protein biosynthesis