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1st half of 12th chemistry and biology

Total questions: 100

Worksheet time: 1hrs 7mins

Name
Class
Date
1.

in bryophytes and pteridophytes, transport of male gametes occurs by

a)

wind

b)

insects

c)

water

d)

birds

2.

in ginger vegetative propagation occurs by

a)

runners

b)

rhizome

c)

offsets

d)

bulbil

3.

which of the following is monoecious

a)

papaya

b)

merchantia

c)

pinus

d)

cycas

4.

pollination by insects or wind occurs in which of the following

a)

water hyacinth

b)

zostera

c)

hydrilla

d)

water lily

5.

which of the following are not true

a)

stored pollen in liquid hydrogen can be used for crop bleeding programmes

b)

exine of pollen grains is made up of sporopollenin

c)

pollen grains of several species cause severe allergies

d)

tapetum helps in the dehiscence of anther

6.

apomixis can be defined as

a)

fruit formation without fertilization

b)

plant formation without fertilization

c)

seed formation without fertilization

d)

ovule formation

7.

which of the following are false fruit

a)

banana

b)

brinjal

c)

apple

d)

strawberry

8.

advantage of cleistogamy

a)

have no reserve food

b)

more vigrous offsprings

c)

no dependence on pollinators

d)

viviparity

9.

plants with ovaries having one or few ovules are generally pollinated by

a)

bees

b)

butterflies

c)

birds

d)

wind

10.

wind pollination is common in

a)

orchids

b)

legumes

c)

lilies

d)

grasses

11.

transfer of pollen grains from anther to stigma of different flower of same plant is called as

a)

geitonogamy

b)

xenogamy

c)

autogamy

d)

functionally cross but genetically self pollination

12.

albuminous seeds store their reserve food mainly in

a)

perisperm

b)

endosperm

c)

cotyledons

d)

hypocotyl

13.

a typical angiospermic anther is

a)

bilobed and dithecous

b)

uniboled and dithecous

c)

bilobed and tetratheocus

d)

unilobed and tetra thecous

14.

which of following causes asthma and bronchitis

a)

zostera

b)

hydilla

c)

parthenium

d)

amaranthour

15.

which of the following are the basis of agriculture

a)

plants

b)

seeds

c)

ovules

d)

anther

16.

sahiwal cow is made by

a)

natural selection and domestication

b)

artificial selelction and domestication

c)

cross breeding

d)

biotechnology

17.

law of independent assortment is related to

a)

inheritance of 1 gene

b)

linkage

c)

inheritance of 2 genes

d)

recombination

18.

what is a test cross

a)

cross of f2 plant with f1 tall plants

b)

self crossing of f1 plant

c)

self crosing of f2 plants

d)

cross of f2 plant with f1 dwarf plants

19.

example of incomplete dominance

a)

papaya

b)

blood group character

c)

snapdragon

d)

comb of chicken

20.

total number of genotypes and phenotypes respectively for abo blood group.

a)

4 and 6

b)

4 and 7

c)

6 and 4

d)

2 and 3

21.

starch synthesis in pea shows

a)

complete dominance

b)

co dominance

c)

multiple allelism

d)

pleiotropy

22.

who proposed chromosomal theory of inheritance

a)

morgan

b)

mendel

c)

de varies, corren and tesenmark

d)

sutton and boveri

23.

which of the following is used by morgan for experiment

a)

oenothera lamarkiana

b)

drosophila melanogester

c)

sweet pea

d)

garden pea

24.

who mapped the chromosomes

a)

alfred strutevant

b)

morgan

c)

one student of Morgan

d)

mandel

25.

which type of inheritance is shown by polygenic inheritance

a)

co dominance

b)

complete domince

c)

polygenic inheritance

d)

incomplete inheritance

26.

who discovered x chromosome

a)

alfred sturatvent

b)

morgan

c)

henking

d)

hugo de varies

27.

which type of sex determination occurs in birds and drosophila respectively

a)

xx xo and zz zw

b)

xx xy and zz zw

c)

zz zw and xx xy

d)

xx xy and xx xo

28.

which among the following shows autosomal recessive disease

a)

myotonic dystrophy

b)

sickle cell anemia

c)

colour blindness

d)

phenylketonuria

29.

what is the cause of sickle cell anemia

a)

mrna change from gug to gag

b)

change of 6th amino acid on beta chain from valine to glutamic acid

c)

change of 6th amino acid on alpha chain from valine to glutamic acid

d)

change of 6th amino acid on beta chain from glutamic acid to valine

30.

beta thallesemia is controlled by which chromosome

a)

x

b)

y

c)

16

d)

11

31.

45+xo represents

a)

down syndrome

b)

kleinfilter syndrome

c)

myotonic dystrophy

d)

turner syndrome

32.

phi 174 is a

a)

barteria

b)

phytophage virus

c)

zoophage virus

d)

bacteriophage virus

33.

double helix model is based on x ray diffraction which was produced by

a)

watson and crick

b)

watson and franklin

c)

franklin and wilkins

d)

crick and wilkins

34.

reverse transcription is present in

a)

human

b)

bacteria

c)

retrovirus

d)

birds

35.

histone is a

a)

dimer

b)

monomer

c)

octamer

d)

tetramer

36.

beads on string is called as

a)

chromatin

b)

chromosome

c)

nucleosome

d)

histone

37.

friedrick Griffith experiment on which organism and when

a)

staphylococcus in 1928

b)

stretococcus in 1928

c)

staphylococcus in 1902

d)

streptococcus in 1902

38.

r strain of bacteria is

a)

virulent

b)

non virulent

c)

smooth

d)

safe

39.

biochemical principal of tranforming principal is given by all except

a)

avery

b)

macleod

c)

hershey

d)

mccarty

40.

unequivocal proof that dna is a genetic material is given by

a)

avery amd macleod

b)

harshey and maccarty

c)

harshey and chase

d)

macleod and maccarty

41.

which of the following have rna as genetic material

a)

tmv

b)

qb bacteriophage

c)

hiv

d)

e coli

42.

RNA is suitable for

a)

storage of information

b)

transfer of information

c)

replication

d)

recombination

43.

eukaryotes have

a)

polycistronic rna

b)

bicistronic rna

c)

polycistronic dna

d)

mono cistronic dna

44.

which of following is coded by rna polymerase 2

a)

t rna

b)

m rna

c)

hn rna

d)

r rna

45.

total number of stop codons are

a)

2

b)

3

c)

4

d)

5

46.

which of the following is incorrect for genetic code

a)

it is non degenrate

b)

it is universal

c)

commaless

d)

it is in contiguous fashiom

47.

utr are used for

a)

transcription

b)

efficient translation

c)

modification of translated product

d)

post trancriptional modification

48.

lac operon is under

a)

positive regulation

b)

negstive regulation

c)

none

d)

both

49.

human genome preoject was compelted in

a)

2001

b)

2006

c)

1990

d)

2003

50.

VECTOR USED IN HGP

a)

retrovirus

b)

human

c)

bac and yac

d)

yeast

51.

if a colour blind man marries a women who is homozygous for normal colour vision, the probability of their son being colour blind is

a)

0

b)

0.5

c)

0.25

d)

0.75

52.

which of the following is incorrect

a)

haemophilia is sex linked recessive disorder

b)

down syndrome is due to aneuploidy

c)

phenylketonuria is autosomal recessive

d)

sickle cell anemia is x linked

53.

which of the following character is not used by mendel

a)

flower position

b)

seed colour

c)

seed shape

d)

pod length

54.

multiple alleles are present

a)

on non sister chromatids

b)

om different chromosomes

c)

at different loci on same chromosome

d)

at same locus of chromosome

55.

which mendalian idea is depicted by a cross in which f1 generation resembles both the parents

a)

law of dominance

b)

inheritance of 1 gene

c)

codominance

d)

incomplete dominance

56.

point mutation involves

a)

deletion

b)

insertion

c)

change in simgle base pair

d)

duplication

57.

if a colourblind woman marries a normal man, their sin would be

a)

all normal

b)

all carriers

c)

half carriers

d)

all affected

58.

which of followimg is not a hereditary disease

a)

cystic fibrosis

b)

thallesemia

c)

cretinism

d)

haemophilia

59.

number of barr body im xxxx females

a)

1

b)

2

c)

3

d)

4

60.

taylor conducted experiment to prove semiconservative nature on

a)

vinca rosea

b)

vinca faba

c)

drosophila

d)

e coli

61.

which of following is structural rna as well as ribozyme in bacteria

a)

5s rrna

b)

18 s rrna

c)

23 s r rna

d)

28 s r rna

62.

which of following is starter codon

a)

uag

b)

aug

c)

uga

d)

uaa

63.

lac y gene codes for

a)

permease

b)

transacetylase

c)

galactosidase

d)

lactase

64.

PCR and RFLP are the methods for

a)

dna sequencing

b)

genetic fingerprinting

c)

study of enzymes

d)

genetic transformation

65.

in history of biology, the HGP leads to development of

a)

biosystematics

b)

bioinformatics

c)

biotechnology

d)

biomonitoring

66.

crcl3 has primary valence of

a)

3

b)

4

c)

2

d)

1

67.

mohr salt is

a)

kcl. mgcl2. 6h2o

b)

feso4. (nh4) 2so4.6h20

c)

kal(so4) 2.12h20

d)

kcl

68.

which of following is didentate ligand

a)

edta

b)

en

c)

nitrito

d)

CN

69.

co(no2) 3(nh3)3 shows which isomeris.

a)

cis trans

b)

linkage

c)

solvate

d)

fac mer

70.

which of following ligands shows linkage isomers

a)

CN

b)

NO2

c)

NH3

d)

SO4

71.

imner orbital complex are also called as

a)

high spim complex

b)

spin free complex

c)

spin paired complex

d)

outer orbital complex

72.

shape of nicl4 2-

a)

square planar

b)

pyramidal

c)

tetrahedral

d)

octahedral

73.

which is not a limitation of vbt

a)

lot of assumptions

b)

give quantitative interpretation of magnetic data

c)

doesnt distimguish between weak and strong ligands

d)

doesnt explain colour

74.

which of tue following is strongest ligand

a)

en

b)

nh3

c)

cn-

d)

co

75.

which colour is exhibited by [Ti(h2o) 6]cl3 on heating

a)

pale blue

b)

violet

c)

colourless

d)

green

76.

oxidation stste of chromium in cr(co) 6

a)

0

b)

1

c)

2

d)

3

77.

which of the followimg is anti pernicious factor

a)

vitamin b6

b)

vitamin b1

c)

vitamin b12

d)

vitamin b3

78.

which of following is used in treatment of lead poisoning

a)

cis platin

b)

trans platim

c)

edta

d)

penicillamine

79.

how many ioms are produced from complex co(nh3) 6cl2 in solution

a)

6

b)

4

c)

3

d)

2

80.

whicj of folloiwng acts as depressent for seperating pbs and zns ore

a)

pine oil

b)

xanthates

c)

nacn

d)

fatty acids

81.

which is the purest form of iron

a)

pig iron

b)

cast-iron

c)

wrought iron

d)

scrap iron

82.

how copper is extracted from low grade copper ores

a)

electro metallurgy

b)

hydrometallurgy

c)

pyro metallurgy

d)

dustillation

83.

which of following method is used for production of ultra pure metals

a)

vapour phase refining

b)

zone refining

c)

cheomatography

d)

electrolytic refining

84.

von arkel method is used for

a)

nickel

b)

zirconium

c)

copper

d)

titanium

85.

aluminium is extracted from alumina by electrolysis of a molten mixture of

a)

al2o3+kf+na3alf6

b)

al2o3+hf+naalf4

c)

al2o3+na3alf6+caf2

d)

al2o3+caf2+naalf4

86.

which of the following is present as impurity to the maximum extent in pig irom

a)

phosphorus

b)

mangnese

c)

cabon

d)

silicon

87.

which of following sulphide when heated strongly in air gives corresponding metal

a)

cus

b)

fe2s3

c)

fes

d)

hgs

88.

the number of unpaired electron in (cof6) 3- .... atomic no. of co is 27

a)

2

b)

3

c)

4

d)

0

89.

which of following is paramagnetic

a)

cr(co) 6

b)

fe(co) 5

c)

fe(cn) 6 4-

d)

cr(nh3) 6 3+

90.

shape of fe(co) 5 is

a)

octahedral

b)

Square planar

c)

trigonal bipyramidal

d)

square pyramidal

91.

[Co(NH3) 4(NO2)2Cl2] echibits

a)

linkage isomer, ionization isomer, optical isomer

b)

linkage, ionization and geometrical isomer

c)

ionization, geometrical and optical isomer

d)

linkage, geometrical and optical isomer

92.

which does not show optical isomer

a)

co(nh3)3cl3

b)

co(en) cl2(nh3) 2] +

c)

co(en) 3]+

d)

co(en) 2cl2]+

93.

magnetic moment 2.84 is shown by

a)

co+2

b)

ni+2

c)

ti+3

d)

cr+2

94.

no. of possible isomers for the complex[co(en) 2cl2]cl

a)

3

b)

4

c)

2

d)

1

95.

the hybridisation of ni (cn) 4 2-

a)

d2sp2

b)

d2sp3

c)

dsp2

d)

sp3

96.

which reagent can be used to identify ni+2 ion

a)

resorcinol

b)

dimethylglyoxime

c)

diphenyl benzidine

d)

potassium ferrocynadie

97.

john teller effect is not observed in high spin complexes of

a)

d7

b)

d8

c)

d4

d)

d9

98.

charring of sugar is done by

a)

hno3

b)

hcl

c)

h3po4

d)

h2so4

99.

xef2 is isostructural with

a)

icl2 -

b)

sbcl3

c)

bacl2

d)

tef2

100.

which gas is called as silent killer

a)

co2

b)

so2

c)

hcl

d)

co

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