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ONLINE TEST 7 XII FULL BOOK

Total questions: 100

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

Which one of the following is an example of polygenic inheritance?

a)

Flower colour in Mirablis jalapa

b)

Production of male honey Bee

c)

Pod shape in garden pea

d)

Skin colour in humans

2.

The time duration for sterilization process by using autoclave is ..............minutes and the temperature is............

a)

10 to 30 minutes and 125 degree c

b)

15 to 30 minutes and 121 degree c

c)

15 to 20 minutes and 125 degree c

d)

10 to 20 minutes at 121 degrees c

3.

Deforestation means

a)

Growing plants and trees in an area where there is no forest

b)

Growing plants and trees in an area where the forest is removed

c)

Growing plants and trees in a pond

d)

Removal of plants and trees

4.

Niche means

a)

Physical space occupied by an organism

b)

The interaction of organisms with their environment

c)

A functional space occupied by an organism in the ecosystem

d)

Ecology of an individual species

5.

In an ecosystem which one shows one way passage?

a)

Carbon

b)

Oxygen

c)

Free energy

d)

Nitrogen

6.

Choose the correct statement from the following

a)

Anemophilous flowers are brightly coloured

b)

Entomophilous flowers are small in size

c)

Epihydrophilous flowers occur at the water level

d)

Hypohydrophilous flowers occur above the water level

7.

Due to incomplete linkage in the ratio of parental and recombinants are

a)

50 :50

b)

7:1:1:7

c)

96.4 :3.6

d)

1:7:7:1

8.

Western blotting is the technique for the detection of

a)

DNA in a sample

b)

RNA in a sample

c)

Protein in a sample

d)

Lipid in a sample

9.

The ABO blood group is due to

a)

Codominance

b)

Complete dominance

c)

Incomplete dominance

d)

Over dominance

10.

A plant called X possesses small flower with reduced perianth and versatile anther. The probable agent for pollination would be

a)

Water

b)

Air

c)

Butterflies

d)

Beetles

11.

Mutual exchange of genetic material between homlogous chromosomes takes place in in

a)

Translocation

b)

Crossing over

c)

Deletion

d)

Duplication

12.

The process of recombinant DNA technology has the following steps

1. Amplification of the gene

2. Insertion of the recombinant DNA into the host cells

3. Cutting of DNA at specific location using restriction enzyme

4. Isolation of genetic material (DNA)

a)

2,3,4,1

b)

4,3,1,2

c)

2,3,4,1

d)

1,2,3,4

13.

Which one of the following is not a sedimentary cycle?

a)

Nitrogen cycle

b)

Phosphorus cycle

c)

Sulphur cycle

d)

Calcium cycle

14.

According to world conservation Union which is the second significant threat to biodiversity?

a)

Habitat loss

b)

Alien invasive species

c)

Deforestation

d)

Afforestation

15.

Desired improved variety of economically useful crops are raised by

a)

Natural selection

b)

Hybridization

c)

Mutation

d)

Bio fertilizers

16.

Tectona grandis is coming under the family

a)

Lamiaceae

b)

Fabaceae

c)

Lauraceae

d)

Liliaceae

17.

Identify the correctly matched pair

a)

Tuber-- Allium cepa

b)

Sucker. - Pistia

c)

Rhizome - Musa

d)

Stolon - Zingiber

18.

Which of the following bacteria is considered as natural genetic engineer?

a)

Agrobacterium tumefaciens

b)

Agrobacterium radiobacter

c)

E.coli

d)

Thermus aquaticus

19.

Which of the following statement is correct?

a)

Agar is not extracted from marine algae such as seaweeds

b)

Callus undergoes differentiation and produces somatic embryoids

c)

Surface sterilization of explant is done by using mercuric bromide

d)

pH of the culture medium is 5 to 6

20.

The bacteria found in symbiotic association with plants for nitrogen fixation is

a)

Clostridium

b)

Haemophilous

c)

Bifidobacteria

d)

Rhizobium

21.

One of the main reasons among the following for the depletion in the number of species making endangered is

a)

Over hunting and pouching

b)

Green house effect

c)

Competition and predation

d)

Habitat destruction

22.

Groundnut is native of

a)

Philippines

b)

India

c)

North America

d)

Brazil

23.

Pure line breed

a)

Homozygosity

b)

Heterozygosity

c)

Offspiring

d)

Hybrids

24.

At what stage of prophase 1 is the intimate bearing between two homologous chromosomes initiated?

a)

Leptotene

b)

Diplotene

c)

Pachytene

d)

Zygotene

25.

Consider the following statementsand find incorrect one

a)

Recombinant DNA technology popularly known as genetic engineering

b)

pBR322 IS THE FIRST ARTIFICIAL CLONING VECTOR developed in 1977 by Boliver AND Rodriguez from E Coli plasmid

c)

Restriction enzymes belong to a class of enzymes called nucleases

d)

Management of biological information with the help of computer technology is called bio statistics

26.

The Latin word 'puls'means

a)

Thick oil

b)

Thick soup

c)

Thin oil

d)

Thin soup

27.

The epistatic effect in which the dihybrid cross 9 :3 : 3:1 between AaBb and AaBb is modified as

a)

Dominance of one allele and another allele of both loci

b)

Interaction between two alleles of different loci

c)

Dominance of one allele to another allele of same loci

d)

Interaction between two alleles of some loci

28.

Name the hormone that plays an important role in the suppression of stamens in Maize

a)

Auxins

b)

Abscisic acid

c)

Cytokinin

d)

Gibberellins

29.

Psy gene is obtained from the plant

a)

Narcissus pseudonarcissus

b)

Oryza sativa

c)

Bacillus megaterium

d)

Erwinia auredorora

30.

The prevention of large scale loss of biological integrity

a)

Biopatent

b)

Bioethics

c)

Biosafety

d)

Biofuel

31.

In the given food chain suppose the amount of energy level is 2J at the fourth trophic level what will be the energy available at the producer level


Grass ~grass copper~ frog ~snake~ hawk

a)

2J

b)

2J

c)

200 J

d)

2000 J

32.

Nutrient cycling between species is achieved through

a)

Social forestry

b)

Silvopasture

c)

Agroforestry

d)

Afforestration

33.

Find mismatch

a)

Wheat - Himgiri

b)

Mulch breed - Sahiwal

c)

Rice - Ratna

d)

Pisa Komal - Brassica

34.

Consider the following statements and choose the right option


1. Serials are members of grass family

2. Most of the food grains come from monocot

a)

1is correct and 2 is wrong

b)

Both are correct

c)

1 is wrong and 2 is correct

d)

Both are wrong

35.

Which of the following mechanism helps in salvia pollination

a)

Screw

b)

Pulley

c)

Wedge

d)

Lever

36.

Cryopreservation means it is a process to preserve plant cells tissues or organs

a)

At very low temperature by using ether

b)

At very high temperature by using liquid nitrogen

c)

At very low temperature of - 196 by using liquid nitrogen

d)

At very low temperature by using liquid nitrogen

37.

Type of ploidy seen

in Raphanobrassica

a)

Autopolyploidy

b)

Aneuploidy

c)

Allopolyploidy

d)

Hexaploidy

38.

Identify the formula that gives the relationship between NPP and GPP

a)

NPP= Respiration - GPP

b)

GPP = RESPIRATION - NPP

c)

NPP = GPP + Respiration

d)

NPP = GPP - Respiration

39.

Pusa swarnim a variety of Brassica is resistant to

a)

Hill bunt

b)

Curl blight

c)

Chilly mosaic

d)

White rust

40.

Assertion: Turmeric fights various kinds of cancer


Reason: Curcumin is an antioxidant present in turmeric

a)

A is correct ,R is wrong

b)

A is wrong R is correct

c)

Both are correct

d)

Both are wrong

41.

Genetic engineering is

a)

Making artificial genes

b)

Hybridization of DNA of one organism to that of the others

c)

Production of alcohol by using microorganisms

d)

Making artificial limbs diagnostic instruments such as ECG ,..etc

42.

Sticky glands of Boerhaavia and cleome support

a)

Anemochory

b)

Zoochory

c)

Autochory

d)

Hydrochory

43.

The character that is expressed in the F1 generation of monohybrid cross is

a)

Heterozygous recessive

b)

Homozygous recessive

c)

Heterozygous dominant

d)

Homozygous

dominant

44.

The study of fermentation and its practical uses is called

a)

Fermentology

b)

Mycolology

c)

Yeastology

d)

Zymology

45.

Arrange the correct sequence of ecological hierarchy starting from lower to higher level

a)

Individual organism+population +landscape+ ecosystem

b)

Landscape + ecosystem +biome + biosphere

c)

Community + ecosystem + landscape + biome

d)

Population +organism +biome + landscape

46.

Profundal zone is predominanted by heterotrophs in a pond ecosystem because of

a)

Effective light penetration

b)

No effective light penetration

c)

Complete options of light

d)

A and B

47.

One greenhouse gas contributes 14 % of total global warming and another contributes 6 %. These are respectively identified as

a)

N²O and Co2

b)

CFC and N²O

c)

CH⁴ and Co2

d)

CH⁴ and CFC

48.

The quickest method of plant breeding is

a)

Introduction

b)

Selection

c)

Hybridization

d)

Mutation breeding

49.

The plant source of codeine is

a)

Digitalis purpurea

b)

Papaver sominiferum

c)

Capscicum annuam

d)

Cathars this roseus

50.

Plants growing in rocky crevices

a)

Psammophytes

b)

Lithophytes

c)

Chasmophytes

d)

Cryptophytes

51.

Gametes are never hybrid this is a statement of

a)

Law of dominance

b)

Law of independent assortment

c)

Law of segregation

d)

Law of random fertilization

52.

If the recombination frequency value is more than 50 % the two genes are

a)

Linked

b)

Unlinked

c)

Identical

d)

Non identical

53.

Find mismatch

a)

Totipotency - Properties of living cells develop into entire plant

b)

Redifferentiation- reversion of mature cells into meristem

c)

Explant - selected plant tissue transfered to culture medium

d)

Differentiation biochemical and structural changes of cells

54.

The biomass available for consumption by the herbivores and decomposers is called

a)

GPP

b)

NPP

c)

Secondary productivity

d)

Standing crop

55.

Sonara 64 wheat variety was introduced from

a)

Morocco

b)

Brazil

c)

Mexico

d)

Philippines

56.

Pyrophilous is the term associated to

a)

Plants that grow in soil of burnt areas

b)

Fungi that grow in soil with high PH

c)

Fungi that grow in soil of burnt areas

d)

Plants that grow in soil with low PH

57.

Agarrose gel electrophoresis separates DNA molecule of size

a)

10 - 20bp

b)

20 - 30 bp

c)

100 - 10000bp

d)

100 - 20000bp

58.

In Ophrys the flower looks like a female insect to attract the male insect for pollination. This phenomenon is called

a)

Myrmecophily

b)

Protective mimicry

c)

Floral mimicry

d)

Co evolution

59.

Find mismatch

a)

Endemism - Species confined to a region and not found anywhere else

b)

Hotspots - Western Ghats

c)

Ex - situ conservation -. Zoological parks

d)

Sacred groves - Saintri hills of Rajastan

60.

The only cereal that was originator and domestic atta from the new world

a)

Oryza sativa

b)

Triticum aestivum

c)

Triticum duram

d)

Zea mays

61.

Which one of the following is not a macro nutrition of MS medium?

a)

Zinc sulphate

b)

Ammonium nitrate

c)

Potassium nitrate

d)

Calcium chloride

62.

In a freshwater environment like pond rooted autotrophs are

a)

Nymphaea and Typha

b)

Ceratophyllum and Utricularia

c)

Wolffia and Pistia

d)

Azolla and Lemna

63.

The primary productivity of littoral and limnetic zone is more due to

a)

Lesser penetration of light

b)

Optimum penetration of light

c)

No penetration of light

d)

Greater penetration of light

64.

Deforestation does not lead to

a)

Quick nutrient cycling

b)

Soil erosion

c)

Alternation of local weather conditions

d)

Destruction of natural habitat, weather conditions

65.

Crosses between the plants of the same variety are called

a)

Inter specific

b)

Inter varietal

c)

Intra varietal

d)

Inter generic

66.

Which one is first semi dwarf rice variety?

a)

Taichung native 1

b)

Ratna

c)

Sonara

d)

Himgiri

67.

Which of the following is responsible for the yellow colour of turmeric?

a)

Capsacin

b)

Curcumin

c)

Opium

d)

Aloin

68.

The primary sporogenous cells directly or may undergo few mitotic divisions to form

a)

Tapetum

b)

Sporogenous tissue

c)

Pollinium

d)

Connective tissue

69.

Hilum represents the junction between

a)

Ovule and ovary

b)

Ovary and funicle

c)

Funicle and Raphe

d)

Ovule and funicle

70.

Tristyly seen in

a)

Hibiscus

b)

Primula

c)

Lythrum

d)

Passiflora

71.

USPTO expanded as

a)

United States of Portugal trade mark office

b)

United States patent and trademark office

c)

United States patent and transport organisation

d)

United States public trademark organisation

72.

The active principle of Nilavembu

a)

Vascin

b)

Phyllanthin

c)

Curcumin

d)

Andrographolides

73.

Find mismatch

a)

Coir - Arecaceae

b)

Corchorus - Malvaceae

c)

Dalbergia. - Fabaceae

d)

Lawsonia. - Lauraceae

74.

The world's number 1 banana producer

a)

Asia

b)

India

c)

Tamilnadu

d)

Madurai

75.

Svalbard seed bank,the storage rooms are kept at

a)

18 degree Celsius

b)

-16 degree Celsius

c)

-18 degree Celsius

d)

-176 degree Celsius

76.

Parbharani kranti is a variety of

a)

Pumpkin

b)

Ladies finger

c)

Chilly

d)

Cotton

77.

Pseudo heterosis is otherwise called as

a)

Mutational heterosis

b)

Balance heterosis

c)

Ordinary heterosis

d)

Luxuriance

78.

Choudhury Ram Shan is famous for

a)

C 592 variety of raice

b)

C 591 Variety of wheat

c)

C 593 variety of wheat

d)

C 563 variety of cotton

79.

The 💯 th satellite CARTOSAT 2 is used to

a)

Cyclone prediction

b)

Disaster management

c)

Earth observation

d)

Watch border surveillance

80.

Biochar is another long term method to store

a)

Carbon dioxide

b)

Carbon monoxide

c)

Carbonic acid

d)

Carbon

81.

The habit of endemic plant Agasthyamalaia pauciflora

a)

Herb

b)

Shrub

c)

Tree

d)

Liana

82.

Indicator for fluoride pollution

a)

Petunia

b)

Lichen

c)

Gladiolus

d)

Robinia

83.

Littoral and swamp forests include

a)

Beach forest

b)

Tidal forest

c)

Mangrove forest

d)

All the above

84.

the successful establishment of species as a result of reproduction and increase in population of the species then the early stage is called

a)

Ecesis

b)

Competition

c)

Reaction

d)

Aggregation

85.

The running and standing water bodies are called

a)

Natural and manmade

b)

Maynard and natural

c)

Lotic and lentic

d)

Lentic and lotic

86.

Odd one out

a)

Hekistotherms - less than 70 degree Celsius

b)

Megatherms - more than 240 degree Celsius

c)

Mesotherms - ranges between 170 to 240 degree Celsius

d)

Microthermes - 0 degree to 270 degree Celsius

87.

The following one is not an anatomical adaptation of Xerophytes?

a)

Multilayered epidermis

b)

Well developed hypodermis with sclerenchymatous tissue

c)

Sunken stomata in upper epidermis

d)

Scotoactive type of stomata are found in succulent plants

88.

In HORIZON , where poor in humus and rich in minerals

a)

A

b)

B

c)

C

d)

R

89.

the term/s related to Stenobathic

a)

Eurybathic

b)

Depth of water

c)

The part of habitat

d)

All the above

90.

Find mismatch

a)

Definition of Ecology - Ernest

b)

Father of Ecology - Humbolt

c)

Father of modern Ecology - Eugene

d)

Father of Indian Ecology - Dubey

91.

Which of the following is secondary metabolite used for rheumatic pain treatment

a)

Digoxin

b)

Capsaicin

c)

Vincristine

d)

Codeine

92.

In plant tissue culture ,the amount of pressure in autoclave?

a)

12psi

b)

15psi

c)

21psi

d)

18psi

93.

Who produced test tube fertilization in flowering plants

a)

Morel

b)

Takebe

c)

Chilton

d)

Kanta

94.

The process of Discovery and commercialisation of new product obtained from biological resources are called

a)

Bioprospecting

b)

Biopiracy

c)

Bioleeching

d)

Bioaugmentation

95.

The following gene is not present in golden rice

a)

lee

b)

psy

c)

crt 1

d)

lyc

96.

Which of the following is used to induce DNA uptake into plant protoplast

a)

PEG

b)

Dextran sulphate

c)

Both of these

d)

None of these

97.

A segment of DNA that is both transcribed into RNA and translated into protein

a)

Intron

b)

Exon

c)

Muton

d)

Recon

98.

A double stranded molecule of nucleic acid originated through genetic recombination from different sources are called

a)

Homoduplex

b)

Heterodublex

c)

Vestigial

d)

Branch migration

99.

The number of chromosomes in Giant sequoia

a)

10

b)

22

c)

24

d)

16

100.

The phenotypic ratio of Mendel's trihybrid cross

a)

27:27:27:9:9::3:3:1

b)

27:9:9:3:3:3:1:1

c)

9:9:9:3:3;3:1:1

d)

27:9:9:9:3:3:3:1

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