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19001.

Question : Contraction in suspensory ligaments represents:-

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OBJECT situated NEAR by
Object situated at a distance
No change in LENS diameter
Object may be near or at a distance

Answer :B
19002.

Question : Contractile protein of skeletal muscle involving ATPase activity is :-

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Troponin
Tropomyosin
Myosin
`ALPHA` -actinin

Answer :C
19003.

Question : Contractile vacuole in Amoeba helps in

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Osmoregulation
Excretion
Digestion
Both (1) & (2)

ANSWER :D
19004.

Question : Contraceptive method with least average failure rate among the following is

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Rhythm METHOD
Coitus interruptus
ORAL contraceptives
Implanted contraceptives

Solution :Hormone containing devices
Average failure rate of NATURAL method (rhythm), coitus interruptus, oral contraceptives and implanted contraceptives are 20-30% , 23%, 2-3% and less than one PERCENT RESPECTIVELY.
19005.

Question : Contractile protein is

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ACTIN
MYOSIN
tropnin
tropomyosin

ANSWER :A
19006.

Question : Contraceptive pills help in birth control by :

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KILLING the sperms
Forming BARRIER between SPERM and ovum
By PREVENTING OVULATION
Killing the ovum

Answer :C
19007.

Question : Contractile protein is -

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ACTIN
MYOSIN
TROPONIN
Tropomyosin

Answer :A
19008.

Question : Continuous variations are attributed to meiosis through :

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Polyploidy
Mutations
Chromosomal aberrations
Crossing over

Answer :D
19009.

Question : Continuous variations are seen in_____characters.

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ANSWER :MUTATION
19010.

Question : Continuous self pollination results in inbreeding depression . Flowering plants have developed many devices to discourage self pollination and to enocourage cross pollination . Explain any four such mechanisms .

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Solution :(i) EITHER POLLEN or stigma matures first .
(ii) Anther and stigma are placed at DIFFERENT positions.
Self incompatibility
(IV) Production of monoecious and dioecious condition
19011.

Question :Continuous self - pollination of a species develops

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STRONG offsprings
Weak offsprings
SEEDLESS FRUITS
fruits with MANY seeds

Answer :B
19012.

Question : Continuous growth of plants throughout their life is due to

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Mitotic DIVISION in the apical meristem and the LATERAL cambium
Mitotic division in PRIMARY permanent tissues
PRODUCTION of seeds
Photosynthetically ACTIVE cells only

Answer :A
19013.

Question : Continuous addition of sugars in 'fed batch' fermentation is done to:

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PRODUCE methane
Obtain antibiotics
Purify enzymes
Degrade sewage

Answer :B
19014.

Question : 'Continuity of germplasm' theory was given by

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HUGO DE Vries
Weismann
Darwin
None of these

Answer :B
19015.

Question : Continuous addition of sugars in 'fed batch' fermentation is done to

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PRODUCE methane
Obtain antibiotics
PURIFY ENZYMES
DEGRADE sewage

Solution :Purify enzymes
19016.

Question : Continuity of protoplasm between cells is maintained by_____

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ANSWER :PLASMODESMATA
19017.

Question : Continuous addition of sugars in fed batch fermentation is done to(A) Produce methane(B) Obtain antibiotics(C) Purify enzymes(D) Degrade sewage

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PRODUCE methane
Obtain antibiotics
PURIFY ENZYMES
DEGRADE sewage

Solution :Purify enzymes
19018.

Question : Continued self-pollination results in inbreeding depression. Plants have developed strategies to prevent both autogamy and geitonogamy. Write briefly about the strategies in plants which help in doing so

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Solution :SELF incompatibility, GENETIC mechanism, prevents self-pollen from fertilising the OVULES, by inhibiting pollen germination or pollen tube growth in the pistil, Dioecy, male and female flowers are present on different plants of the same species
19019.

Question : Continued self pollination lead to inbreeding depression. List three devices, which flowering plant have developed to discourages self pollination ?

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Solution :(a) Release of POLLEN and stigma RECEPTIVITY is not synchronise in some species
(b) ANTHER and stigma are at different position/heights in some plants
( c ) Self - Incompatibility (a GENETIC MECHANISM).
19020.

Question : Continued inbreeding usually reduces fertility and causes non productivity. This is called:

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SOLUTION :INBREEDING DEPRESSION
19021.

Question : Continued inbreeding usually reduces fertility and causes non productiity . This is called

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ANSWER :INBREEDING DEPRESSION
19022.

Question : Continued inbreeding reduces_____ and ______.

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SOLUTION :FERTILITY,PRODUCTIVITY
19023.

Question : Continued inbreeding produces stronger individuals

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Solution :False,CORRECT statement:CONTINUED inbreeding reduces FERTILITY and PRODUCTIVITY.
19024.

Question : Continents arebelieved to be circling the globe at the rate of

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`6km//yr`
`600 m//yr`
`6 cm//yr`
`0.6 cm//yr`

SOLUTION :N//A
19025.

Question : Continuation of recessive harmful genes in a population is termed

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Gene flow
Sewall wright effect
Genetic LOAD
Bottleneck effect

Answer :C
19026.

Question : Contact exchange of ions occurs

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between ROOT and SOIL particles
root and soil solution
cell and EXTERNAL solution
all of the above

Answer :A
19027.

Question : contagium vivum fluidum' was proposed by

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DJ Ivanowsky
MSW Beijerinck
Stanley
Robert Hook

Answer :B
19028.

Question : Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin 'A' deficiency ?

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Canolla
Golden rice
Bt-Brinjal
Flava SAVR' tomato

Answer :B
19029.

Question : Consumption of which one of the following foods can prevent the blindness associated with Vitamin-A deficiency ?

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FlavrSavr TOMATO
Canolla
Golden RICE
BT BRINJAL

Solution :Golden rice
19030.

Question : Consumption of drug and alcohol affects the persons mental and physical health very badly. List the warning signs of alchohol or drug abuse.

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Solution :DROP in academic performance/Lack of INTEREST in personal hygiene/Absent from schools/isolation/Withdrawl symptoms/Depression/Fatigue/Aggressive and rebellious behaciour/ Loss of interest in hobbies/Change in sleep and EATING habit/Fluctuation in WEIGHT and loss of appetite.
19031.

Question : Consumers are also known as

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reducers
transducers
consumers
producers

Answer :A
19032.

Question : How to make orally active protein pharmaceutical. What is the major problem to be encountered ?

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Solution :Digestive ENZYMES are taken into CONSIDERATION while making nutrient MATERIAL can be taken orally. Most of the antibiotics and vitamins are covered by CAPSULES. While peanut shell is used for protein so it can be absorbed by digestive system.
19033.

Question : Consult internet and find out how to make orally active protein pharmaceutical. What is the major problem to be encountered?

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Solution :The problem is STOMACH enzymes and ACIDS. Once youorally INGEST a protein, the proteases in your stomach juices (TRYPSIN,chymotrypsin, PEPSIN) will cleave the holy - hell out of your therapeutic protein and the acids will denature whatever.s left beyond all recoginition. This is why proteins like insulin have to be injected.
19034.

Question : Construct the food chain with the following data. Hawk, plants, frog, snake, grasshopper.

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Solution :Plants `RARR` GRASSHOPPER `rarr` Frog `rarr` SNAKE `rarr` HAWK
19035.

Question :Construct an ideal pyramid of energy when 1,000,000 joules of sunlight is available. Label all its tropic levels.

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SOLUTION :
19036.

Question : Construct an ecological pyramid indicating the number of organisms at each trophic level with the following organisms.Snake, Frog,Grass, Peacock, GrasshopperHow this pyramiddiffers from that of a large tree acting as an ecosystem ?

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Solution :
Here the pyramid is upright TYPE. In the CASE of large tree the pyramid will be INVERTED type when NUMBER of organisms are CONSIDERED.
19037.

Question : Considering the genetic basis of self incompatibility which of the following option is correct, Male plant is S_(1)S_(3) and female plant is S_(1)S_(2)

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ANSWER :D
19038.

Question : Considering the lac operon of E.coli, name the products of the following genes, a) i gene(b)lac Z gene ( c ) lac Y gene (d)lac a gene

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SOLUTION :(a)i GENE-repressor PROTEIN
(b) lac Z gene - `beta`- galactosidase
( c ) Lac Y gene - Pemmease
(d) lac a gene - TRANSACETYLASE
19039.

Question :Consider these structures :- Squamous endothelium, smooth muscles, elastic fibres, fibrous connective tissue, collagen fibres How many of the above are found in an artery ?

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only THREE
only FOUR
only TWO
All FIVE

ANSWER :D
19040.

Question : consider the statements given below regarding contraception answer as directed thereafter. (a) medical termination of pregnancy (MTP) during first trimester is generally save, (b) generally chances of conception are Nil until mother breast-feeds the infant up to 2 years. (c) intrauterine devices like copper-T are effective contraceptives. (d) Contraceptive pills may be taken up to 1 week after coitus to prevent conception. which two of the above statements are correct?

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(a),(C)
(a),(B)
(b),(c)
(c),(d)

ANSWER :A
19041.

Question : Consider the statements given below regarding contraception and answer as directed there after : Medical termination of pregnancy (MTP) during first trimester is generally safe. Generally chances of conception are nil until mother breast -feeds the infant upto two years. Intrauterine devices like copper-T are effective contraceptives. Contraceptive pills may be taken upto one week after coitus to prevent conception. Which two of the above statements are correct ?

Answer»


ANSWER :A
19042.

Question : Consider the parts labelled in 1 and 2 respectively in the following diagram of lac Operon and find out the correct sequences:

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1-Repressor, 2-Repressor MRNA
1-Repressor mRNA, 2-Repressor
1-Repressor TRNA, 2-Repressor
1-Repressor RRNA, 2-Repressor

Answer :B
19043.

Question : Consider the parts labelled in 1,2,3 and 4 respectively in the following diagram of Nucleosome and find out the correct sequences:

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1-DNA,2-H2 HISTONE, 3-Histone OCTAMER, 4- CORE of histone molecules
1-DNA,2-H3 histone, 3-Histone octamer, 4- core of histone molecules
1-DNA,2-H4 histone, 3-Histone octamer, 4- core of histone molecules
1-DNA,2-H1 histone, 3-Histone octamer, 4- core of histone molecules

Answer :D
19044.

Question : Consider the parts labelled in 1, 2, 3 and 4 respectively in the following diagrammatic representation of recombinant DNA technology and find out the correct sequences :

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1 - Foreign DNA, 2 Vector DNA, 3 Lyases JOIN foreign DNA to plasmid, 4 - Transformation, 5 - Cells divide
1 - Foreign DNA, 2 -Vector DNA, 3 LIGASES join foreign RNA to plasmid, 4 - Transformation, 5- Cells divide
1 - Foreign DNA, 2 Vector DNA, 3.Ligases join foreign DNA to plasmid, 4 - Transformation, 5- Cells divide
1 - Foreign DNA, 2 Vector DNA, 3 Ligases join foreign DNA to plasmid, 4 - Translation, 5 - Cells divide

Answer :C
19045.

Question : Consider the parts labelled in 1, 2, 3 and 4 respectively in the following diagram of Polymerase chain reaction (PCR) and find out the correct sequence :

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1 - Primers, 2 - DNA Polymerase, 3 - 10 CYCLE, 4 - Amplified
1 - Primers, 2 - DNA Polymerase, 3 - 20 cycle, 4 - Amplified
1 - Primers, 2 - RNA Polymerase, 3 - 30 cycle, 4 - Amplified
1 - Primers, 2 - DNA Polymerase, 3 - 30 cycle, 4 - Amplified

Answer :C
19046.

Question : (Consider the parts labelled 1, 2, 3 and 4 respectively representing global biodiversity of invertebrates in the following diagram and find out the correct sequence :)

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(A) 1 -Insects , 2 - Molluscus , 3-Beetles , 4 - Other animal groups
(B) 1 -Sponges , 2 - MOLLUSCS , 3 - Crustaceans, 4 - Other animal GROUP
(C) 1 - Insects , 2 - ECHINODERMATA, 3 - Crustaceans , 4 - Other animal group
(D)1 - Insects , 2 - Molluscs, 3-Crustaceans , 4 - Other animal group

Answer :D
19047.

Question : Consider the parts labelled in 1, 2, 3 and 4 respectively in the following diagram and find out the correct sequences

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1-COD, 2- BOD,3-Sewage discharge, 4- Direction of flow
1-BOD,2-Dissolved OXYGEN, 3- Sewage discharge, 4- Direction of fow
1-Disolved oxygen, 2- BOD, 3- fresh WATER discharge, 4- Direction of flow
1-Disolved oxygen, 2-BOD, 3-Sewage discharge, 4- Direction of flow

Answer :D
19048.

Question : (Consider the parts labelled 1, 2, 3 and 4, 5 respectively representing global biodiversity of vertebrates in the following diagram and find out the correct sequence :)

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(A) 1 - Urochordata, 2 - Birds, 3- Reptiles, 4 - Amphibians, 5 - FISHES
(B) 1 - MAMMALS, 2 - Birds, 3- Reptiles, 4 - Amphibians, 5 - Fishes
(C) 1 - Mammals, 2 - Cephalochordate, 3- Reptiles, 4 - Amphibians, 5 - Fishes
(D) 1 - Mammals, 2 - Fishes, 3- Reptiles, 4 - Amphibians, 5 - Birds

Answer :C
19049.

Question : (Consider the parts labelled 1, 2, 3 and 4, 5 respectivelyin the following diagram and find out the correct sequence :)

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(A) 1 - S= C AZ, 2 - log Z = log C + Z log A, 3- log - log SCALE, 4 - Area, 5 - SPECIES richness
(B) 1 - S= C AZ, 2 - log S = log C + Z log B, 3- log - log scale, 4 - Area, 5 - Species richness,
(C) 1 - S= C AZ, 2 - log S = log C + Z log A, 3- log - log scale, 4 - Area, 5 - Species richness,
(D) 1 - S= C AZ, 2 - log S = log C + Z log A, 3- log - log scale, 4 - Area, 5 - Species richness,

Answer :D
19050.

Question : (Consider the parts labelled 1, 2, 3 and 4, 5, 6 respectively representing global biodiversity of plants in the following diagram and find out the correct sequence :)

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(A) 1 - Ferns and allies, 2 - Gymnosperms, 3- Lichens, 4 - Alage, 5 - Fungi, 6 - MOSSES
(B) 1 - Ferns and allies, 2 - Angiosperms, 3- Lichens, 4 - Alage, 5 - Fungi, 6 - Liverworts
(C) 1 -Ferns and allies , 2 -Angiosperms, 3- Lichens, 4 - Alage, 5 - Fungi, 6 - Mosses
(D) 1 - Ferns and allies, 2 -Angiosperms, 3- Blue GREEN alage, 4 - Alage, 5 - Fungi, 6 - Mosses

Answer :C