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1101.

Function of thyrocalcitonin :A. To reduce the calcium level in bloodB. To increase the calcium level in bloodC. Oppose the action of thyroxineD. Maturation of gonads

Answer» Correct Answer - A
1102.

Role of microtubules :A. To help in cell divisionB. Cell membrane formationC. RespirationD. Pinocytosis

Answer» Correct Answer - A
1103.

Difference between eukaryotes and prokaryotes:A. ss circular DNA in prokaryotesB. Histone with prokaryotic DNAC. Operon in eukaryotesD. Membrane bound organelles in eukaryotes

Answer» Correct Answer - D
1104.

According to five kingdom system blue green algae belongs to :A. MetaphytaB. MoneraC. ProtistaD. Algae

Answer» Correct Answer - B
1105.

Bacteria are essential in carbon cycle as:-A. DecomposerB. SynthesizerC. ConsumerD. Pri. Producer

Answer» Correct Answer - A
1106.

Mental retardness in man occur due to :A. Loss of one X chromosomeB. Addition of one X chromosomeC. Slight growth in YD. Overgrowth in Y

Answer» Correct Answer - B
1107.

What occurs in crossing over :A. RecombinationB. MutationC. Independent assortmentD. None

Answer» Correct Answer - A
1108.

Histamine is secreted byA. Mast cellsB. FibroblastC. HistiocytesD. Plasma cells

Answer» Correct Answer - A
1109.

Which of the following survives a temperature of 104 to `106^(@)C` :A. Marine ArchabacteriaB. Hot water spring thermophilesC. Seeds of angiospermsD. Eubacteria

Answer» Correct Answer - B
1110.

Arterial blood pressure in human beings :A. 120 and 80 mm HgB. 150 and 100 mm HgC. 50 and 100 mm HgD. None

Answer» Correct Answer - A
1111.

In gymnosperms the pollen chamber representsA. The microsporangium in which pollen grains developB. A cell in the pollen grain in which the sperms are formedC. A cavity in the ovule in which pollen grains are stored after pollinationD. An opening in the megagametophyte through which the pollen tube approaches the egg

Answer» Correct Answer - C
1112.

Flagellated male gametes are present in all the three of which one of the following setsA. Riccia, Dryopteris and CycasB. Anthoceros, Funaria and SpirogyraC. Zygnema, Saprolegnia and HydrillaD. Fucus, Marsilea and Calotropis

Answer» Correct Answer - A
1113.

MSH is secreted byA. Anteria lobe of pituitaryB. Middle lobe of pituitaryC. Posteria lobe of pituitaryD. Endosytle

Answer» Correct Answer - B
1114.

Melation is secreted by:A. Pineal bodyB. SkinC. Pituitary GlandD. Thyroid

Answer» Correct Answer - A
1115.

Bone related to skull isA. CoracoidB. ArytenoidC. PterygoidD. Atlas

Answer» Correct Answer - C
1116.

Maximum growth rate occur inA. Senescent phaseB. Lag phaseC. Exponential phaseD. Stationary phase

Answer» Correct Answer - C
1117.

Life span of worker honey beeA. 30 daysB. 15 daysC. 90 daysD. 10 days

Answer» Correct Answer - C
1118.

Gene composed ofA. Amino acidsB. PolynucleotideC. Fatty acidD. Nitrogen bases

Answer» Correct Answer - B
1119.

The Bhopal Gas Tragedy is related withA. MethaneB. Carban mono oxideC. Methyl Iso cyanate (MIC)D. `SO_2`

Answer» Correct Answer - C
1120.

Ornithophilly takes place in :A. Yellow flower having nectariesB. Scented flowerC. Flower with charming colourD. Modified corolla tube

Answer» Correct Answer - A
1121.

Para thormone deficiency leads toA. Decrease of `Ca^(+2)` level in bloodB. Increase of `Ca^(+2)` level in bloodC. OsteoporosisD. Hypercalemia

Answer» Correct Answer - A
1122.

Which of the following are homologous organs :-A. Wings of birds & LocustB. Wings of birds (Sparrow) & Pectoral fins of fishC. Wings of bat & ButterflyD. Legs of frog & Cockroch

Answer» Correct Answer - B
1123.

There is no life on moon due to the absence of :A. `O_2`B. WaterC. LightD. Temperature

Answer» Correct Answer - B
1124.

Genetic drift operates in `:`A. Small isolated populationB. Large isolated populationC. Fast reproductive populationD. Slow reproductive population

Answer» Correct Answer - A
1125.

When a cluster of genes shows linkage behaviour theyA. Do not show a chromosome mapB. Show recombination during meiosisC. Do not show independent assortmentD. Induce cell division

Answer» Correct Answer - C
1126.

In human females, meiosis-II is not completed untilA. BirthB. PubertyC. FertilizationD. uterine implantation

Answer» Correct Answer - C
In human female meiosis-II completed after fertilization.
1127.

Which of the following layers in an antral follicle is acellular?A. Zona pellucidaB. GranulosaC. Theca internaD. Stroma

Answer» Correct Answer - A
zona pellucida=Acellular layer between follicular cell and oocyte.
1128.

In his classic experiment on Pea plants, Mendel did not useA. Flower positionB. Seed colourC. Pd lengthD. Seed shape

Answer» Correct Answer - C
Pod length.
1129.

Which one of the following fruits is parthenocarpicA. BananaB. BrinjalC. AppleD. Jackfruit

Answer» Correct Answer - A
Parthenocarpy: formation of fruit without fertilization e.g. Banana.
1130.

In angiosperm , microsporogenesis and megasporogenesis :A. occur in ovuleB. occur in anotherC. form gametes without further dividionsD. involve meiosis

Answer» Correct Answer - D
Microspore and megaspore are formed by meiosis.
1131.

Which of the following combinations should be selected for better turning of an LCR circuit used for communication ?A. R=20`Omega`,L1.5H, C=35`muF`B. `R=25Omega,L=2.5H,C=45muF`C. `R=15Omega,L=3.5H,C=30muF`D. `R=25Omega,L=1.5H,C=45muF`

Answer» Correct Answer - C
For better tuning quality factor should be high
`Q=(1)/(R)sqrt((L)/(C))`
for `Q_("max")`, R should be least
`therefore` Best answer is
`R=15Omega,L=3.5H,C=30muF`
1132.

An electron is moving in a circular path under the influence fo a transerve magnetic field of `3.57xx10^(-2)T`. If the value of `e//m` is `1.76xx10^(141) C//kg`. The frequency of revolution of the electron isA. 1 GHzB. 100 MHzC. 62.8 MHzD. 6.28 MHz

Answer» Correct Answer - A
`f=(qB)/(2pim)`
`=((q)/(m))*(B)/(2pi)`
`=(1.76xx10^(11)xx3.56xx10^(-2))/(2xx3.14)`
`1xx10^(9)Hz`
`=1GHz`
1133.

General behaviour of `O_3` isA. Gives electronsB. Gives `O_2`C. Reaction with `H_2`D. Accept electrons

Answer» Correct Answer - B
1134.

How many ATP will be formed by oxidation of 1 mole glucoseA. 36B. 40C. 24D. 32

Answer» Correct Answer - A
1135.

The radius of cirlcue, the period of revolution, initial position and sense of revolution are indicated in the figure. y-projection of the radius vector of rotating particle P is :A. `y(t)=3cos ((pit)/(2))`, where y in mB. `y(t)=-3 cos 2pit`, where y in mC. `y(t)=4sin((pit)/(2))`, where y in mD. `y(t)=3cos ((3pit)/(2))`, where y in m

Answer» Correct Answer - A
`T=(2pi)/(omega)=4, omega=(pi)/(2)`
y co-ordinate starts from maximum
So `y=A cos (omegat)`
`Y=3cos((pi)/(2)t)`
1136.

400 ml gas at 500 torr and 666.6 ml gas at 600 torr taken in a container of 3 litre then the total pressure of mixtureA. 200 torrB. 400 torrC. 600 torrD. 50 torr

Answer» Correct Answer - A
1137.

Two identical balls `A and B` having velocity of `0.5 m//s and -0.3 m//s` respectively collide elastically in one dimension. The velocities of `B and A` after the collision respectively will beA. `-0.3 ms^(-1) & 0.5ms^(-1)`B. `+0.5 ms^(-1) & +0.3ms^(-1)`C. `-0.4 ms^(-1) & 0.3ms^(-1)`D. `0.3 ms^(-1) & -0.4ms^(-1)`

Answer» Correct Answer - A
In elastic collision of bodies of same mass, the velocities get mutually exchanged between them.
1138.

Work function of a metal surface is `phi=1.5eV`. If a light of wavelength 5000Å falls on it then the maximum K.E. of ejected electron will be-A. 1.2 eVB. 0.98 eVC. 0.45 eVD. 0 eV

Answer» Correct Answer - B
`K.E_(max)=(hc)/lamda-phi`
=(12400eVÅ)/(5000Å)-1.5eV
=(2.48-1.5)eV=0.98 eV
1139.

The stability of `+1` oxidation state increases in the sequence :A. `Ga lt In lt Al lt Tl `B. `Al lt Ga lt In lt Tl `C. `Tl lt In lt Ga lt Al `D. `In lt Tl lt Ga lt Al `

Answer» Correct Answer - B
`+I` stability down the group increase due to inert pair effect `Al lt Ga lt In lt Tl `
1140.

Importance of day length in flowering of plants was first shown inA. CottonB. PetuniaC. LemnaD. Tobacco

Answer» Correct Answer - D
1141.

Which among the following is not a prokaryote?A. NostocB. MycobacteriumC. SaccharomycesD. Oscillatoria

Answer» Correct Answer - C
Saccharomyces i.e. yeast is an eukaryote (unicellular fungi)
Mycobacterium – a bacterium
Oscillatoria and Nostoc are cyanobacteria.
1142.

The Golgi complex participates inA. Respiration in bacteriaB. Respiration in bacteriaC. Fatty acid breakdownD. Activation of amino acid

Answer» Correct Answer - B
Golgi complex, after processing releases secretory vesicles from their trans-face.
1143.

Ionic radii areA. Inversely proportional to square of effective nuclear chargeB. Directly proportional to effective nuclear chargeC. Directly proportional to square of effective nuclear chargeD. Inversely proportional to effective nuclear charge

Answer» Correct Answer - D
1144.

`CN^(-)` is a strong field ligand. This is due to the fact thatA. It is a pseudohalideB. It can accept electrons from metal speciesC. It forms high spin complexes with metal speciesD. It carries negative charge

Answer» Correct Answer - D
1145.

ELISA is used to detect viruses where the key reagent is:A. Alkaline phosphataseB. CatalaseC. DNA probeD. RNase

Answer» Correct Answer - A
1146.

Parthenocarpic tomato fruits can be produced byA. Removing androecium of flowers before pollen grains are releasedB. Treating the plants with low concentrations of gibberellic acid and auxinsC. Raising the plants from vernalized seedsD. Treating the plants with phenylmercuric acetate

Answer» Correct Answer - B
1147.

Seed dormancy is due to the : -A. EthyleneB. Abscissic acidC. IAAD. Starch

Answer» Correct Answer - B
1148.

Which of the following absorb light energy for photosynthesis : -A. ChlorophyllB. Water moleculeC. `O_2`D. RUBP

Answer» Correct Answer - A
1149.

Species are considered asA. Real basic units of classificationB. The lowest units of classificationC. Artificial concept of human mind which cannot be defined in absolute termsD. Real units of classification devised by taxonomists

Answer» Correct Answer - A::B
1150.

Which one of the following is now being commercially produced by biotechnological procedures -A. MorphineB. QuinineC. InsulinD. Nicotine

Answer» Correct Answer - C