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4701.

Question : The sequence of development of embryo sac is

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ARCHESPORIUM `RARR` megaspore `rarr` MEGASPORANGIUM `rarr` EMBRYO sac
archesporium `rarr` megaspore `rarr` megaspore MOTHER cell `rarr` embryo sac
archesporium `rarr` megaspore mother cell `rarr` megaspore `rarr` embryo sac
megaspore mother cell `rarr` archesporium `rarr` megaspore `rarr` embryo sac

Answer :C
4702.

Question : The sequence of communities of primary succession in water is:

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PHYTOPLANKTON, sedges, free-floating HYDROPHYTES, rooted hydrophytes, grasses and trees.
Phytoplankton, free-floating hydrophytes, rooted hydrophytes, sedges, grasses and trees.
Free-floating hydrophytes, sedges, phytoplankton, rooted hydrophytes, grasses and trees.
Hytoplankton, rooted SUBMERGED hydrophytes, floating hydrophytes, reed SWAMP, sedges, MEADOW and trees.

Answer :b
4703.

Question : The sequence of communities of primary succession in water is :

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phytoplankton, SEDGES, free-floating hydrophytes, rooted hydrophytes, grasses and TREES
phytoplankton, free-floating hydrophytes, rooted hydrophytes, sedges, grasses and trees. 
free-floating hydrophytes, sedges, phytoplankton, rooted hydrophytes, grasses and trees.
phytoplankton, rooted SUBMERGED hydrophytes, floating hydrophytes, REED swamp, sedges, meadow and trees. 

SOLUTION :phytoplankton, rooted submerged hydrophytes, floating hydrophytes, reed swamp, sedges, meadow and trees.
4704.

Question : The sequence of bases in coding strand of DNA is GAGTTAGCAGGC, then the sequence of codons in primary transcript is ……………….

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C U C A U A C G C C C G
C U C A A U C G U C C G
U C A G A U C U G C G C
U U C A A U C G U G C G

Solution :C U C A A U C G U C C G
4705.

Question : The sequence in m-RNAtranscribed from a piece of DNA having a sequence ATTGCATCT

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TAAATGGCC
UAACGUAGA
TAACGTAGA
AATTGCAGA

Answer :B
4706.

Question : The separated bands of DNA are cut out from the agarose gel and extracted from gel piece.

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SOLUTION :ELUTION.
4707.

Question : The separated DNA fragments can be visualised only after staining the DNA with a compound known as

Answer»

ethidium sulphide
ethidium BROMIDE
ethidium sulphite
ethidium bromite

ANSWER :B
4708.

Question : The separation of single cell from the rest of the cells is :

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ORGAN culture
TISSUE culture
Basal MEDIUM
Nurse tissue

Answer :D
4709.

Question : The sense of equilibrium by ear is the function of

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Sensory CELLS of the organ of corti
Sensory CRISTA of the ampulla
Tectorial MEMBRANE of cochlea
Basilar membrane of cochlea

Answer :B
4710.

Question : The semi-conservativenature of DNA replication was established by Meselson and Stahl in their classic experiment with bacteria. They grew bacteria in N^(15)-NH_(4)CIcontaining medium with N_(14) - containing compounds and allowed to grow for three generation . CsCI density gradient centrifugation of isolated DNA established the nature of semiconservation DNA replication. The pictorial representation below shows the positon of differentially labeled DNA in CsCI density gradient. Had the DNA replication been conservative, what would have been the pattern ?

Answer»




ANSWER :C
4711.

Question : The semi-fluid nearly digested food present it the ileum is termed as

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CHYLE
Chyme
Succus ENTERICUS
BILE

ANSWER :A
4712.

Question : The semi dwarf wheat which was instrumental in increasing wheat production was developed

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Alexander VON Humboldt
Paul Ehrlich
Edward Jenner
NORMAN E. Borlaug

SOLUTION :Norman E. Borlaug
4713.

Question : The semen fluid consists of sperm cells and secretion from

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seminal VESICLE,prostate GLAND,COWPER's gland
seminal vesicle,testis,uterus
seminal vesicle,prostate gland,testis
seminal vesicle,Cowper's gland and testis

Answer :A
4714.

Question : The selected cell, tissue or organ is called :

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Callus
EXPLANT
EMBRYO
NONE of above

Solution :Explant
4715.

Question : The seedsof flowering plants are made up of

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Ovaryand ovary wall
Embryo, FOOD reserves and COAT
Cotyledons
Zygotes

Solution :Seedsare the PAKAGE of food. It CONTAINS embryo and is covered with a coat.
4716.

Question : The secretion of male accessory glands contains

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GLUCOSE and CALCIUM
frutose,calcium
frusctose and magnesium
fructose,calcium and zinc

Answer :B
4717.

Question :The secretion and ejection of milk by mammary gland require the synergistic effect of which of the following hormones?

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Estrogen, progesterone
Prolactin, oxytocin
Adrenaline, NORADRENALINE
Both (1)& (2)

Answer :B
4718.

Question : The secondary nucleus is formed by the fusion of ………… .

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TWO POLAR nuclei
three nuclei
two synergids
two ANTIPODAL cells

Answer :A
4719.

Question : The secondary nucleus after fusing with one of the two male gametes develops into :

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ENDOSPERM
EMBRYO
SEED
Fruit

Answer :A
4720.

Question : The secondary metabolite anthocyanin is obtained from………..

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MENTHA piperata
Daucus carota
Nicotiana tabacum
Datura stramoncum

Answer :B
4721.

Question : The secondary follicle differs from the primary follicle in that

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The primary follicle has only a single layer of FLATTENED cells around the OOGONIUM
The secondary follicle has cuboidal COLUMNAR and stratified epithelium around the oogonium
The oocyte within secondary follicle is covered by a thick membrane called ZONA pellucida
all the above

Answer :D
4722.

Question : The second trophic level in a lake is A) PhytoplanktonB)ZooplanktonC)BenthosD)Fishes

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PHYTOPLANKTON
Zooplankton
Benthos
Fishes

Answer :B
4723.

Question : The second trophic level in a lake is

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PHYTOPLANKTON 
ZOOPLANKTON 
BENTHOS 
FISHES 

SOLUTION :Zooplankton
4724.

Question : The second maturation division of the mammalian ovum occurs :-

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In the Graafian FOLLICLE following the first maturation division
Shortly after OVULATION before the ovum MAKES entry into the FALLOPIAN tube
Until after the ovum has been penetrated by a SPERM
Until the nucleus of the sperm has fused with that of the ovum

Answer :C
4725.

Question : The second maturation division of the mammalian ovum occursshortly after ovulation before the ovum makes entry into the fallopian tubeuntil after the ovum has been penetrated by a spermuntil the nucleus of the sperm has fused with that of the ovumin the Graafian follicle following the first maturation division

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shortly after ovulation before the OVUM makes entry into the fallopian tube
until after the ovum has been PENETRATED by a SPERM
until the nucleus of the sperm has fused with that of the ovum
in the Graafian FOLLICLE following the first maturation division

Answer :B
4726.

Question : The second maturation division of the mammalian ovum occurs:

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Until after the ovum has been penetrated by a sperm
Until the NUCLEUS of the sperm has fused with that of the ovum
In the Graafian follicle following the first maturation division
Shortly after OVULATION before the ovum MAKES entry into the FALLOPIAN tube

Answer :A
4727.

Question : The second law of mendel is

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The purity of gametes
The SEGREGATION of UNIT factors
Independent ASSORTMENT of alleles
The random FUSION of gametes

Answer :D
4728.

Question : The second heart sound is produced

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during VENTRICULAR systole by the closure of SEMILUNAR valves
by the closure of atrioventricular valves during ventricular systole
during DIASTOLE by the closure of semilunar valves
by the closure of tricuspid and BICUSPID valves during joint diastole.

Answer :C
4729.

Question : The second heart sound (dub2) is associated with the closure of

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TRICUSPID valve
semilunar valves
BICUSPID valve
tricuspid and bicuspid valves.

Answer :B
4730.

Question : The second GI tag for Jasmine is 'Madurai Malli', which jasmine type has got the first GI tag?

Answer»


ANSWER :MYSORE MALLI'
4731.

Question : The second gamete migrate to the central cell and fused with the ………….. .

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POLAR nuclei
zygote
obturator
corpusculum

Answer :A
4732.

Question : The second division of meiosis may be described as_____ division.

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ANSWER :EQUATIONAL
4733.

Question : The second cranial nerve of man is_____.

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Optic
Trochlear
Auditory
Vagus

Answer :A
4734.

Question : The scientists believe that evolution is gradual. But extinction, part of evolutionary story, are 'sudden' and 'abrupt' and also group-specific. Comment whether a natural disaster can be the cause for extinction of species.

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Solution :Natural disaster like earthquake can cause EXTINCTION of SPECIES.
During the long period since the origin and diversification of LIFE on earth there were five episodes of mass extinction of species.
Sudden extinction of highly flourished DINOSAURS of Jurassic period of Mesozoic era in Cretaceous period ither due to HITTING of the earth by an iridium rich meteorite or due to global cooling.
4735.

Question : The scientist working in botanical garden is known as :-

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BOTANIST
Zoologist
Curator
Herbalist

ANSWER :C
4736.

Question : The scientists believe that evolution is gradual. But extinction, part of evolutionary story, are 'sudden' and 'abrupt and also group-specific. Comment whether a natural disaster can be the cause for extinction of species.

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SOLUTION :Natural disasters that occur on earth from time to time are cause for mass extinction of species in ADDITION to other FACTORS. Extinction of dinosaurs is an example of mass extinction. Sudden and abrupt extinctions have occurred SEVERAL times during EVOLUTION.
4737.

Question : The scientists associated with human genome project

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Watson and CRICK
BEADLE and Tatum
Paul Berg and Wollman
Francis COLLINS and Craig Venter

ANSWER :D
4738.

Question :Who was the first discoverer of antibiotic ?(A) Misher(B) Earnest chane(C) Alexander Fleming(D) Haward Floragan

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L. Pasteur
R. Koch
W. Fleming
A. FLAMING

SOLUTION :A. Flaming
4739.

Question : The scientist who conducted experiment on killed yeast to disprove the theory of spontaneous generation of life was

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STANLEY Miller
J.B.S Haldane
Louis Pasteur
A.I. Oparin

Answer :C
4740.

Question : The scientist used chromosomal movement to explain Mendel's laws

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Punet and bateson
Morgan and Bridges
Sutton and Boveri
Correns and DE Vries

Answer :C
4741.

Question : The scientist noted that The behaviour of chromosomes was paralleld to the behaviour of genes

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DE VRIES, CORRENS and Tschemak
Sutton and Boveri
Punnet and Bateson
Morgaand Bridges

Answer :B
4742.

Question : The scientific term not related to the primary conastriction of a ch romosome is :

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kinomere
centromere
chromomere
Kinetochre

Answer :C
4743.

Question : The scientific study of body movement is called______.

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ANSWER :KINESIOLOGY
4744.

Question : The scientific process by which crop plants are enriched with certain desirable nutrients is called -

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Crop protection
Breeding
Bio-fortification
Bio-remediation

Solution :Bio-fortification: It is the most practical means to improve public health. In bio-fortification breeding of crops with higher levels of VITAMINS and minerals or higher protein and healthier fats. In 2000, maize hybrids were developed that had twice the amount of amino acid lysine and tryptophan (MALT). Atlas 66 (Wheat variety), having HIGH protein content has been USED as a donor for improving CULTIVATED wheat. Iron fortified rice variety CONTAINS over 5 times much Fe.
4745.

Question : The scientific naming of plants begain with publication of Linnaeus book :-

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GENERA plantarum
Systema naturae
Species plantarum
CHARAKA sanhita

ANSWER :C
4746.

Question : The scientific name of Java man is

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HOMO habilis
Homo SAPIENS neanderthalensis
Homo ERECTUS erectus
Australopithecus boisei

Solution :Homo erectus erectus
4747.

Question : The scientific name of Java ape man

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HOMO SAPIENS fosslis
Pithecanthropus ERECTUS
Homo neanderthalensis
Homo habilis

Answer :B
4748.

Question : The scientific key to understand biology and behaviour of human is ………….. .

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BLUE print
genome
genetic linkage
DNA probe

Answer :A
4749.

Question : The science club in your school has decided to organise a street play aiming at giving public awareness against AIDS. a. Mention the important characters performing in this play. b. State the major ideas you are going to convey through the play.

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Solution :a. HIV, T-cells of the immune system, patient, other pathogens like bacteria, viruses, protozoan etc.
b. i. Only ONE life partner in your life
II. Practise safe sex
iii. USE condoms
iv. Don.t SHARE needles and syringes for injection.
v. Don.t receive blood from unknown person.
VI. Treatment is available to cure AIDS.
4750.

Question : The scar on seed where funicle was attached is called

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HILUM
Micropyle
Testa
Tegmen

Solution :FLORAL rewards and attractant are required for flowers POLLINATED by INSECTS