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3301.

Question : Vibrations of fenestra ovalis are transmitted to

Answer»

PERILYMPH of SCALA vestibuli
Perilymph of scala tympani
Endolymph of scala media
Endolymph of scala vestibuli

Answer :A
3302.

Question : Viable material of endangered species can be preserved by :

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GENE bank
Gene library
Herbarium
Gene pool

Answer :A
3303.

Question : Vestigial wings are found in

Answer»

MALE BLATTA
FEMALE blatta
Male periplaneta
Female periplaneta

Solution :Female blatta
3304.

Question : Vestibular and tympanic canals of cochlea are connected by

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OVAL WINDOW
Round window
Helicotrema
Eustachial canal.

Answer :C
3305.

Question : Vestigial or rudimentary organs

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Solution :They are the useless remnants of structures or organs which might have been large and functional in the ancestors.
Vermiform appendix in man, nictitaing membrane, AURICULAR muscles vestigial TAIL in vertebrates, wisdom teeth, MAMMARY GLANDS in males and BODY hair are some of its examples.
3306.

Question : Vessels of heartwood are blocked by:

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Minerals
Cellulose
Middle lamella
Tyloses

Answer :D
3307.

Question : Vessels and companion cells are found in

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Angiosperm
Pteridophytes
Bryophytes
Gymnosperms

Answer :A
3308.

Question : Vesectomy and Tubectomy

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SOLUTION :
3309.

Question : Very strong light has a direct inhibiting effect on photosyntehsis , which is known as

Answer»

solarisation
etiolation
chlorosis
defoliation

SOLUTION :Usually with INCREASE in light intensity the rate of photosynthesis increased. At very high light intensity the cells EXHIBIT photooxidation by theprocess of solarisation and if it continues for few hours , the photosynthetic APPARATUS is destroyed.
3310.

Question : Vescicular Arbuscular Mycorrhizae are:

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CERTAIN SYMBIOTIC FUNGI which live on the surface of ROOT of higher plants
mycorrhizae which are found within the roots
endomycorrhizae which live between the cells of root CORTEX and send special branches into the cells
All of the above

Answer :C
3311.

Question : Very strong light light has a direct inhibiting effect on photosysnthesis, which is known as

Answer»

SOLARISATION
ETIOLATION
CHLOROSIS
DEFOLIATION

ANSWER :A
3312.

Question : Very low concentration of DNA of pathogen can be amplified and hence diagnosis becomes easy. Which method is suitable for this method?

Answer»


ANSWER :A::C
3313.

Question : Very briefly explian the following : (i) Alleles (ii) Dominanet/recessive (iii) Homozygous (iv) Test cross(v) Back cross (vi) Pleiotropy (vii) Test cross (v) Backcrosss Pleiotropy (vii) Multiple alleles (viii) Incomplete (ix) Espistasisis/hypostaisis(x) Genotype (xi) Linkage (xii) Sex limited caracters (xiii) Sex-iunfluenced traits (xiv) Chromosome aberrations (xv) Gene mutation.

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Solution :(i) There are two alternative forms of a gene for each character, one controlling each of its two contrasting same loci in the homologous chromosomes are called alleles.
(ii) An allele that influnces the appearance of the phenotype even in the presence of an alternative allele is called dominant. The alternative allele is called dominant. The alternative allele is called recessive.
(iii) When the two allels of a gene are similar ans so two copies of thesame allele exists, they aresaid to be in homozygous combinatin. When the two alleles in apir are eidfferent they are in heterozygous state.
(IV) Is is cross between a hybrid organism of an unknown genotype and a homozygous recesive organism.
(v) A genetic cross btween a hybride organism and one of the original parental types is called a back cross
(vi) the multiple effect of a gene is called pleiotropy.
(viii) More than two alternativeforms (alleles) of a gene is aa popluataion occupying the same locus on a chromosome or its homologue are known as multpile alleles.
(viii) The expression of the traits of two pure PARENTS as an intermediate CONDITION or fine mixturein `F_(1)` hybrids is known as incomplete dominance.
(xi) A pair of genes at one locus may prevent the expression of a poir of genes at another locus. Such genes are called epistatic gnes. The prevention of the expression of one paor genes by another pair of genes is called epsitasis. The expresionow whichis prevented by epistatic genes are callled hypostatic genes and the phenomenon as hypostasis.
(x) Genotype of an indivdual refers to the sum total of genes INHERITED from both the parents irrespective of whether they are expressed or not.
(xi) The tendency of the gens present in the same chromosome to stay together in hereditary transmission is known as linkage.
(xii) Certain genesproduce characters in one se only. but not in both even though they are present in both the sexes. Such characters ar called sex-limited charactes.
(xiii) The autosomal traits in which the dominant expression depends on the sex hormones of the individuals are caleld sex-influenced traists.
(xiv) Chrosomal alteration are often called chrosomalaberrations. These mutations affect large portions of the chromosomes and are observable under a mircoscope. They may involve a modificationin the morphology of the chromosomes or a change inthe number of chromosomes.
(xv) Itis a sudden, stable, inheritable alternative in the base sequence of a gene capable of changing the phenotype of an organism
3314.

Question : Verticillaster inflorescence is a cluster of sessile or subsessile flowers borne on a

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DICHASIAL CYME ENDING in a MONOCHASIAL cyme
Scorpioid cyme ending in a monochasial cyme
Scorpioid cyme ending in a dichasial cyme
Monochasial cyme ending in a dichasial cyme

Answer :A
3315.

Question : Vertical distribution of different species occupying different level _____

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SOLUTION :STRATIFICATION
3316.

Question : verticillaster has

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a TYPICAL has
CONDENSED DICHASIAL cymes
condensed POLYCHASIAL cymes
a mixed spadix

Answer :d
3317.

Question : Vertical rise per bp of B-DNA is

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`3.3 A`
`3.8 A`
`3.4 A`
`2.56 A`

ANSWER :C
3318.

Question : Vertebrates have (a) ventral muscular heart (b) bony / cartilaginous vertebral column (c) radula for feeding (d) paired appendages

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a, B
c, d
d
a, b, d

Answer :D
3319.

Question : Vertebrate salivary glands and exocrine part of pancreas are

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Apocrine
Holocrine
Endocrine
Merocrine

Answer :D
3320.

Question : Vertebrate lungs arise from

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pharynx
alveoli
skin
ribs

ANSWER :A
3321.

Question : Vertebral formula of human is –

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`C_(7)T_(12)L_(7)S_(4)Co_(5)`
`C_(7)T_(12)L_(5)S_((5))Co_((4))`
`C_(7)T_(12)L_(5)S_((4))Co_((5))`
`C_(7)T_(12)L_(7)S_((5))Co_((4))`

ANSWER :B
3322.

Question : Vertebrate do not possess:

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DORSAL heart
Ventral heart
Vertebral column
Coelom

Answer :A
3323.

Question : Vernation is

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ARRANGEMENT of VEINS on the lamina
Arrangement of LEAVES on the stem
Folding of leaves in bond
Arrangement of leaves in bud.

Answer :D
3324.

Question : Vernalisation treatment can be given to partially germinated seeds in one of the following plants.

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WHEAT
Rye
Rice
Cotton

Answer :A
3325.

Question : Vernalisation prevents prococious reproductive development late in the growing season.

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ANSWER :1
3326.

Question : Vermiform appendix is an example of ……….. Organ.

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vestigial
homologous
sense
analogous

Answer :A
3327.

Question : Ventral view of human heart.

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SOLUTION :
3328.

Question : Ventricles of human brain .

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SOLUTION :
3329.

Question : Ventral wall of pubis has a small bone called

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coracoid
cotyloid
PUBIC SYMPHYSIS
FEMUR

ANSWER :C
3330.

Question : Ventral view of human brain.

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SOLUTION :
3331.

Question : Ventral nerve cord in cockroaches arises from

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Supra-pharygeal GANGLION
Circum PHARYNGEAL connectives
Sub-pharyngeal ganglion
All of these

Solution :Sub-pharyngeal ganglion
3332.

Question : Venom of Viper affects

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NERVOUS SYSTEM
Circulatory system 
RESPIRATORY system
 NONE of the above. 

SOLUTION :N//A
3333.

Question : Velamen is tissue found in roots of :

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Parasites
All epiphytes
Xerophytes
Mangrove plants

Answer :C
3334.

Question : Velamen belongs to which tissue system ?

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ANSWER :EPIDERMAL
3335.

Question : vehicles treated with catalytic convertershould uselead free petrol because

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LEAD enhances the ACTIVITYOF catalytic converter
lead INACTIVATES the catalyst
lead oxidises the hydrocarbons
lead attracts POLLUTANTS from air

Answer :B
3336.

Question : Vegetatively propagted plant are selected by _____ method.

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ANSWER :CLONAL SELECTION
3337.

Question : Vegetative shoot apical meristem I. produces buds, leaves and stem tissues. II. Mostly protected by sepals. III. Protected by young leaves. IV. Produces sepals, petals, stamens and carpels.

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Only I
I and III
Only II
Only IV

ANSWER :B
3338.

Question : Vegetative reproduction occurs in :-

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Bryophyllum
Sugarcane
Opuntia
All of the above

Answer :D
3339.

Question : Vegetative reproduction is practised for growing some type of plants ?

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Solution :Plants raised by vegetative propagation can bear flowers and fruits earlier than those PRODUCED by SEEDS. Vegetative propagation is also applied in plants LIKE orange, rose, jasmine ETC. All plants are genetically similar to parent PLANT.
3340.

Question : Vegetative reproduction occurs through roots in

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amorphophalus
asparagus
BRYOPHYLLUM
TURMERIC

ANSWER :B
3341.

Question : Vegetative reproduction means:

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A plant portion is used as means of propagation
SEED is used as means of propagation
Fruit is used as means of propagation
Vegetative reproduction is an IMPORTANT CHARACTERISTIC feature of all LIVING organisms.

Answer :A
3342.

Question : 'Vegetative reproduction''

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A male and femal PARENT is required for propagation.
New individual plants PRODUCED are GENETICALLY identical.
Used to harvest plants in LARGE scale.
Helps to preserve its own species.

Solution :A male and female parent is required for progation
3343.

Question : Vegetative propagation takes place with the help of leaves in ……….. Plant.

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Kalanchoe
Oxalis
Cynodon
Dahlia

Answer :A
3344.

Question : Vegetative propagation is mint occurs by

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Sucker
Runner
Offset
Rhizome

Answer :A
3345.

Question : Vegetative propagation is Pistia occurs by

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Sucker
Runner
Offset
Stolon

Answer :C
3346.

Question : Vegetative propagation in pistia occurs by(A) Stolon(B) Offset(C) Runner(D) Sucker

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Stolon
OFFSET
RUNNER
SUCKER

Answer :B
3347.

Question : Vegetative propagation in mint occurs by :

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RUNNER
OFFSET
RHIZOME
SUCKER

ANSWER :A
3348.

Question : Vegetative propagation by leaftakes place in :

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GINGER
BRYOPHYLLUM
ROSE
Duranta

Answer :B
3349.

Question : Vegetative propagated plants are :Genetically similarGenetically dissimilarDonot bear rootsDontsform buds

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GENETICALLY similar
Genetically dissimilar
Donot BEAR roots
Dontsform buds

Answer :D
3350.

Question : Vegetative propagatation in Pistia is a

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UNDERGROUND stem
Subaerial stem
Underground root
Aerial stem

Answer :B