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13651.

Question : Mammalian thymus is mainly concrned by :

Answer»

REGULATION PF BODY temperature
Regulation of body growth
Immunological funtion
Secretion of thyrotropin

Answer :C
13652.

Question : Mammalian RBC doesn't utilize the received oxygen and completely transfer it to tissue cells because of

Answer»

BICONCAVE shape
Enucleate
ABSENCE of MITOCHONDRIA
absence of haemoglobin

Answer :C
13653.

Question : Mammalian prolactin is secreted by:

Answer»

Adenohypophysis
Neurohypophysis
Adrenal cortex
Adrenal medulla

Answer :A
13654.

Question : Mammalian milk is used for preparation of

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SWEET
CHEESE
CURD
All above

SOLUTION :All above
13655.

Question : Mammalian egg is

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Mesolecithal and non-cleidoic
Microlecithal and non-cleidoic
ALECITHAL and non-cleidoic
Alecithal and cleidoic

Solution :Alecithal and non-cleidoic
13656.

Question : Mammae in human male is.........

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(a) ATAVISTIC ORGAN
(b) Rudimentary Organ
(c) VESTIGIAL organ
(d) Homologous STRUCTURE

SOLUTION :Vestigial organ
13657.

Question : MALT constitutes about ………….. per cent of the lymphoid tissue in human body.

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`50%`
`20%`
`70%`
`10%`

SOLUTION :`50%`
13658.

Question : MALT constitutes about__________ percent of the lymphoid tissue in human body

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0.1
0.2
0.3
0.5

Answer :D
13659.

Question : Malpighian tubules of cockroach and septal nephridia of earthworm share one common character

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Both are segmented
Both have ciliated
Both discharge EXCRETORY MATTER into digestive tract
Both release excretory matter only outside.

Answer :C
13660.

Question : Malpighian tubules in cockroach help in_______.

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ANSWER :EXCRETION,
13661.

Question : Malpighian body

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SOLUTION :
13662.

Question : Malignant tumor and Benign tumor

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SOLUTION :
13663.

Question : Males of silkwormBombyx more are known to produce more silk per unit quantity of leaf consumed. Hence, they are preferably bred in sericulture industry. Which of the following genotypes should be crossed in order to get maximum fraction of male insects ? Note : SL_(1) and SL_(2) are sex-linked recessive lethal mutations

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(i) and (iv)
(i) and (iii)
(ii) and (iii)
(ii) and (iv)

Solution :In silkworm, ZZ individuals are males while ZW individuals are females `SL_(1)` and `SL_(2)` are sex-linked recessive lethal mutations which, if present in homozygous CONDITION, can be lethal and may lead to DEATH of the individual. In order to get maximum FRACTION of male insects (i) and (ii) should be crossed because there will be 50 % of the male PROGENY that will be completely normal and free of lethal allele.
13664.

Question : Malignant malaria is caused by

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PLASMODIUM vivax
plasmodium pneumonia
plasmodium malariae
plasmodium falciparum

Answer :D
13665.

Question :Males in whom testes fail to descend to the scrotum are generally infertile. Why?

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SOLUTION :Testis are very sensitive TOWARDS TEMPERATURE. If they are not suspended in scrotum before TEENAGE then PRODUCTION of sperms stops in him. So sterility is found in males.
13666.

Question : Males alwas inherit these traits from the female parents

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Y-linked
X-linked
X and Y - linked
XY-linked

Answer :B
13667.

Question : Malic dehydrogenase enzyme is present in

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Mitochondria
Chloroplast
CYTOSOL
1 & 2

Answer :D
13668.

Question : Male XX and female XY sometimes occur due to :

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Deletion
Transfer of SEGMENTS in SEX chromosomes
Aneuploidy
Hormonal imbalance

Answer :B
13669.

Question : Male sex hormone - secretion of testosterone is done from which cells?

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GAMETE CELLS
Sertoli cell
Interstitial cells
None

Answer :C
13670.

Question : Male sex accessory ducts include all of the following structures except

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SEMINIFEROUS tubule
Rete testis
VASA EFFERENTIA
Vasa deferens

Answer :D
13671.

Question : Male moths recorgnise female moths of their species by sencing pferomones. It is an example of

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HABITAT isolation
behavioural isolation
mechanical isolation
gamete isolation

Answer :B
13672.

Question : Male nucleus of flowering plant fuses with the egg nucleus in

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Promitotic PHASE
MITOTIC phase
Intermediate state
All the above.

Answer :D
13673.

Question : Male member of bees, ants, wasps and sawflies possess how many haploid sets of chromosomes ?

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ANSWER :1
13674.

Question : Maleheterohametyand Femaleheterogamety

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SOLUTION :
13675.

Question : Male honey bees

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Are diploid organisms
PRODUCE gametes by mitosis
Are FORMED by fusion of male gametes with egg
Do not have fathers but can produce sons

SOLUTION :The scar of seed where funicle was attached is CALLED hilum
13676.

Question : Male gametophytic stage and Female gametophytic stage

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SOLUTION :
13677.

Question : Male gametophyte with least number off cells is presentt in

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Pteris
Funaria
Lilium
Pinus

Solution :(c) Lilium (angiosperm) possesses TH male gametophyte with least number of cells.The number of cells in male gametophyte shows the PATTERN of reduction from bryophytes to angiosperms. In angiosperms, it is REDUCED to about 2-3 celled and called as POLLEN grains.The number of cells in male gametophyte decreases in he following orderFunaria gt Pteris gt Pinus gtLilium
13678.

Question : Male gametophyte with least number of cells is present in

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Pteris
Funaria
Lilium
Pinus

Answer :C
13679.

Question :Male gametophyte with least number of cells is present in :

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PINUS
PTERIS
FUNARIA
Lilium

Answer :D
13680.

Question : Male gametophyte of angiosperm is….(A) anther lobe(B) pollen before germination(C) pollen after germination(D) embryosac

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ANTHER lobe
pollen before germination
pollen after germination
embryosac

Answer :C
13681.

Question : What is produced by male gametophyte in angiosperms?

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stamens
microspore
microsporangium
nucellus

Answer :B
13682.

Question :Male gamete in angiosperm is produced by :

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GENERATIVE CELL
MICROSPORE cell
VEGETATIVE cell
TUBE cell

Answer :A
13683.

Question : Male child with blood group AB is colourblind His parnets could be

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Father norma VISION with BLOOD GROUP A, mother COLOURBLIND with group O
Father colourblind with group O, mother colourblind with blood gourp AB .
Father normal vision with blood group A, mother colourblind with blood group B
Father colourblind with blood group O, mother normal vision with blood group O.

Answer :C
13684.

Question :Male child will be born if

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mother TAKES NUTRITIOUS DIET
LACTATION is normal
garnetic frame up is XX
gametic frame up is XY

SOLUTION :gametic frame up is XY
13685.

Question : Male bee pseudocopulates with the flowers of Mediterranean orchid Ophrys because

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The male BEE is attracted for nectar in the flower
The male bee is attracted to the PETAL as it PRESUMES it to be the female bee
The male is attracted for shelter
None

Answer :B
13686.

Question : Male and female sex organ of Chara are respectively called as

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GLOBULE and nucule
Nucule and globule
Archegoniophore and antheridiophore
Oogonium and antheridium

Answer :A
13687.

Question : Male and female gametophytes are independent and free-living in

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mustard
castor
pinus
SPHAGNUM

Solution :(d) In Sphagnum, male and femalegametophytes are independent and FREE living.In bryophytes, the most conspicuous phase in life CYCLE is the gametophyte. It is independent and concerned with reproduction.
13688.

Question : Male and female animals of two different related species are mated .in some cases,the progeny may combine the desirable features of both the parents name the type of hybridisation ?

Answer»


ANSWER :INTERSPECIFIC HYBRIDISATION
13689.

Question : Malaria Eradication programme lauched by WHO is a failure .Why?

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Solution :In the 1950.s the WORLD Health Organisation (WHO) inroduced the Malaria eradication PROGRAMME.This programme was not SUCCESSFUL DUE to the RESISTANCE of plasmodium to the drugs used to treat it and resistance of mosquito.s to DDT and other insecticides.
13690.

Question : Mala is a genetic research student . She was given a plant to identify whether it is a homozygous or heterozygous for a particular trait. How will she proceed further ?

Answer»

Solution :To identify the plant genotype whether homozygous or heterozygous Mala can perform test CROSS , where the individual is CROSSED with homozygous recessive for the TRAIT. If the plant is heterozygous then the RESULTANT progenies would be in the RATION 50 :50 (i.e,1:1)
13691.

Question : Make pairs by using the following terms given below. Nucleosome,Valine,AUG,Lac Operon,Histones,Sickle cell anaemia, Methionine,beta - glactosidase

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SOLUTION :NUCLEOSOME - HISTONES
AUG -Menthionine
Valine -Sickle cell anaemia
LAC Operon - `beta` - galactosidace
13692.

Question : Make pairs by putting the related items togethre stating their relationship Manascus puroureus, Trichoderma polysporum, Ethanol , Blood clot, Streptokinase, Statin , Cyclosporin-A, Sachharomyces cerevisiae

Answer»

SOLUTION :
13693.

Question : Make correct pair.

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(P-III), (Q-II), (R-i)
(P-iii), (Q-i), (R-ii)
(P - ii), (-i), (R-ii)
(P-i), (Q -ii), (R -iii) 

ANSWER :B
13694.

Question : Make a list of three household products along with the names of the micro-organisms producing them.

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SOLUTION :1. Curd `""`: Lactobacillus
2. Bread`""`: Saccharomyces cerevisiae.
3. SWISS CHEESE: Propionibacterium Sharmanii.
13695.

Question : Make chart (with diagrammatic representation) showing a restriction enzyme, the substrate DNA on which it acts the site at which it cute DNA and the product it produces.

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Solution :REFER the diagram PAGE No. 122 FIG. 4.1
13696.

Question : Make a chart (with diagrammatic representation) showing a restriction enzyme, the substrate DNA ,on which it acts, the site at which it cuts DNA and the product it produces.

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SOLUTION :Restriction ENZYME = ECORI
SOURCE = E.
13697.

Question : Majority of the nephrons in the human kidney are

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Juxta medullary - with LONG LOOP of HENLE
Juxta medullary - with short loop of Henle
Cortical - with long loop of Henle
Cortical - with short loop of Henle

Answer :D
13698.

Question : Major sources of biofertilizers are:

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SELECTED SYMBIOTIC micro-organisms
only NITROGEN FIXING bacteria
only nitrogen fixing CYANOBACTERIA
bacteria, cyanobacteria and fungi

Answer :D
13699.

Question : Major pollutant presentin automobile exhaustis

Answer»

lead
CO
`CO_2`
hydrocarbon

Answer :B
13700.

Question : Major phase of respiration occuring in F_(1) particle.

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SOLUTION :