24277 + Interview Questions in Biology in Class 12 Page 375 InterviewSolution

18701.	Question :DCMN kills the herbs by
Answer» inhibiting photoreactionII of Photosynthesis checking ELECTRON transport SYSTEM in photo-synthesis from is PS-II to is PS-I inhibiting photoreaction-I of Photosynthesis all of the above Answer :B

Discussion

18702.	Question : David Tilman's long - term ecosystem experiments using outdoor plots confirmed that :
Answer» INCREASED DIVERSITY contributed to higher PRODUCTIVITY Plots with more species showed less year to year variation in the total biomass Both ( A ) and ( B ) Biodiversity has no relation with productivity . RESISTANCE and stability Answer :C

Discussion

18703.	Question : Dature is a classical example of :
Answer» Trisomy triplooisy monosomy monoploidy Answer :A

Discussion

18704.	Question : Darwin's finches represent
Answer» REPRODUCTIVE isolation geographical isolation climatic variation morphological variation Answer :B

Discussion

18705.	Question :Darwin's theory is popularly known as 'theory of natural selection'. How is Lamarck's theory known as?
Answer» SOLUTION :THEORY of INHERITANCE of ACQUIRED CHARACTERS

Discussion

18706.	Question :'Darwin's finches' refers to
Answer» FOSSILS of birds collected by DARWIN at Galapagos islands A TYPE of birds PRESENT on Galapagos islands Migratory birds collected by Darwin at Galapagos islands Fossils of reptiles collected by Darwin at Galapagos islands Solution :A type of birds present on Galapagos islands

Discussion

18707.	Question : Darwin's finches are a good example of
Answer» industrial MELANISM connecting link ADAPTIVE radiation convergent EVOLUTION SOLUTION : adaptive radiation

Discussion

18708.	Question : Darwin's finches and Australian marsupials are suitable examples of adaptive radiation- Justify the statement.
Answer» Solution :Darwin.s finches are the birds whose common ancestor aived on the Galapagos about 2 million years AGO. During that time, Darwin.s finches have evolved into 14 recognized species differing in body size, beak shape and feeding behavior. Changes in the size and form of the beak have enabled different species to utilize different food resources such as insects, seeds, nectar from cactus flowers and blood from iguanas, all driven by Natural selection. Genetic VARIATION in the ALXI gene in the DNA of Darwin finches is asociated with variation in the beak shape. Mild mutation in the ALXI gene leads to phenotypic change in the shape of the beak of the Darwin finche. Marsupials in Australia and PLACENTAL mammals in North America are two subclasses of mammals they have adapted in similar way to a particular food resource, locomotory skill or climate. They were separated from the common ancestor more than 100 million years ago and each lineage continued to evolve independently. Despite temporal and geographical separation, marsupials in Australia and placental mammals in North America have produced varieties of species living in similar habitats with similar WAYS of lifc. Their overal resemblance in shape, locomotory mode, fecding and foraging are superimposed upon different MODES of reproduction. This feature reflects their distinetive evolutionary relationships. Over 200 species of marsupials live in Australia along with many fewer species of placental mammals. The marsupials have undergone adaptive radiation to occupy the diverse habitats in Australia. just as the placental mammals have radiated across North America.

Discussion

18709.	Question : Darwin's finches are a good example of:
Answer» INDUSTRIAL melanism CONNECTING link Adaptive RADIATION Convergent evolution SOLUTION :Adaptive radiation

Discussion

18710.	Question : Darwin's finches are an excellent example of .....
Answer» CONNECTING links seasonal migration ADAPTIVE RADIATION PARASITISM SOLUTION :adaptive radiation

Discussion

18711.	Question : Darwinism finches are an excellent example of
Answer» ADAPTIVE RADIATION seasonal migration brood PARASITISM CONNECTING links Solution :adaptive radiation

Discussion

18712.	Question : Darwinism explains all the following except
Answer» WITHIN each species, there are variations Organisms TEND to produce more number of offspring that can survive Offspring with better TRAITS that overcome competition are best suited for the environment Variations are inherited from PARENTS to offspring through genes Solution :Variations are inherited from parents to offspring through genes

Discussion

18713.	Question : Darwin travelled in which of the following ship?
Answer» H N S Eagle D Matrica H M S Beagle Titanic Answer :C

Discussion

18714.	Question : Darwin judged the fitness of an individual by
Answer» ABILITY to defend itself Strategy to OBTAIN food NUMBER of offsprings Dominance over other individuals Solution :Number of offsprings

Discussion

18715.	Question : Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution?
Answer» DISCONTINUOUS variations Parasites and predators as natural ENEMIES Survival of the FITTEST STRUGGLE for existence Solution :Discontinuous variations

Discussion

18716.	Question : Darwin proposed the theory of
Answer» INHERITANCE of ACQUIRED CHARACTERS NATURAL SELECTION Recapitulation Continuity of germplasm Solution :Natural selection

Discussion

18717.	Question : Darkness stimulates the release of the following hormone
Answer» A water soluble CAUSING ageing in adults A hormone that maintains MENSTRUAL cycle A hormone that PREVENTS diuresis A hormone that stimulates uterine muscle contractions Answer :B

Discussion

18718.	Question : Darkly stained region of chromatin.
Answer» ANSWER :HETEROCHROMATIN

Discussion

18719.	Question : Dark reaction of photosynthesis is called so because
Answer» It can ALSO occur in DARK Cannot occur during day Occurs more rapidly at NIGHT It does not require LIGHT ANSWER :D

Discussion

18720.	Question : Dark reaction of photosynthesis is ……….. .
Answer» SYNTHETIC process independent of light both (a) and (B) DEPENDENT on light Answer :C

Discussion

18721.	Question : Dancers and sports person are able to mintain their proper body position by using their internal sense of balance. Sensing of this sort of body's internal condition and position is perfomed by :
Answer» ORGAN of CORTI CRISTA MACULA Otolighic organ Answer :B

Discussion

18722.	Question : Damage to thymus in a child may lead to
Answer» Loss of cell-mediated immunity A REDUCTION in the haemoglobin CONTENT in blood A reduction in the AMOUNT of PLASMA proteins Loss of antibody-mediated immunity Solution :Loss of cell-mediated immunity

Discussion

18723.	Question : Damaged and electronic goods are known as ________.
Answer» ANSWER :A

Discussion

18724.	Question : Damage to hearing is caused by sound which exceed
Answer» 70 DECIBELS 100 decibels 110 decibels 120 decibels Answer :D

Discussion

18725.	Question : Damage to the apicalmeristem of a growing yound plant will affect the
Answer» lengthof the PLANT COLOUR of the flower colour of the leaves taste of the fruits Solution :Damageto the apicalmeristem of a plant will AFFECT the upward growth of the plant sinceit isthe apical meristem that is present in TIP PORTION of shoot, roots and leaves.

Discussion

18726.	Question : Daltonism in human being
Answer» RED GREEN colorblindness Green colorblindness Blue colorbllindness Complete colorblindness Answer :A

Discussion

18727.	Question : Cytosterility in the pollen of maize is due to
Answer» Extrachromosomal INHERITANCE COMPLEMENTARY genes Nuclear inheritance Hypostasis Answer :A

Discussion

18728.	Question : Cytoskeleton is made up of:
Answer» CALLOSE deposits Cellulosic microfibrils Proteinaceous filaments Calcium CARBONATE granules Answer :C

Discussion

18729.	Question : Cytoplasmic streaming is related to
Answer» Symplastic pathway Apoplastic pathway Long DISTANCE transport Both (1) & (3) ANSWER :A

Discussion

18730.	Question : Cytoplasmic male sterility in maize is the phenotypic manifestation of the interactions between
Answer» Cytoplasmic factors and male STERILITY GENES Cytoplasmic factors and male fertility nuclear genes CHLOROPLAST genes and nuclear genes MITOCHONDRIAL and chloroplast genes Answer :B

Discussion

18731.	Question : cytoplasmic inheritance is due to (1) mitochondria and chloroplast, (2) cilia and flagella, (3) cytoplasmic particles, (4) cells wall and cell coat.
Answer» 1, 2 and 3 are CORRECT 1 and 2 are correct 2 and 4 are correct 1 and 3 are correct Answer :D

Discussion

18732.	Question : Cytoplasmic malesteritiy in maizeis due to defective
Answer» Chloroplasts Mitochondria Allosomes Lysosomes Answer :B

Discussion

18733.	Question : Cytolysins which damages the cell membranes of microbes are secreted by :-
Answer» HELPER T-cells Cytotoxic T-cells Plasmoblasts Suppressor T-cells Answer :B

Discussion

18734.	Question : Cytokinins are generally
Answer» ACIDS Aminopurines PHENOLS GLUCOSIDES ANSWER :B

Discussion

18735.	Question : Cytokinins are responsible for -apical dominance in plants.
Answer» ANSWER :AUXINS

Discussion

18736.	Question : Cytokinin helps in
Answer» CELL division Fruit ripening BOTH(A) AND (B) Senescence Answer :A

Discussion

18737.	Question :Cytokinesis in animal cells is by.
Answer» ANSWER :FURROWING

Discussion

18738.	Question : Cytochromes I. dissolve easily into the lipid component of chloroplast membranes. II. are small proteins that contain a cofactorf , haem, which holds an iron atom . III. Are losely associated with chloroplast membrances. IV. are an intergral part of the chloroplasts thylakoid membranes and cannot be removed without destroying the membrane.
Answer» III and IV I, II and IV Only I I and II Answer :D

Discussion

18739.	Question : Cytochrome oxidase is related with
Answer» CYT B Cyt `a_3` Cyt `c_1` Cyt. c Answer :B

Discussion

18740.	Question : Cytochromes act as:
Answer» `CO_2` ACCEPTOR `O_2` acceptor Electron acceptor Proton acceptor Answer :C

Discussion

18741.	Question : Cytochrome oxidase contains :
Answer» Mg Fe Hg CO Answer :B

Discussion

18742.	Question : Cytochrome oxidase is a/an:
Answer» Exoenzyme Endoenzyme Proenzyme Coenzyme Answer :B

Discussion

18743.	Question : Cytochrome is a component of ETC in mitochendria/chloroplast, acting as electron acceptor. It is a
Answer» glycoprotein lipid `CA2^+` containing METALLO FLAVOPROTEIN `Fe^(+++)` containing prophyrin pigment protein Answer :D

Discussion

18744.	Question : Cytochrome carries electrons on Fe-atom , whereas
Answer» MAGNESIUM COPPER mangenese IRON ANSWER :B

Discussion

18745.	Question : Cytochrome is a
Answer» Mg pyrole RING FE porphyrin ring Nucleotide Alloy of NICHROME ANSWER :B

Discussion

18746.	Question : Cytidine is a
Answer» Nucleoside Nucleotide Dicyclic NITROGEN base Monocyclic nitrogen base Answer :A

Discussion

18747.	Question : Cyt. a and a_(3) are the components of
Answer» COMPLEX IV Complex II Complex III Complex I ANSWER :A

Discussion

18748.	Question : Cystic fibrosis is an autosomal recessive disease . In an island having a population of 200 people, 98 people suffer from cystic fibrosis. How many people are carried of this disease ?
Answer»

Discussion

18749.	Question : Cystic fibrosis can be treated by -in gene therapy
Answer» TGP-B TPA Dnase BGH Answer :C

Discussion

18750.	Question : Cystic duct drains out the secretions from
Answer» GALL bladder Liver Pancreas Intestine Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question :DCMN kills the herbs by

Question : David Tilman's long - term ecosystem experiments using outdoor plots confirmed that :

Question : Dature is a classical example of :

Question : Darwin's finches represent

Question :Darwin's theory is popularly known as 'theory of natural selection'. How is Lamarck's theory known as?

Question :'Darwin's finches' refers to

Question : Darwin's finches are a good example of

Question : Darwin's finches and Australian marsupials are suitable examples of adaptive radiation- Justify the statement.

Question : Darwin's finches are a good example of:

Question : Darwin's finches are an excellent example of .....

Question : Darwinism finches are an excellent example of

Question : Darwinism explains all the following except

Question : Darwin travelled in which of the following ship?

Question : Darwin judged the fitness of an individual by

Question : Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution?

Question : Darwin proposed the theory of

Question : Darkness stimulates the release of the following hormone

Question : Darkly stained region of chromatin.

Question : Dark reaction of photosynthesis is called so because

Question : Dark reaction of photosynthesis is ……….. .

Question : Dancers and sports person are able to mintain their proper body position by using their internal sense of balance. Sensing of this sort of body's internal condition and position is perfomed by :

Question : Damage to thymus in a child may lead to

Question : Damaged and electronic goods are known as ________.

Question : Damage to hearing is caused by sound which exceed

Question : Damage to the apicalmeristem of a growing yound plant will affect the

Question : Daltonism in human being

Question : Cytosterility in the pollen of maize is due to

Question : Cytoskeleton is made up of:

Question : Cytoplasmic streaming is related to

Question : Cytoplasmic male sterility in maize is the phenotypic manifestation of the interactions between

Question : cytoplasmic inheritance is due to (1) mitochondria and chloroplast, (2) cilia and flagella, (3) cytoplasmic particles, (4) cells wall and cell coat.

Question : Cytoplasmic malesteritiy in maizeis due to defective

Question : Cytolysins which damages the cell membranes of microbes are secreted by :-

Question : Cytokinins are generally

Question : Cytokinins are responsible for -apical dominance in plants.

Question : Cytokinin helps in

Question :Cytokinesis in animal cells is by.

Question : Cytochrome oxidase is related with

Question : Cytochromes act as:

Question : Cytochrome oxidase contains :

Question : Cytochrome oxidase is a/an:

Question : Cytochrome is a component of ETC in mitochendria/chloroplast, acting as electron acceptor. It is a

Question : Cytochrome carries electrons on Fe-atom , whereas

Question : Cytochrome is a

Question : Cytidine is a

Question : Cyt. a and a_(3) are the components of

Question : Cystic fibrosis is an autosomal recessive disease . In an island having a population of 200 people, 98 people suffer from cystic fibrosis. How many people are carried of this disease ?

Question : Cystic fibrosis can be treated by -in gene therapy

Question : Cystic duct drains out the secretions from