24277 + Interview Questions in Biology in Class 12 Page 378 InterviewSolution

18851.	Question : Crossing over is advantageous because it brings about
Answer» variation linkage inbreeding stability Answer :A

Discussion

18852.	Question : Crossing over in diploid organisms is responsible for
Answer» Deominanee of genes LINKAGE between genes Recombination of linkage genes Segregation of alleles. Answer :C

Discussion

18853.	Question : CrossingoverandLinkage
Answer» SOLUTION :

Discussion

18854.	Question : Crossing of unrelated pure breeding animals of different traits within the same breed is called
Answer» CROSS breeding Out crossing Close breeding Species hybridisation Answer :B

Discussion

18855.	Question : Crossing of F_1 to any one the parent refers to ............
Answer» SELFING BACK CROSS test cross all of the above ANSWER :B

Discussion

18856.	Question : Crosses between the plants of the same veriety is called
Answer» (a) INTERSPECIFIC (B) intervarietal (C) intravarietal (d) intergeneric Answer :C

Discussion

18857.	Question : Crossbreeds/indigenous breedof animals are more advantages.
Answer» ANSWER :CROSSBREEDS

Discussion

18858.	Question : Crossbreeding:
Answer» Solution :(1)Crossbreedingis a practice in which superior males of ONE breed are MATED with superior females of another breed.(2)The desirable qualities of two defferent breeds are combined by the method of crossbreeding.(3)The progency formed by crossbreeding is hybrid which may be USED for commercial production.(4)The uhybrids are then subjected to some form of inbreeding and selection for developing new stable breed such breeds are usually superioe to the existing breeds.(5)Using this method HISARDALE breed of sheep is developed in punjab by crossing Bikaneri ewes and marino rams.

Discussion

18859.	Question : Cross involving an unknown genotype and recessive parent ……..
Answer» SOLUTION :TEST CROSS

Discussion

18860.	Question : Cross pollination has the advantage of
Answer» Mutation Polyploidy formation Genetic Recombination Crossign over Answer :C

Discussion

18861.	Question : Cross between which animals lead to the production of mule?
Answer» Solution :INTERSPECIFIC hybridization (A cross between a male DONKEY and a FEMALE horse).

Discussion

18862.	Question : Cross between unrelated group of organisms is called
Answer» hybrid test crosss hack cross heterosis Answer :A

Discussion

18863.	Question : cross between unrelated group of organisms is called:
Answer» HYBRID TEST CROSS BACK cross heterosis Answer :A

Discussion

18864.	Question : Cross between AABb and aaBb yield AaBB: AaBb: Aabb: aabb offspring in the ratio of
Answer» `0:3:1:1` `1:2:1:0` `1:1:1:1` `1:2:1:1` ANSWER :B

Discussion

18865.	Question : Cross between genus is
Answer» INTRASPECIFIC HYBRIDISATION Intervarietal hybridisation Intergenetic hybridisation Intergenetic hybridisation Solution : Intergenetic hybridisation

Discussion

18866.	Question : Cropping and settlements is allowed in which zone, Biosphere reserve ?
Answer» Natural zone Buffer zone MANIPULATION zone Both (2) and (3) Solution :Cropping and settlements allowed only in Manipulation or TRANSITION zone of biosphere reserve.

Discussion

18867.	Question : Crop rotation is carried out for:
Answer» INCREASING ACIDITY of soil Decreasing FERTILITY of soil Increasing fertility of soil All of the above Answer :C

Discussion

18868.	Question : Crop plants grown in monoculture are
Answer» Characterised by POOR root system Highly prone to PESTS Low in yields Free from intraspecific competition ANSWER :B

Discussion

18869.	Question : Crop improvement brought about by induced mutations.
Answer» SOLUTION :MUTATION BREEDING.

Discussion

18870.	Question : Cromagnon Man differs from Neanderthal Man in having
Answer» Brachiasm Smaller jaws Larger jaws Cannibalism. Solution :NeturalRadioactivity. Elements from POLONIUM (atomic number 84) to URANIUM (atomic number 92) are naturally RADIOACTIVE. Radiosotopes occur ofsome LIGHTER elements as wel, e.g., `.^(14)C, .^(40)K`.

Discussion

18871.	Question : Crocodileheart is
Answer» TWO CHAMBERED THREE chambered Four chamberd Multichambered SOLUTION :N//A

Discussion

18872.	Question : Cro-Magnon man nearer to which of the following?
Answer» Rhodesian Neanderthal MODERN MAN All of above Solution :Modern man

Discussion

18873.	Question : Cro-Magnon man is
Answer» Homo sapiens fossilis Homoneanderthalensis Homo habilis Homo eretus. Solution :Important Domestications (i) Dog domesticated in Mesopotamia -10,000 BC (II) Einkorn Wheat domesticated in Pales. tine -9,000 BC (ii) Sheep and Goat domesticated in Persia 9,000 BC (i) Water BUFFALO and Chicken domesticated (u) Cattle domesticated in Asia Minor in Asia 7,000 BC 7,000 BC (UL) Horse domesticated in Russia 5,000 BC (vii) Millets domesticated in China 5,000 BC (x) Reindeer domesticated in Siberia 1,000 BC (viii) Camel domesticated in Arabia 3,000 BC (ix) YAK domesticated in Tibet 2,500 BC (xi) Oat domesticated in Europe 1,000 BC. (xii) Turkey domesticated in America 100 AD.

Discussion

18874.	Question : Cro-Magnon man existed …………….years ago.
Answer» 5,00,000 75000 30000 50000 Solution :30000

Discussion

18875.	Question : Cro-magnon man emerged about
Answer» `34000` years ago in Pleistocene epoch `25000` years ago in Pleistocene epoch `1500` years ago in Pleistocene epoch `34000` years ago in HOLOCENE epoch Answer :D

Discussion

18876.	Question : Cro- Magnon mam was
Answer» HERBIVOROUS FRUGIVOROUS SANGUIVOROUS OMNIVOROUS ANSWER :D

Discussion

18877.	Question : Cro-Magnon man was:
Answer» Solution :(1)The scientific name of cro-magnin MAN is homo sapiens fossilis(2)They were 180 CM tall with large skull,rounded forehead distint CHIN,narrow nose,eyebrow ridges thin and broad FACE.(3)The cranial capacity was about 1600 c.c(4)The lived in caves with families and were hunting and painting.They made tools and weapons such aseads ,bows,arroes,etc.they used hides of animals to protect their body and usedornaments made from ivory to decorate their bodies.(5)They buried thrier dead according to their customs.\

Discussion

18878.	Question : Critical elements :
Answer» Which are in more CONCENTRATION in soil Which are COMMONLY DEFICIENT in soil Whch are ABSENT in soil None of the above Answer :B

Discussion

18879.	Question : Crippling disease is caused due to poisoning of ………… .
Answer» arsenic lead mercury selenium Answer :C

Discussion

18880.	Question : Criss cross inheritance is shown by
Answer» Y-LINKED gene X,Y- linked gene X-linked RECESSIVE gene Autosomal gene Answer :C

Discussion

18881.	Question : Crippling disease is caused due to poisoning of ………………
Answer» ARSENIC LEAD MERCURY SELENIUM ANSWER :A

Discussion

18882.	Question : Cnidoblast are present only in :
Answer» ARTHROPODA COELENTERATA MOLLUSCA Echinodermata Answer :B

Discussion

18883.	Question : Cnidarians exhibit two basic body forms called___and_____.
Answer» ANSWER :POLYP, MEDUSA,

Discussion

18884.	Question : Cretinism is produced when one of the following is deficient.
Answer» Adrenaline Growth hormone Parathormone Thyroxine Answer :D

Discussion

18885.	Question : Credit for establishing nucleus as biolgical entity goes to
Answer» Leeuwenhoek Schwann Koch ROBERT Brown. Answer :D

Discussion

18886.	Question : Credit for bringing green revolution to India goes to Or Scented basmati rice is the contribution of
Answer» B.P. Pal Norman Borlaug M.S. SWAMINATHAN K.C. Mehta Solution :Dr. M.S. Swaminathan is PIONEER MUTATION breeder and responsible for green revolution in INDIA. Dr. Swaminathan is called "Father of green revolution in India.

Discussion

18887.	Question : Craspedate (with velum) medusa is present in the pair
Answer» AURELIA and Rhizostoma Pennatula and Aurelia Rhizostoma and Corallium Physalia and Halistemma. Answer :A

Discussion

18888.	Question : Create an aquaticfood chain in a waterbody into which effluents flow from a pesticide factory. Diagrammatically represent biomagnification in thisfoodchain.
Answer» Solution :A few toxic substanceoften presentin INDUSTRIAL waste waters, can undergo BIOLOGICAL magnification in theaquatic foodchain. Increase in concentration of the TOXICANT at successivetrophic levels refers to biomagnifications. Thisis dueto a toxic substanceaccumulatedby organism cannot be metabolisedor excreted and thus,passes onto the nexthighertrophiclevel . THis phenomenon is well knowfor mercury and DDT. The figureshownsbiomagnification of DDTin an aquaticfood CHAIN . Inthis manner , the concetration of DDT is in creased at successivetrophic levels . If is starts at 0.003 ppb (part per billion ) inwater ,it can ultimately reach25 ppm (part per MILLION) in fish eating birds, through biomagnification . High concentration of DDTdisturbs calcium metablolism in birds, whichcauses thickeningof egg shell and their premature breakingeventually causingdeclinein brids populations.

Discussion

18889.	Question : Cranial cavity of Australopithecus was:
Answer» 650-700 `cm^3` 420-500`cm^3` 1050-1150`cm^3` 1400-1450`cm^3` ANSWER :B

Discussion

18890.	Question : Cranial capacity of Neanderthal man was
Answer» 1600cc 650-800cc 900cc 1400cc Answer :D

Discussion

18891.	Question : Cranial capacityof modern man is nearest to
Answer» NEANDERTHAL MAN AUSTRALOPITHECUS JAVA man Pekingman Answer :A

Discussion

18892.	Question : The cranial capacity of Homo erectus was
Answer» 1200-1600 cc 900-1100cc 600-1000cc 450-650cc Answer :B

Discussion

18893.	Question : CPCB: Central Pollution Control Board :: NIOH : …(A) New Institute of Odhavji Hirji(B) National Institute of Health(C) National Institute of Occupational Health(D) Norway Institute of Harvard
Answer» NEW INSTITUTE of Odhavji Hirji National Institute of Health National Institute of OCCUPATIONAL Health Norwey Institute of Haward ANSWER :C

Discussion

18894.	Question : CPCB STAND FOR
Answer» CENTRAL pollution consistent BOARD Central particulate COLLECTION & analysisboard Central pollution Control board Central phenomenon coexisting board (pollution) Answer :C

Discussion

18895.	Question : Coxal bone of pelvic girdle is formed by fusion of
Answer» ILIUM, ISCHIUM and PUBIS SCAPULA and clavicle Ilium and scapula Iliun, scapula and ischium ANSWER :A

Discussion

18896.	Question : Cowpers glands are situated on ____ (A) _____ and open in _____ (B) _____
Answer» A = PENILE urethara, B = MEMBRANOUS URETHRA A = Membranous uretha, B = PROSTATIC urethra A = Prostatic urethra, B = Penile urethra A = Membranous urethra, B = Penile urethra Answer :D

Discussion

18897.	Question : Cow's milk is yellowish in colour because of the presence of
Answer» RIBOFLAVIN BIOTIN LARGE amount of fat FE Answer :A

Discussion

18898.	Question : Cowper's gland secretes a substance to :- (a) Nourish sperm (b) Neutralize acidity of urethra (c) Form the major part of semen (d) Lubricate penis to faciliate copulation
Answer» a and B are correct a and C are correct b and d are correct b, c and d are correct Answer :C

Discussion

18899.	Question : Cowper's glands secrete a substance to I. Nourish sperms II. Neutralise the acidity III. Kill pathogens IV. Lubricate female vagina to facilitate copulation
Answer» I, II, III are correct I and II are correct II and IV are correct I and III are correct Answer :C

Discussion

18900.	Question : Cowpers gland of male correspondto which glandof female ?
Answer» ANSWER :Bertholin GLAND

Discussion

Explore topic-wise InterviewSolutions in .

Question : Crossing over is advantageous because it brings about

Question : Crossing over in diploid organisms is responsible for

Question : CrossingoverandLinkage

Question : Crossing of unrelated pure breeding animals of different traits within the same breed is called

Question : Crossing of F_1 to any one the parent refers to ............

Question : Crosses between the plants of the same veriety is called

Question : Crossbreeds/indigenous breedof animals are more advantages.

Question : Crossbreeding:

Question : Cross involving an unknown genotype and recessive parent ……..

Question : Cross pollination has the advantage of

Question : Cross between which animals lead to the production of mule?

Question : Cross between unrelated group of organisms is called

Question : cross between unrelated group of organisms is called:

Question : Cross between AABb and aaBb yield AaBB: AaBb: Aabb: aabb offspring in the ratio of

Question : Cross between genus is

Question : Cropping and settlements is allowed in which zone, Biosphere reserve ?

Question : Crop rotation is carried out for:

Question : Crop plants grown in monoculture are

Question : Crop improvement brought about by induced mutations.

Question : Cromagnon Man differs from Neanderthal Man in having

Question : Crocodileheart is

Question : Cro-Magnon man nearer to which of the following?

Question : Cro-Magnon man is

Question : Cro-Magnon man existed …………….years ago.

Question : Cro-magnon man emerged about

Question : Cro- Magnon mam was

Question : Cro-Magnon man was:

Question : Critical elements :

Question : Crippling disease is caused due to poisoning of ………… .

Question : Criss cross inheritance is shown by

Question : Crippling disease is caused due to poisoning of ………………

Question : Cnidoblast are present only in :

Question : Cnidarians exhibit two basic body forms called___and_____.

Question : Cretinism is produced when one of the following is deficient.

Question : Credit for establishing nucleus as biolgical entity goes to

Question : Credit for bringing green revolution to India goes to Or Scented basmati rice is the contribution of

Question : Craspedate (with velum) medusa is present in the pair

Question : Create an aquaticfood chain in a waterbody into which effluents flow from a pesticide factory. Diagrammatically represent biomagnification in thisfoodchain.

Question : Cranial cavity of Australopithecus was:

Question : Cranial capacity of Neanderthal man was

Question : Cranial capacityof modern man is nearest to

Question : The cranial capacity of Homo erectus was

Question : CPCB: Central Pollution Control Board :: NIOH : …(A) New Institute of Odhavji Hirji(B) National Institute of Health(C) National Institute of Occupational Health(D) Norway Institute of Harvard

Question : CPCB STAND FOR

Question : Coxal bone of pelvic girdle is formed by fusion of

Question : Cowpers glands are situated on ____ (A) _____ and open in _____ (B) _____

Question : Cow's milk is yellowish in colour because of the presence of

Question : Cowper's gland secretes a substance to :- (a) Nourish sperm (b) Neutralize acidity of urethra (c) Form the major part of semen (d) Lubricate penis to faciliate copulation

Question : Cowper's glands secrete a substance to I. Nourish sperms II. Neutralise the acidity III. Kill pathogens IV. Lubricate female vagina to facilitate copulation

Question : Cowpers gland of male correspondto which glandof female ?

Question : Cnidarians exhibit two basic body forms called_and___.

Question : Cowpers glands are situated on __ (A) _ and open in _ (B) ___