24277 + Interview Questions in Biology in Class 12 Page 141 InterviewSolution

7001.	Question : The C_4 plants are photosynthetically more efficient than C_3 plants because :
Answer» The `CO_2`EFFLUX is not prevented They have more chloroplasts The `CO_2`COMPENSATION POINT is more `CO_2` GENERATED during photorespiration is Answer :B

Discussion

7002.	Question : testcross is used to
Answer» check HETEROZYGOSITY in `F_1` generation check heterozygosity in `F_2` generation check INDEPENDENT ASSORTMENT in `F_2` generation. SEGREGATION segregation in `F_2` generation ANSWER :A

Discussion

7003.	Question : The C4 molecules , formed after the CO_(2) fixation by CAM plants , are stored in :
Answer» Vacuoles of mesophyll cells Cortex Endrodermal CASPARIAN stripe All of these Solution :CAM plants use PEPCase to fix `CO_(2)` at night , forming a` C_(4)` MOLECULES which is stored in large vaculoes in their mesophlyll cells until the next day.

Discussion

7004.	Question : Testcross is a cross betweena) Hybrid x Dominant parentb) Hybrid x Recessive parentc) Hybrid x Hybrid parentd) Two distantly related species
Answer» HYBRID X Dominant parent Hybrid x Recessive parent Hybrid x Hybrid parent Two DISTANTLY related species Answer :B

Discussion

7005.	Question : Testa of a seed is produced from(A) ovary wall(B) hilum(C) outer integument of ovule(D) funicle
Answer» OVARY wall hilum outer INTEGUMENT of ovule funicle Answer :C

Discussion

7006.	Question : The bulliform cells are
Answer» SMALL EMPTY pigmented Cortical cells Answer :B

Discussion

7007.	Question : Test tube baby means a baby born when:
Answer» It is developed in a test tube It develops from a non-FERTILIZED egg The OVUM is fertilized EXTERNALLY and thereafter implanted in uterus It is developed by TISSUE CULTURE method Answer :C

Discussion

7008.	Question : The bulk body of lichen is formed by _______ and the protective body covering is formed by __________.
Answer» AUTOTROPHIC, hetertrophic component fungus, algae phycobiont, mycobiont mycobiont, hetertroph Answer :D

Discussion

7009.	Question : Test tube baby means and baby is born when :
Answer» It is developed in a TEST tube It develops from a non-fertilized egg The ovum is fertilized EXTERNALLY and THEREAFTER inplanted in uterus It is developed by TISSUE culture method Answer :C

Discussion

7010.	Question : Test tube baby is a technique where:Zygote is taken from ovary, cultured then Implanted in the uterus.Ovum is taken from ovary, then fertilizedoutside and then implanted in the uterus.Sperm and ovum are fertilized and grow in the test tube.None of the above
Answer» ZYGOTE is taicen from OVARY, cultured then Implanted in the uterus. Ovum is taken from ovary, then FERTILIZED OUTSIDE and then implanted in the uterus. Sperm and ovum are fertilized and grow in the test tube. None of the above Answer :B

Discussion

7011.	Question : The bulb stores food in fleshy____
Answer» ANSWER :SCALE LEAVES

Discussion

7012.	Question : test tube baby programme employs
Answer» intracytoplasmic SPERM injection zygote intrafallopian TRANSFER intrauterine insemination gamete intrafallopian transfer ANSWER :C

Discussion

7013.	Question : The bubbles evolved during experiment with Hydrilla in a Wilmott's bubbler is____
Answer» ANSWER :OXYGEN

Discussion

7014.	Question : ……..test is done to confirm typhoid.
Answer» ELISA Western BLOT WIDAL test Southern blot Answer :A::D

Discussion

7015.	Question : The Bt toxin is not human beings because
Answer» the PRO Bt toxin activationrequires temperature above human body temperature the Bt toxin RECOGNISES only insect-specific targets the pro Bt toxin ACTIVATION requires pH lower than that present in human stomach conversion of pro Bt toxinto Bt toxin takes place in HIGHLY ALKALINE conditions. Solution :Conversion of pro Bt toxin to Bt toxin placce in highly alkaline conditions which are not present in human stomach. Human stomach is acidic in nature

Discussion

7016.	Question : The brood pouch in female cockroach is formed by
Answer» 7th, 8TH and 9th sterna 9th sternum, 9th and 10th terga 6th, 8th and 9th sterna 9th TERGUM, 8th and 9th sterna Answer :A

Discussion

7017.	Question : Test cross is a cross between :
Answer» hybrid `xx` DOMINANT PARENT hybrid `xx` recessive parent hybrid `xx` hybrid parent two distantly related SPICES Answer :B

Discussion

7018.	Question : The broilers are birds raised for
Answer» FEATHERS eggs cock FIGHTING MEAT ANSWER :D

Discussion

7019.	Question : The Broca's area and Wernicke's centre are the aasociation areas situated in cerebrum. These are associated with
Answer» VISION posture memory language. Answer :D

Discussion

7020.	Question : Test cross is a back cross but cross is not necessarily a test cross.
Answer» Solution :(1) In a monohybrid cross between pure tall and pure dwarf, all `F _(1)` hybrids will be tall with the GENOTYPE Tt. (2) In order to verify the genotype, when they are crossed with their recessive parent, the progeny will 50% tall and 50% dwarf. This is because the recessive parent will produce only one TYPE of gamete, i.e. t and the hybrid tall will produce two types of gametes, T and t. Therefore half the progeny will have the genotype Tt and half will have tt. Thus dominant and recessive plants will be in the ratio of 1 : 1. This is called a test cross ratio. (3) The cross between `F_(1)` hybrid and homozygous tall plant is also a BACK cross, but this cross will produce all tall plants, 50% pure tall and 50% hybrid tall. From this it is obvious that back cross with the dominant parent cannot be used for testing the genotype. (4) Thus, a test cross is a back cross but back cross is not NECESSARILY a test cross.

Discussion

7021.	Question : The breeding of the unrelated animals which may be between individuals of the same breed (but having no common ancestors) or between different breeds or different species is known as:
Answer» out-breeding out-crossing cross-breeding interspecific HYBRIDIZATION SOLUTION :N//A

Discussion

7022.	Question :Test cross is a cross between :
Answer» Crossing between two GENOTYPES with dominant traits Crossing between two genotypes with RECESSIVE traits Crossing between two `F_1` hybrids Crossing the `F_1` hybrid with a DOUBLE recessivegenotype Answer :D

Discussion

7023.	Question : Test cross involves
Answer» CROSSING between TWO genotypes with RECESSIVE trait Crossing between two `F_1` hybrids Crossing between two `F_1` hybrids with a double recessive genotype Crossing between two genotypes with dominant trait Answer :C

Discussion

7024.	Question : The brief contraction of all the muscle fibres in a motor unit in response to a single action potential in its motor neuron is called
Answer» MUSCLE tone treppe RIGOR MORTIS muscle twitch Answer :D

Discussion

7025.	Question : Terristrial life would become impossible with
Answer» CHANGE in orbit of earth Change in ATMOSPHERE permitting all solar RADIATIONS to reach lithosphere Disappearance of moon Decrease in mean ANNUAL temperature by `10℃`. Answer :D

Discussion

7026.	Question : The breeds of sheep which give good quality wool are
Answer» LOHI and Nellore Rampur and Deccini Nellore and Deccini NALI and Lohi Solution :Lohi and Nali GIVES the SUITABLE wool for carpet MAKING.

Discussion

7027.	Question : Termination of pregnancy / abortion and contraception.
Answer» SOLUTION :Termination of pregnancy / abortion : before full term naturally or birth with the help of a DOCTOR. Contraception : Physical METHOD used to avoid pregnancy during COITUS by couple.

Discussion

7028.	Question : The breed of chicken reared for eggs is called -
Answer» Broiler Deoni Murrah LAYER Solution :Layer

Discussion

7029.	Question : Termination codons are called Ochre,Amber and _____.
Answer» ANSWER :OPEL

Discussion

7030.	Question : Rate of breathing in an adult human is
Answer» 12-16 TIMES/second 12-16 times/ minute 12-18 times/ second 18-20 times/ minute Answer :B

Discussion

7031.	Question : Termination codon which stops further addition of amino acids to the polypeptide chain is :
Answer» AAU GUG AUG UAG Answer :D

Discussion

7032.	Question : The branch which deals with scientific enquiry of life in outer space is known as
Answer» PALAEOBOTANY exobiology INVESTIGATIVE BIOLOGY cytology Answer :B

Discussion

7033.	Question : Termination codon is :
Answer» AUG UGA AAU AUA Answer :A

Discussion

7034.	Question : The brain capacities of homoerectus was …….
Answer» 650-800 CC 1400 CC 900 CC 1200 CC Answer :C

Discussion

7035.	Question : Terminal meiosis occurs in:-
Answer» Sporocyte Gametocyte ZYGOTE Gamete Answer :B

Discussion

7036.	Question : The brain capacityof Homo erectus was about
Answer» 650 c.c. 900 c.c. 1500 c.c. 1400 c.c. Solution :HOMO erectus apperaed about 1.7 milion years ago in MIDDLE Pleistocene. Its brain capacity was about 900 c.c. He was about 1.5-1.8 m TALL having ERECT POSTURE.

Discussion

7037.	Question : Terminal oxidation in ETS is
Answer» STOPPAGE of oxidation final RELEASE of protons only STEP where actual oxidation USING `O_2` occurs ETS initiation Answer :C

Discussion

7038.	Question : The brain capacity of Homo erectus was
Answer» 800 CC 900 cc 1200 cc 1400 cc Solution :900 cc

Discussion

7039.	Question : Term wet deposition and dry deposition is generally used for :
Answer» Deposition of soil Deposition of organic MATTER in lake `CO_(2)` ACCUMULATION (green house effect) Acid rain Answer :D

Discussion

7040.	Question : Name the bract covering the spadix.
Answer» ANSWER :SPATHE

Discussion

7041.	Question : Term used to describe non-dominant species that dictate community structure is:
Answer» PIONEER SPECIES exogenous species keytone species TRANSITIONAL species Answer :C

Discussion

7042.	Question : The bottom most zone of a pond is termed as…........... .
Answer» a) LIMNETIC ZONE b) LITTORAL zone c) Benthic zone d) Profundal zone Answer :C

Discussion

7043.	Question : Term 'Pure line' was coined by
Answer» Mendel Johannsen Bateson T.H. Morgan Answer :B

Discussion

7044.	Question : The book origin of species was written by A.I. oparin.
Answer» ANSWER :DARWIN

Discussion

7045.	Question : _____term is used to express production of scanty urine.
Answer» ANSWER :OLIGURIA

Discussion

7046.	Question : The book 'Genetics and origin of Species'was written by_____.
Answer» ANSWER :DOBZHANSKY

Discussion

7047.	Question : Term_____ describes the remains of plants and animals in the form of rocks.
Answer» ANSWER :FOSSIL

Discussion

7048.	Question : The bones offorelimbs ofwhale, bat, cheetah and man are similar in structure, because
Answer» one ORGANISM has given rise to another they SHARE a common ancestor they perform the same FUNCTION the have biochemical similarities Solution :Organs having same origin but different functions are called homologous organs. For example, whales, bats, Cheetah and human (all mammals) share similarities in the pattern of bones of FORELIMBS. Homology indicates common ancestry. Option (A) is a basis for theory of BIOGENESIS. Option (C) is invalid as they are not performing same function. Option (D) can not be true.

Discussion

7049.	Question : The bones of forelimbs of whale, bat, cheetah and man are similar in structure because
Answer» one organism has given rise to another they share a common ancestor they perfrom the same function the have biochemical similarities. Solution :The BONES of forelimbs of whae, BAT, cheetah and man are similar in structure, because they are homolgous organs. The organs which have the same fundamental structure but are different in fucntions are called homologous organs. These organs follow the same basic plan of organisation organs are modified to perform different FUNCTIONS as an adaptationto different environments. The homologous stuctrues are a result of divergent evolution. Homology INDICATES common ancestry.

Discussion

7050.	Question : Term 'biocoenosis' was coined by:
Answer» KARL Mobius Charles Darwin E.P. Odum E.Haeckel Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : The C_4 plants are photosynthetically more efficient than C_3 plants because :

Question : testcross is used to

Question : The C4 molecules , formed after the CO_(2) fixation by CAM plants , are stored in :

Question : Testcross is a cross betweena) Hybrid x Dominant parentb) Hybrid x Recessive parentc) Hybrid x Hybrid parentd) Two distantly related species

Question : Testa of a seed is produced from(A) ovary wall(B) hilum(C) outer integument of ovule(D) funicle

Question : The bulliform cells are

Question : Test tube baby means a baby born when:

Question : The bulk body of lichen is formed by _______ and the protective body covering is formed by __________.

Question : Test tube baby means and baby is born when :

Question : Test tube baby is a technique where:Zygote is taken from ovary, cultured then Implanted in the uterus.Ovum is taken from ovary, then fertilizedoutside and then implanted in the uterus.Sperm and ovum are fertilized and grow in the test tube.None of the above

Question : The bulb stores food in fleshy____

Question : test tube baby programme employs

Question : The bubbles evolved during experiment with Hydrilla in a Wilmott's bubbler is____

Question : ……..test is done to confirm typhoid.

Question : The Bt toxin is not human beings because

Question : The brood pouch in female cockroach is formed by

Question : Test cross is a cross between :

Question : The broilers are birds raised for

Question : The Broca's area and Wernicke's centre are the aasociation areas situated in cerebrum. These are associated with

Question : Test cross is a back cross but cross is not necessarily a test cross.

Question : The breeding of the unrelated animals which may be between individuals of the same breed (but having no common ancestors) or between different breeds or different species is known as:

Question :Test cross is a cross between :

Question : Test cross involves

Question : The brief contraction of all the muscle fibres in a motor unit in response to a single action potential in its motor neuron is called

Question : Terristrial life would become impossible with

Question : The breeds of sheep which give good quality wool are

Question : Termination of pregnancy / abortion and contraception.

Question : The breed of chicken reared for eggs is called -

Question : Termination codons are called Ochre,Amber and _____.

Question : Rate of breathing in an adult human is

Question : Termination codon which stops further addition of amino acids to the polypeptide chain is :

Question : The branch which deals with scientific enquiry of life in outer space is known as

Question : Termination codon is :

Question : The brain capacities of homoerectus was …….

Question : Terminal meiosis occurs in:-

Question : The brain capacityof Homo erectus was about

Question : Terminal oxidation in ETS is

Question : The brain capacity of Homo erectus was

Question : Term wet deposition and dry deposition is generally used for :

Question : Name the bract covering the spadix.

Question : Term used to describe non-dominant species that dictate community structure is:

Question : The bottom most zone of a pond is termed as…........... .

Question : Term 'Pure line' was coined by

Question : The book origin of species was written by A.I. oparin.

Question : _____term is used to express production of scanty urine.

Question : The book 'Genetics and origin of Species'was written by_____.

Question : Term_____ describes the remains of plants and animals in the form of rocks.

Question : The bones offorelimbs ofwhale, bat, cheetah and man are similar in structure, because

Question : The bones of forelimbs of whale, bat, cheetah and man are similar in structure because

Question : Term 'biocoenosis' was coined by:

Question : The bulk body of lichen is formed by _ and the protective body covering is formed by ____.