24277 + Interview Questions in Biology in Class 12 Page 128 InterviewSolution

6351.	Question : Thefertilizer named ' Nitrogen ' is prepared by the use of :
Answer» N+P+K `CaC_(3)+P` `CaC_(2)+N_(2)` None of these Answer :C

Discussion

6352.	Question : The fertilized eggs of reptile and birds are covered with calcareous shell. Due to this the zygote passes from which phase ?(A) Growth phase(B) Vegetative phase(C) Development phase(D) Incubation phase
Answer» Growth phase Vegetative phase DEVELOPMENT phase INCUBATION phase ANSWER :D

Discussion

6353.	Question : The fertilization cone that pulls the sperm into the egg is formed from the –
Answer» ACROSOME of sperm Acrosomal process Vitelline LAYERS of the egg Plasma MEMBRANE of the egg Answer :D

Discussion

6354.	Question : The fertilization in which male gametes are carried through pollen tube , is known as
Answer» SYNGAMY POROGAMY SIPHONOGAMY Chalazogamy Answer :C

Discussion

6355.	Question : The fertile haploid male honey bees are called what ?
Answer» ANSWER :DRONE

Discussion

6356.	Question : The fertile female honey bees are called what ?
Answer» ANSWER :QUEENS

Discussion

6357.	Question : Which one is female gametophyte?
Answer» CARPEL OVULE EMBRYO sac Egg Answer :C

Discussion

6358.	Question : The female gametophyte in angiosperms is a ……….. Nucleated structure.
Answer» 3 4 5 8 Answer :D

Discussion

6359.	Question : The female Ascaris is distinguished from the male by the absence of
Answer» tail separate GENITAL APERTURE pre-anal papilla Dioecious Answer :D

Discussion

6360.	Question : Fatty liver syndrome is due to excessive intake of
Answer» tobacco alcohol aspirin morphine Answer :B

Discussion

6361.	Question : The fate of germ layers is the same in all triploblastic animals. Why?
Answer» SOLUTION :There is a close relationship AMONG all triploblastic animals due to their EVOLUTION from a COMMON ancestor.

Discussion

6362.	Question : The famous cell theory was proposed by
Answer» ANSWER :SCHLEIDEN and SCHWANN

Discussion

6363.	Question : The family of queen victoria shows a number of haemophilic descendents as she was the carrier of the diseases. Name the pattern of inheritance of this royal diseases.
Answer» SOLUTION :Criss-cross INHERITANCE- Transmission of diseases from father to daughter to grandson. It is sex-linked RECESSIVE BLOOD diseases

Discussion

6364.	Question : The family planning program me in india were initiated in.
Answer» 1951 1961 1971 1981 Answer :A

Discussion

6365.	Question : The factors which harm crops in field of agriculture are normally considered as .....(A) Germs(B) Pests(C) Insects(D) Weeds
Answer» GERMS PESTS INSECTS WEEDS SOLUTION :Pests

Discussion

6366.	Question : The factors which affects percolation and water holding capacity of soil
Answer» GRAIN SIZE SOIL Composition Aggretion All of these ANSWER :D

Discussion

6367.	Question : The factors involved in the formation of new species are
Answer» ISOLATION and GENE FLOW gene flow and competition competition and MUTATION isolation and variation Answer :D

Discussion

6368.	Question : The fact that a purine base always pairs through hydrogen bonds with a pyrimidine base In the DNA double helix leads to
Answer» the ANTIPARALLEL nature the semiconservative nature uniform width throughout DNA uniform LENGTH in all DNA Solution :uniform width throughout DNA A purine base always paired through hydrogen bonds with a PYRIMIDINE base leads to, in the DNA double HELIX, uniform width throughout DNA.

Discussion

6369.	Question : The factor most important for living organisms is:
Answer» Water Light Humidity Temperature Solution :Water CONSTITUTES about `80%` of protoplasm, it is the most IMPORTANT factor for living organisms.

Discussion

6370.	Question : The factor responsible for cirrhosis is
Answer» Alcoholism Sugars Fats and Oils Vitamins Answer :A

Discussion

6371.	Question : The factor causing cancer is called .........
Answer» tumors virus CARCINOGENS NONE of these Solution :carcinogens

Discussion

6372.	Question : The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to , in the DNA double helix :
Answer» The ANTIPARALLEL nature The semiconservative nature Uniform WIDTH THROUGHOUT DNA Uniform LENGTH in all DNA Answer :C

Discussion

6373.	Question : The fact that purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix:
Answer» the ANTIPARALLEL helix the semi-conservative nature uniform width throughout DNA uniform LENGTH in all DNA Answer :C

Discussion

6374.	Question : The F2-generation offspring in a plant showing incomplete dominance, exhibit
Answer» VARIABLE genotypic and PHENOTYPIC RATIO a genotypic ratio of 1 :1 a phenotypic ratio of 3:1 similar genotypic and phenotypic ratio of 1:2: 1 Answer :D

Discussion

6375.	Question : The F_2genotypic ratio of monohybrid cross is
Answer» `1:1` `1:2:1` `2:1:2` `9:3:3:1` ANSWER :B

Discussion

6376.	Question : The F_2 genotype ratio of monohybrid cross is :
Answer» `1:1` `2:1:1` `1:2:1` `9:3:3:1` ANSWER :C

Discussion

6377.	Question : The F_2 generation offspring in a plant showing incomplete dominance exhibit :
Answer» Variable genotype and phenotypic ratios A genotypic RATIO of 1 :1 A phenotypic ratio of 3:1 SIMILAR phenotypic and genotypic ratio of 1 : 2 :1 Answer :D

Discussion

6378.	Question : The "eyes "of the potato tubers are :
Answer» ROOT buds FLOWER buds SHOOT buds AUXILIARY buds ANSWER :D

Discussion

6379.	Question : The eyes of Octopus and eyes of cat show different patterns of structure, yet they perform similar function. This is an example of
Answer» HOMOLOGOUS organs that have evolved due to CONVERGENT evolution homologous organs that have evolved due to DIVERGENT evolution ANALOGOUS organs that have evolved due to convergent evolution analogous organs that have evolved due to divergent evolution Solution :analogous organs that have evolved due to convergent evolution

Discussion

6380.	Question : The "eyes" of the potato tuber are
Answer» ROOT buds Flower buds Shootbuds Axillary buds Answer :D

Discussion

6381.	Question : The eyes of potato tuber are
Answer» SHOOT buds Axillary Root buds Flower buds Answer :B

Discussion

6382.	Question : The eye of octopus and eye of cat show different patterns ofof structure, yetthey peform similar . Thisis an example of :
Answer» HOMOLOGOUS organsthathaveevolveddue to convergent evolution. homologours ORGANS that haveevolveddue to divergent evolutoin ANALOGOUS organs that have evolvedduetoconvergentevoluiton Analogousorgans that haveevolveddue to divergentevolution . Answer :C

Discussion

6383.	Question : The extraction of DNA from gel is called as
Answer» SPOOLING ELUTION AGE ANNEALING SOLUTION :Elution

Discussion

6384.	Question : the extinction of Steller's sea cow is due to
Answer» OVEREXPLOITATION alien SPECIES invasion habitat LOSS and FRAGMENTATION co extinctions Answer :A

Discussion

6385.	Question : The extinction of passenger pigeon was due to
Answer» Increased NUMBER of predatory birds. Over-exploitation by humans. Non-availability of the food. Bird flu virus infection. Solution :Over exploitation by humans. Humans have always depended on nature for food and shelter but when .need. turns to .GREED. it leads to over-exploitation of NATURAL RESOURCES. In the last 500 years many species. (e.g. Steller.s sea COW, passenger.s pigeon) extinction was due to over-exploitation by human.

Discussion

6386.	Question : The extinction of passenger pigeon was due to :
Answer» INCREASED NUMBEROF predatorybirds OVEREXPLOITATION by humans. Non - availability of the FOOD Bird fluvirus infection. Answer :B

Discussion

6387.	Question : The extinct human who lived 1,00,000 to 40,000 yearsago , in Eurpose, Asia and partsof Africawithshort stature ,heavy eye brows , retreatingfore heads , largejawswith heavy teeth , stockybodies , a lunbering agati and stopped posture was :
Answer» CRO- MAGNON HUMANS Ramapithecus Homo habilis Neanderthal HUMAN ANSWER :D

Discussion

6388.	Question : The extinction of cichlid fish in the lake is due to
Answer» HABITAT LOSS and FRAGMENTATION over exploitation Alien SPECIES invansion Co-extinctions Answer :C

Discussion

6389.	Question : The extinct humans who lived 1,00,000 to 40,000 years ago, in East and central Asia, used hides to protect their bodies and had brain capacity of 1400 c.c. were
Answer» HOMO HABILIS Neanderthal MAN Cro-Magnon man Ramapithecus. SOLUTION :N//A

Discussion

6390.	Question : The extinct human who lived 1,00,000 to 40,000 years a go in Europe Asia and parts of Africa with short stature heavy eye brows retreating fore heads large jaws with heavyteeth stocky bodies a lumbering gait and stopped posture was:
Answer» NEANDERTHAL HUMAN Cro-Magnon humans Ramapithecus Homo habilis Answer :A

Discussion

6391.	Question : The extinct human ancestor, who are only fruits and hunted with stone weapons was
Answer» Ramapithecus Australopithecus Dryopithecus Homo erectus. Solution :Australopithecus probable LIVED in East African grasslands about 2 milion years ago. They HUNTED with stone weapons but esentially are fruit. They were about 1.5 m high and their brain capacity was about500c.c. they had bipedal LOCOMOTION and erect POSTURE.

Discussion

6392.	Question : The extinct human ancestor, who ate only fruits and hunted with stone weapons was
Answer» RAMAPITHECUS Dryopithecus Homo erectus Homo HABILIS , ANSWER :D

Discussion

6393.	Question : The external photosynthetic factor that influences the process more through plant rather directly on photosynthesis is
Answer» `CO_2` WATER LIGHT TEMPERATURE ANSWER :B

Discussion

6394.	Question : The external layer of connective tissue sheath of human testis is
Answer» TUNICA vasculosa tunica vaginalis tunica granulosa tunica albuginea Answer :B

Discussion

6395.	Question : The expression of genes is regulated by
Answer» METABOLIC conditions physiological conditions environmental conditions all of the above Answer :D

Discussion

6396.	Question : The experimental proof for the theory of inheritance was provided by the studies on
Answer» pisum oenothera lathyrus fruit flies Answer :D

Discussion

6397.	Question : The expressed sequences in processed RNA are called
Answer» HnRNA Snurps Sense strands Exons Answer :D

Discussion

6398.	Question : The experiments of Miller and Urey enhanced the validity of Oparin's theory on the origin of life . They essentially
Answer» discharged electricity into a medium consisting of water vapour , methane , ammonia , and hydrogen were able to produce simple viruses were able to produce a simple form of living organism after placing DNA in mixture of hydrogen and oxygen and irradiating it were able to produce bacteria Solution :The mystery of the origin of life still eludes US. Two basic concepts are PROPOSED: 1. Vitalistic - a vital force created life, 2. Mechanistic - forces of nature were instrumental. Oparin suggested that the primitive atmosphere was made up of gases like methane, ammonia, hydrogen, and water vapor. Miller discharged electricity through the above environment and found after a week, a variety of organic compounds, including AMINO acids were produced. Combinations of these then could theoretically have led to the build-up of COMPLEX molecules and eventually protoplasm.

Discussion

6399.	Question : The exponential growth is maximum in :
Answer» TISSUE CULTURE cells Embryo UNICELLULAR ORGANISMS Multicellular organisms Answer :A

Discussion

6400.	Question : the experiment, which demonstrates that xylem is the main water conducting tissue is I. stain test. II.bottleneck experiment. III. Ringing test. IV. Swan bottleneck experiment.
Answer» I and III I and IV II, III and IV All of these Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : Thefertilizer named ' Nitrogen ' is prepared by the use of :

Question : The fertilized eggs of reptile and birds are covered with calcareous shell. Due to this the zygote passes from which phase ?(A) Growth phase(B) Vegetative phase(C) Development phase(D) Incubation phase

Question : The fertilization cone that pulls the sperm into the egg is formed from the –

Question : The fertilization in which male gametes are carried through pollen tube , is known as

Question : The fertile haploid male honey bees are called what ?

Question : The fertile female honey bees are called what ?

Question : Which one is female gametophyte?

Question : The female gametophyte in angiosperms is a ……….. Nucleated structure.

Question : The female Ascaris is distinguished from the male by the absence of

Question : Fatty liver syndrome is due to excessive intake of

Question : The fate of germ layers is the same in all triploblastic animals. Why?

Question : The famous cell theory was proposed by

Question : The family of queen victoria shows a number of haemophilic descendents as she was the carrier of the diseases. Name the pattern of inheritance of this royal diseases.

Question : The family planning program me in india were initiated in.

Question : The factors which harm crops in field of agriculture are normally considered as .....(A) Germs(B) Pests(C) Insects(D) Weeds

Question : The factors which affects percolation and water holding capacity of soil

Question : The factors involved in the formation of new species are

Question : The fact that a purine base always pairs through hydrogen bonds with a pyrimidine base In the DNA double helix leads to

Question : The factor most important for living organisms is:

Question : The factor responsible for cirrhosis is

Question : The factor causing cancer is called .........

Question : The fact that a purine base always paired through hydrogen bonds with a pyrimidine base leads to , in the DNA double helix :

Question : The fact that purine base always paired through hydrogen bonds with a pyrimidine base leads to, in the DNA double helix:

Question : The F2-generation offspring in a plant showing incomplete dominance, exhibit

Question : The F_2genotypic ratio of monohybrid cross is

Question : The F_2 genotype ratio of monohybrid cross is :

Question : The F_2 generation offspring in a plant showing incomplete dominance exhibit :

Question : The "eyes "of the potato tubers are :

Question : The eyes of Octopus and eyes of cat show different patterns of structure, yet they perform similar function. This is an example of

Question : The "eyes" of the potato tuber are

Question : The eyes of potato tuber are

Question : The eye of octopus and eye of cat show different patterns ofof structure, yetthey peform similar . Thisis an example of :

Question : The extraction of DNA from gel is called as

Question : the extinction of Steller's sea cow is due to

Question : The extinction of passenger pigeon was due to

Question : The extinction of passenger pigeon was due to :

Question : The extinct human who lived 1,00,000 to 40,000 yearsago , in Eurpose, Asia and partsof Africawithshort stature ,heavy eye brows , retreatingfore heads , largejawswith heavy teeth , stockybodies , a lunbering agati and stopped posture was :

Question : The extinction of cichlid fish in the lake is due to

Question : The extinct humans who lived 1,00,000 to 40,000 years ago, in East and central Asia, used hides to protect their bodies and had brain capacity of 1400 c.c. were

Question : The extinct human who lived 1,00,000 to 40,000 years a go in Europe Asia and parts of Africa with short stature heavy eye brows retreating fore heads large jaws with heavyteeth stocky bodies a lumbering gait and stopped posture was:

Question : The extinct human ancestor, who are only fruits and hunted with stone weapons was

Question : The extinct human ancestor, who ate only fruits and hunted with stone weapons was

Question : The external photosynthetic factor that influences the process more through plant rather directly on photosynthesis is

Question : The external layer of connective tissue sheath of human testis is

Question : The expression of genes is regulated by

Question : The experimental proof for the theory of inheritance was provided by the studies on

Question : The expressed sequences in processed RNA are called

Question : The experiments of Miller and Urey enhanced the validity of Oparin's theory on the origin of life . They essentially

Question : The exponential growth is maximum in :

Question : the experiment, which demonstrates that xylem is the main water conducting tissue is I. stain test. II.bottleneck experiment. III. Ringing test. IV. Swan bottleneck experiment.