24277 + Interview Questions in Biology in Class 12 Page 447 InterviewSolution

22301.	Question : 'Allele frequency in a population are stable and is constant from generation to generation. Name this equilibrium.
Answer» SOLUTION :Hardy-Weinberg EQUILIBRIUM

Discussion

22302.	Question : 'Allele frequency in a population are stable and is constant from generation to generation. Mention two factors which affect this equilibrium.
Answer» SOLUTION :GENE MIGRATION,GENETIC DRIFT.

Discussion

22303.	Question : All viruses
Answer» CONTAIN only DNA contain only RNA contain only protein are SUSCEPTIBLE to lipid SOLVENTS ANSWER :C

Discussion

22304.	Question : All types of food are digested by:
Answer» Dehydration Hydrolysis Activation Desalination Answer :B

Discussion

22305.	Question : All tissues which occur outside the innermost cork cambium are collectively termed as ?
Answer» Periderm Phellogen Phelloderm Rhytidome Answer :D

Discussion

22306.	Question : All tissues exterior to vascular cambium is called bark which indudes
Answer» PHELLOGEN + SECONDARY xylem Periderm + secondary xylem Periderm + secondary phloem Cork CAMBIUM + PRIMARY xylem Answer :C

Discussion

22307.	Question : All the plants of a clone are similar both in_____ and ______.
Answer» SOLUTION :GENOTYPE,PHENOTYPE

Discussion

22308.	Question : All the termination codons begin with the nucleotide of :
Answer» Adenine Uracil Guanine Cytosine Answer :B

Discussion

22309.	Question : All the photosynthetic pigmentsare located in _____ membrane of chloroplasts.
Answer» ANSWER :THYLAKOID

Discussion

22310.	Question : All the given statements w.r.t. flower are correct, expect
Answer» It is a MODIFIED shoot It is a REPRODUCTIVE UNIT of angiosperms It is trimerous in potato family Calyx and corolla are ACCESSORY WHORLS of a flower Answer :C

Discussion

22311.	Question : All the genes contained in a haploid uncleus is called as :
Answer» GENE pool allele genome operon Answer :C

Discussion

22312.	Question : all the followings are proper plans for increasing agricultural production except
Answer» expansion of IRRIGATION facilities increase of APPLICATION of fertilizers cutting forest to add LAND for cultivation mechanization of the VARIOUS aspects of farming Answer :C

Discussion

22313.	Question : All the following statement about the sturcture of glycogen are true except.
Answer» branched chains occur after every ten residues it is a COPOLYMER of glucose and mannose it contains `alpha` -, 4-glycosidic linkages it contains `alpha`-1 6- glycosidic linkages Answer :B

Discussion

22314.	Question : All the following contribute to pollution except-
Answer» THERMAL POWER PLANT Automobiles Nuclear power plant HYDROELECTRIC power project. Answer :D

Discussion

22315.	Question : all the floets are disc florets in
Answer» launea vernonia sunflower tridax Answer :B

Discussion

22316.	Question : All the body cells are of same origin and therefore, have same genes, yet they differ in structure and function because they synthesize different
Answer» histones ribosomes MRNA MOLECULE TRNA molecules Answer :C

Discussion

22317.	Question :All the above
Answer» `ALPHA` - AA `BETA`- AA `gamma` - AA All the THREE types Answer :A

Discussion

22318.	Question : All sponges without any exception are
Answer» Sessile Aquaic Asymmetric Both (1) & (2) ANSWER :D

Discussion

22319.	Question : All sensory information to be registered conciously by the forebrain must pass via the
Answer» THALAMUS RETICULAR FORMATION CEREBELLUM pons Answer :A

Discussion

22320.	Question :All reproductive tract infections RTIs are STDs, but all STDs are not RTIS. Justify with example.
Answer» Solution : NORMAL sexually transmitted diseases Hepatitis B and AIDS are not the DISEASE caused in reproductive ORGANS. Sexual contact its responsible for their spread. Other diseases like Gonorrohea, syphilis, genital herpis and hepatitis are spread by sexual contact. They are infections of reproductive TRACT. So they STDs and RTIs. While AIDs and Hepatitis - B are STDs, but not RTI.

Discussion

22321.	Question : All seed bearing plants have diplontic life cycle, (e) Bryophytes have haplodiplontic life cycle
Answer» (a), (B),© ,(d),(E) all EXCEPT (d) all except © all except (b) ANSWER :D

Discussion

22322.	Question : All ribs are bicephalic which means
Answer» They articulate with both sternum and VERTEBRAL column They articulate with sternum only with two aticulation points They have two ARTICULATION points on dorsal side They have ONE articulation point on dorsal side and one on ventral side Answer :C

Discussion

22323.	Question : All populations is a given physical area are defined as
Answer» BIOME Ecosystem Territory BIOTIC factors SOLUTION :Biome

Discussion

22324.	Question : All organisms produce more young ones'. Comment.
Answer» Solution :"All organisms produce more young ones" because of the following reasons : (a) Organisms have GREAT POTENTIALS for reproduction and very few survive upto maturity due to which LARGE NUMBER of young ones are produced. (b) The organisms undergo intra and inter specific struggle for existence in which the nature selects the fittest ORGANISM and it survives.

Discussion

22325.	Question : All organisms produce more young ones.
Answer» Solution :1. All living organisms have a great potential for reproduction. 2. They produce more young ones because the chances of survival up to maturity are less. 3. POPULATIONS tend to increase in geometrical progression. 4. All of these lead to struggle for existence. There is interspecific struggle within the species whereas between the two different species there is interspecific struggle. All of organisms also FACE environmental struggle. Therefore, all organisms produce more young ones for assurance that their species is CONTINUED.

Discussion

22326.	Question : All of these are true w r t organ of Corti except
Answer» located on Reissner's MEMBRANE pressing of steroreocillia against tectonical membrane generates nerve impulses impulses are CARRIED to brain by cochlear branch of AUDITORY nerve it does not have any ROLE in balancing Answer :D

Discussion

22327.	Question : All of these have a positive influence on the growth of the population except
Answer» NATALITY FECUNDITY EMIGRATION Immigration Answer :C

Discussion

22328.	Question : All of the following would be found in a prokaryotic cell except :-
Answer» m-RNA r-RNA simultaneous TRANSCRIPTION and translation sn-RNA Answer :D

Discussion

22329.	Question : All of the following tissues are involved in secondary growth except
Answer» VASCULAR CAMBIUM LATERAL meristem Cork cambium APICAL meristem Answer :D

Discussion

22330.	Question : All of the following structures in the human skeleton are made up of a single bone except
Answer» LOWER JAW Hyoid UPPER jaw ZYGOMATIC arch Answer :C

Discussion

22331.	Question : All of the following statements are currect for guard cell except
Answer» BEAN shaped in DICOTS Are GREEN Dumb-bell shaped in grasses Outer we is are thick and the INNER walls are thin Answer :D

Discussion

22332.	Question : All of the following statements are correct, expect
Answer» RCBs of human are not capable of metabolising GLUCOSE to carbon dioxide aerobically No mixing of blood occurs in heart of a fish With increase in heart rate, duration of a single cardiac cycle decreases Pacemaker of human heart is a specialised NEURAL TISSUE which maintains rhythmic activity of heart Answer :D

Discussion

22333.	Question : All of the following plants have fused pistils in their flowers, except
Answer» Papaver Hibiscus Aloe Michelia Solution :In a TEST cross , individual showing dominant phenotype is crossed with recessive parent A dihybrid test cross canhelp in determining linkage between TWO trails. A test cross PRODUCES equal number of genotypes and PHENOTYPES . Two different species do not INTERBREED so their interbreeding ability cannot be determined by test cross.

Discussion

22334.	Question : All of the following statement are correct except.
Answer» In Balanoglossus,EXCRETION TAKES place through proboscis gland All VERTEBRATES are chordates but all chordates are not vertebrates Placoid scales are found in Osteichthyes Mammary glands are defining CHARACTER of all mammals Answer :B

Discussion

22335.	Question : All of the following pairs of hormones are antagonistic, expect
Answer» CALCITONIN and parathormone Cortisol and insulin Insulin and glucagon Calcitriol and Collip's hormone Answer :D

Discussion

22336.	Question : All of the following hormones are involved in sugar metabolism, expect
Answer» Glucagon Cortisone Thymosin Insulin Answer :C

Discussion

22337.	Question : All of the following form the basis of DNA fingerprinting, except
Answer» DEGREE of polymorphism VNTR Minisatellite ESTs Answer :D

Discussion

22338.	Question : All of the following are under regulation of sympathetic and parasympathetic nervous systems except
Answer» HEART rate Digestive TRACT activity Learning Micturition Answer :C

Discussion

22339.	Question : All of the following are transcribed from DNA except
Answer» EXONS INTRONS RRNA DNA ANSWER :D

Discussion

22340.	Question : All of the following are the true for virus replicationexcept
Answer» only a subset of VIRUSES contains all of the ENZYMES necessaryfor transcribingtheir owngenome no virusescontainthe tRNAnecessary to TRANSLATE mRNA virusescan makeribosomes necessaryto translatemRNA once a VIRUS has entered a cell, it cannotbeginmakingcopies of itselfimmediately Answer :C

Discussion

22341.	Question : All of the following are part of an operon except
Answer» a promoter an operator an ENHANCER structural GENES SOLUTION :an enhancer

Discussion

22342.	Question : all of the following are highly productive ecosystems except
Answer» CORAL reefs sugarcan fields tropical rainforest Deserts Answer :D

Discussion

22343.	Question : All of the following are included in 'Ex-situ conservation' except
Answer» SEED BANKS Wildlife safari parks Botanical gardens SACRED GROVES SOLUTION :Seed banks

Discussion

22344.	Question : All of the following are haploid with 23 chromosomes except
Answer» FIRST POLAR body Second polar body Primary oocyte Secondary oocyte Answer :C

Discussion

22345.	Question : All mammals have
Answer» MAMMARY gland Diaphragm Vertebrae All of these Answer :D

Discussion

22346.	Question : All life formscontain "molecules of life ". These are
Answer» CARBOHYDRATES Proteins NUCLEIC acids All of these Solution :The BASIC TYPESOF moleculesare carbohydrates, lipids, proteins and nucleic acids.

Discussion

22347.	Question : All individuals produced are genetically identical
Answer» clone off spring fission moneociuos Answer :A

Discussion

22348.	Question : All Gymnosperms are :-
Answer» HETEROSPOROUS ARBORESCENT SEED PLANTS All the above ANSWER :D

Discussion

22349.	Question : All given are dry schizocarpic fruits except :-
Answer» Lomentum CREMOCARP REGMA Silicula ANSWER :D

Discussion

22350.	Question : All genes located on the same chromosome
Answer» Form DIFFERENT groups depending upon their relative distance Form one linkage group Will not form any linkage groups Form interactive groups that affect the phenotype. Solution :A group can be defined as a group of linked gene (on the same CHROMOSOME) and corresponds to the genome of ORGANISM, like HUMAN has 23 linkage groups, pea and Neurospora has 7 linkage groups, Drosophila has 4 linkage groups. Linkage group in a species corresponds to its haploid number of chromosomes.

Discussion

Explore topic-wise InterviewSolutions in .

Question : 'Allele frequency in a population are stable and is constant from generation to generation. Name this equilibrium.

Question : 'Allele frequency in a population are stable and is constant from generation to generation. Mention two factors which affect this equilibrium.

Question : All viruses

Question : All types of food are digested by:

Question : All tissues which occur outside the innermost cork cambium are collectively termed as ?

Question : All tissues exterior to vascular cambium is called bark which indudes

Question : All the plants of a clone are similar both in_____ and ______.

Question : All the termination codons begin with the nucleotide of :

Question : All the photosynthetic pigmentsare located in _____ membrane of chloroplasts.

Question : All the given statements w.r.t. flower are correct, expect

Question : All the genes contained in a haploid uncleus is called as :

Question : all the followings are proper plans for increasing agricultural production except

Question : All the following statement about the sturcture of glycogen are true except.

Question : All the following contribute to pollution except-

Question : all the floets are disc florets in

Question : All the body cells are of same origin and therefore, have same genes, yet they differ in structure and function because they synthesize different

Question :All the above

Question : All sponges without any exception are

Question : All sensory information to be registered conciously by the forebrain must pass via the

Question :All reproductive tract infections RTIs are STDs, but all STDs are not RTIS. Justify with example.

Question : All seed bearing plants have diplontic life cycle, (e) Bryophytes have haplodiplontic life cycle

Question : All ribs are bicephalic which means

Question : All populations is a given physical area are defined as

Question : All organisms produce more young ones'. Comment.

Question : All organisms produce more young ones.

Question : All of these are true w r t organ of Corti except

Question : All of these have a positive influence on the growth of the population except

Question : All of the following would be found in a prokaryotic cell except :-

Question : All of the following tissues are involved in secondary growth except

Question : All of the following structures in the human skeleton are made up of a single bone except

Question : All of the following statements are currect for guard cell except

Question : All of the following statements are correct, expect

Question : All of the following plants have fused pistils in their flowers, except

Question : All of the following statement are correct except.

Question : All of the following pairs of hormones are antagonistic, expect

Question : All of the following hormones are involved in sugar metabolism, expect

Question : All of the following form the basis of DNA fingerprinting, except

Question : All of the following are under regulation of sympathetic and parasympathetic nervous systems except

Question : All of the following are transcribed from DNA except

Question : All of the following are the true for virus replicationexcept

Question : All of the following are part of an operon except

Question : all of the following are highly productive ecosystems except

Question : All of the following are included in 'Ex-situ conservation' except

Question : All of the following are haploid with 23 chromosomes except

Question : All mammals have

Question : All life formscontain "molecules of life ". These are

Question : All individuals produced are genetically identical

Question : All Gymnosperms are :-

Question : All given are dry schizocarpic fruits except :-

Question : All genes located on the same chromosome

Question : All the plants of a clone are similar both in_ and __.