24277 + Interview Questions in Biology in Class 12 Page 432 InterviewSolution

21551.	Question : Assertion (A) : Daphnia populations in a water body, at different seasons of an year showed market variations in their body morphology. Reason (R ) : Cyclomorphosis in some planktonic organisms is influenced by the variations in temperatures prevailing in their water bodies at different seasons.
Answer» Both (A) and (R ) are TRUE and (R ) is the correct explanation of (A) Both (A) and (R ) are true but (R ) is not the correct explanation of (A) (A) is true STATEMENT but (R ) is false Both (A) and (R ) are false Answer :A

Discussion

21552.	Question : Assertion (A): Dermatomycosis is a cutaneous infection. Reason (R ):Fungus belongs to the order Trichophyton.
Answer» Both (A) and (R are TRUE .(R) explains(A) (A) is true (R ) is false Both(A) is true (R ) are flase (A) is false (R ) is true Answer :A::B::D

Discussion

21553.	Question : Assertion (A) : Codominace is an example for intragenic interaction Reason (R) : Interaction take place between the alleles of same gene
Answer» A and R are CORRECT R EXPLAINS A A and R are INCORRECT A is correct R is incorrect A is incorrect R is correct ANSWER :A

Discussion

21554.	Question : Assertion (A) Chlorine is absorbed as Cl^(-) ions . Its precise role is not well known . However with Na^(+)andK^(+) , it help in determining solute concentration and anion - cation balance is clles.Reason (R ) Chlorine plays an important role in photosynthesisand takes part in the water splitting reaction ,thus releasing O_(2).
Answer» If both ASSERTION and REASON are TRUE and Reason is CORRECT EXPLANATION of Assertion. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason and false. Answer :A

Discussion

21555.	Question : Assertion (A) : Cytoplasmic male sterility is a Mendelian inheritance Reason (R) : The genes for cytoplasmic male sterility in peal maize is located at mitochondrial DNA
Answer» A and R are CORRECT R EXPLAINS A A and R are INCORRECT A is correct R is incorrect A is incorrect R is correct ANSWER :D

Discussion

21556.	Question : Assertion (A): Codeine causes addiction. Reason (R] : Codeine is an opium-derivative.
Answer» A and R are TRUE and R is the correct explanation of ASSERTION. A and R are true but R is not the correct explanation of assertion. A is true but R is FALSE. A is false but R is true. Solution :A and R are true but R is not the correct explanation of assertion.

Discussion

21557.	Question : Assertion (A): CO_2 , is a main cause for global warming Reason (R) : Greenhouse gases trap the radiant heat from sun
Answer» A is CORRECT R is incorrect. A is incorrect R is correct. R EXPLAINS A. Both A and R are incorrect Answer :C

Discussion

21558.	Question : Assertion (A) : Cattle feed should contain both roughage and concentrate . Reason (R) : Roughage of feed provides nutrients , while concentrate of food contains fibres .
Answer» Both A and R are correct and R is the correct EXPLANATION of A Both A and R are correct but R is not the correct explanation of A A is TRUE but R is FALSE A is false and R is true ANSWER :C

Discussion

21559.	Question : Assertion (A) : Carica papaya is a dioecious plant. Reason (R) : Both male and female are borne on same plant.
Answer» A is CORRECT R is incorrect R EXPLAINS A Both A and R are incorrect Both A and R are correct . R does not EXPLAIN R. Answer :A

Discussion

21560.	Question : Assertion : A change in nitrogen bass atthe third position of a codon causeschange in the expression of the codon. Reason : A codon is mostly read by all the three nitrogen bases.
Answer» If both assertion and REASON are true and reason is the correct explanation of assertion If both assertion and reason are true butreason is notthe correct explanation of assertion If assertion is true but reason is false if both assertion and reason are false. Solution :(d) : According to the WOBBLE hypothesis , only the FIRST TWO position of a triplet codon on mRNAhave a PRECISE pairing with the bases of the tRNAanticodon . The pairing of thethirdposition bases of the codon may be ambiguous and varies according to the nucleotide present in this position. Thus ,a single tRNA type is able to recognise twoor more codonsdiffering only in the third base. The same is called wobble position.

Discussion

21561.	Question : Assertion (A): Cervix is common site of ectopic pregnancies Reason (R): Implantation of fertilized ovum outside uterus.
Answer» (a)R EXPLAINS A. (b) A is right R is WRONG. (C) A and R are right. R does not explains A. (d) Both A and R are wrong. Solution :R explains A.

Discussion

21562.	Question : Assertion (A) : Capping protect the DNA from degradation. Reason (R) : Capping is followed by Tailing where 3' end of tRNA is cleaved.
Answer» ASSERTION is true and REASON is CORRECT explanation of Assertion. Assertion and Reason is true but Reason is not correct explanation of Assertion. Assertion is true and Reason is FALSE. Both Assertion and Reason are false. Answer :D

Discussion

21563.	Question : Assertion (A) : Bt cotton is genetically modified cotton with an insecticide activity against bollworm. Reason(R): Yield of cotton is increased due to effective control of bollworms
Answer» Both ASSERTION and REASON are true and Reason is correct EXPLANATION of Assertion . Both Assertion and Reason are true and Reason is not correct explanation of Assertion . Both Assertion and Reason are true . Both Assertion and Reason are false . SOLUTION :N/A

Discussion

21564.	Question : Assertion : A brief expoosure to extremely high sound level, 150dB or more generated by take offof a jet plane or rocket, may damage ear drum or dislocate ear ossicles and permanently impair the hearing ability. Reason : In India, the Air (Prevention and Control of Pollution ) Act came into force in 1981, but was amended in 1987 to include noise as an air pollutant.
Answer» SOLUTION :N//A

Discussion

21565.	Question : Assertion (A) : Blue carbon is stored in the atmosphere and oceans. Reason (R) : It is lost from the ecosystem.
Answer» ASSERTION is true and REASON is correct explanation of Assertion, Assertion and Reason is true but Reason is not correct explanation of Assertion. Assertion is true and Reason is false. Both Assertion and Reason are false. ANSWER :B

Discussion

21566.	Question : Assertion (A): Black pepper is a spice. Reason ( R): Condiments are flavouring substances, generally added after the cooking of food.
Answer» a) A is right R is wrong b) R explains A c) Both A and R are right. R is not CORRECT EXPLANATION for A. d) Both A and R are wrong Answer :C

Discussion

21567.	Question : Assertion (A): Asexual reproduction is called blastogenic reproduction. Reason (R): It is accomplished by mitotic and meiotic divisions.
Answer» A are R are CORRECT . R does not EXPLAIN A A is correct but R is INCORRECT Both A and R are incorrect R is the correct explanation for A Solution :A is correct but R is incorrect

Discussion

21568.	Question : Assertion (A) : Artificial insemination breeding technique is better than natural breeding . Reason (R) : In induced breeding of fishes , the ovulation is stimulated by hypophysation
Answer» Both A and R are CORRECT and R is the correct explanation of A Both A and R are correct but R is not the correct explanation of A A is true but R is FALSE A is false and R is true Answer :B

Discussion

21569.	Question : Assertion (A) : An interspecific hybrid of the male ass and the female horse is a sterile mule . Reason (R) : Mule is inferior to the parents as a beastof burden .
Answer» Both A and R are correct and R is the correct explanation of A Both A and R are correct but R is not the correct explanation of A A is TRUE but R is FALSE A is false and R is true ANSWER :C

Discussion

21570.	Question : Assertion (A) : Anemophilous pollination occurs by animals. Reason (R) : Pollen grains are sticky for easy attachment on animals.
Answer» A is correct R is INCORRECT R EXPLAINS A Both A and R are incorrect Both A and R are correct . R does not EXPLAIN R. Answer :C

Discussion

21571.	Question : Assertion (A) : Androecium and Gynoecium are essential whorls of flower Reason (R) Androecium and Gynoecium assist the reproduction.
Answer» A is CORRECT R is INCORRECT . R explains A Both A and R are incorrect Both A and R are correct . R does not explain R. Answer :A

Discussion

21572.	Question : Assertion (A): Amniocentesis helps to diagnose the chromosomal aberrations in foetus. Reason (R): Amniocentesis is legalized is our country.
Answer» Both A and R are wrong A is RIGHT and R is wrong R EXPLAINS A A is wrong R is right Solution :A is right and R is wrong

Discussion

21573.	Question :Assertion :- 28S rRNA in bacteria act as a ribozyme. Reason:- It is a main component for the formation of phosphodiester bond.
Answer» If both Assertion & REASON are TRUE & the Reason is a CORRECT explanation of the Assertion. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion. If Assertion is True but the Reason is FALSE. If both Assertion & Reason are False. Answer :D

Discussion

21574.	Question : Assertion: Agrobacterium tumifaciens is popular in genetic engineering because this bacteriusim associated with the root nodules of all cereals and pulse crops. reason: a gene incorporated in the bacterial chromosomal genome gets automatically transferred to the cross with which bacterium is associated.
Answer» Both ASSERTION and reason are true. But reason is CORRECT EXPLANATION of assertion. Both assertion and reason are true. But reason is not correct explanation of assertion Assertion is true but reason is FALSE both assertion and reason are false Solution :N/A

Discussion

21575.	Question :Aspergillus niger is used for production of :
Answer» Fumaric ACID BUTYRIC acid Gluconic acid ACETIC acid Answer :C

Discussion

21576.	Question : Aspergillus niger is commercially used to prepare
Answer» LACTIC acid Acetic acid CITRIC ADD Vinegar Solution :Citric Add

Discussion

21577.	Question : {:((a),"Somaclonal ", -, "Gametes" ),(,"variations",,),((b), "Artificial seeds " ,-,"Primary metabolites"),((c),"Secondary " , -, "Heat tolerant plants"),(,"metabolites",,),((d), "Gametoclonal", -, "Gametophytes" ),(,"variations",,):}
Answer» ANSWER :(d) GAMETOCLONAL - GAMETOPHYTES

Discussion

21578.	Question : Asneuploidy which results in the loss of a complete homologous pair of chromosomes is
Answer» Trisomy Tetrasomy Nullisomy Euploidy Answer :C

Discussion

21579.	Question : Asexual spores of Mucor are
Answer» uninucleated binucleated multinucleated MULTICELLULAR ANSWER :C

Discussion

21580.	Question : Asexual spores are generally absent in :-
Answer» USTILAGO Trichoderma Neurospora Yeast Answer :C

Discussion

21581.	Question : What are asexual reproductive bodies produced by sponges called?
Answer» SOLUTION :GEMMULES

Discussion

21582.	Question : Asexual reproduction is carried out by:
Answer» SINGLE Parent WITHOUT FUSION of gametes with or without formation of gametes All of the above Answer :D

Discussion

21583.	Question : True or False. If False correct the statement. Asexual reproductioninvolvesonlymitoticdivision .
Answer» ANSWER :TRUE

Discussion

21584.	Question : Asexual reproduction in plants is also called_____.
Answer» ANSWER :VEGETATIVE PROPAGATION

Discussion

21585.	Question : Asexual reproduction in fungi occurs by :
Answer» Aeciospores Basidiospores Conidia Oospores Answer :C

Discussion

21586.	Question : Asexual reproduction in Marchantia takes place by:-
Answer» Prothallus Multicellular rhizoids Gemmae Fragmentatation of protonema Answer :C

Discussion

21587.	Question : Difference between. Asexual reproduction and Sexual reproduction.
Answer» Solution :When OFFSPRING is PRODUCED by single PARENT WITHOUT GAMETE formation.

Discussion

21588.	Question : ASD hole is present
Answer» in the interatrial septum in the INTERVENTRICULAR septum between Aorta and PULMONARY artery all of these Answer :A

Discussion

21589.	Question : Ascomycetes are commonly called mushroom.
Answer» a. True b. False Answer :Sacfungi

Discussion

21590.	Question : Aschlminthes are commonly known as
Answer» Flatworms Roundworms Segmented WORMS Solid worms ANSWER :B

Discussion

21591.	Question : Ascent of water and minerals through xylem in plants
Answer» ALWAYS active Mostly active Always passive Mostly passive Answer :C

Discussion

21592.	Question : Ascent of sap takes place through
Answer» Tracheary elements Cortical cells Sieve elements None of these Answer :A

Discussion

21593.	Question : Ascent of sap in woody stem occurs mainly due to:
Answer» TRANSPIRATION PULL Capillarity MOLECULAR ADHESION Photosynthesis Answer :A

Discussion

21594.	Question : Ascent of sap in absence of roots was observed by
Answer» J.C.Bose Priestly Strasburger None of these Answer :A

Discussion

21595.	Question : Ascent of sap in tall trees is helped by
Answer» COHESION of WATER Adhesion of water with WALLS of xylem Transpiratory PULL All the above Answer :D

Discussion

21596.	Question : Ascent of sap in herbs is due to
Answer» ROOT pressure Transpiratory pull Cohesion of water Adhesion of water Answer :A

Discussion

21597.	Question : Ascending trophic level in grazing food chain pyramid represents
Answer» gradual decrease in BIOMASS from apex to base gradual decrease in biomass from base to the apex gradual INCREASE of the biomass from PRODUCERS to the tertiary consumers no CHANGE in biomass Answer :B

Discussion

21598.	Question : Ascending limb of loop of Henle is permeable to:
Answer» `NA^+` `K^+` `CL^-` All of the above Answer :D

Discussion

21599.	Question : Ascaris is most commanly found in :
Answer» men woman children sterile man Answer :C

Discussion

21600.	Question :Ascaris is characterised by
Answer» SEXUAL dimorphism Syncytial epidermis An ENDOPARASITE of SMALL intestine All of these Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : Assertion (A): Dermatomycosis is a cutaneous infection. Reason (R ):Fungus belongs to the order Trichophyton.

Question : Assertion (A) : Codominace is an example for intragenic interaction Reason (R) : Interaction take place between the alleles of same gene

Question : Assertion (A) : Cytoplasmic male sterility is a Mendelian inheritance Reason (R) : The genes for cytoplasmic male sterility in peal maize is located at mitochondrial DNA

Question : Assertion (A): Codeine causes addiction. Reason (R] : Codeine is an opium-derivative.

Question : Assertion (A): CO_2 , is a main cause for global warming Reason (R) : Greenhouse gases trap the radiant heat from sun

Question : Assertion (A) : Cattle feed should contain both roughage and concentrate . Reason (R) : Roughage of feed provides nutrients , while concentrate of food contains fibres .

Question : Assertion (A) : Carica papaya is a dioecious plant. Reason (R) : Both male and female are borne on same plant.

Question : Assertion : A change in nitrogen bass atthe third position of a codon causeschange in the expression of the codon. Reason : A codon is mostly read by all the three nitrogen bases.

Question : Assertion (A): Cervix is common site of ectopic pregnancies Reason (R): Implantation of fertilized ovum outside uterus.

Question : Assertion (A) : Capping protect the DNA from degradation. Reason (R) : Capping is followed by Tailing where 3' end of tRNA is cleaved.

Question : Assertion (A) : Bt cotton is genetically modified cotton with an insecticide activity against bollworm. Reason(R): Yield of cotton is increased due to effective control of bollworms

Question : Assertion (A) : Blue carbon is stored in the atmosphere and oceans. Reason (R) : It is lost from the ecosystem.

Question : Assertion (A): Black pepper is a spice. Reason ( R): Condiments are flavouring substances, generally added after the cooking of food.

Question : Assertion (A): Asexual reproduction is called blastogenic reproduction. Reason (R): It is accomplished by mitotic and meiotic divisions.

Question : Assertion (A) : Artificial insemination breeding technique is better than natural breeding . Reason (R) : In induced breeding of fishes , the ovulation is stimulated by hypophysation

Question : Assertion (A) : An interspecific hybrid of the male ass and the female horse is a sterile mule . Reason (R) : Mule is inferior to the parents as a beastof burden .

Question : Assertion (A) : Anemophilous pollination occurs by animals. Reason (R) : Pollen grains are sticky for easy attachment on animals.

Question : Assertion (A) : Androecium and Gynoecium are essential whorls of flower Reason (R) Androecium and Gynoecium assist the reproduction.

Question : Assertion (A): Amniocentesis helps to diagnose the chromosomal aberrations in foetus. Reason (R): Amniocentesis is legalized is our country.

Question :Assertion :- 28S rRNA in bacteria act as a ribozyme. Reason:- It is a main component for the formation of phosphodiester bond.

Question :Aspergillus niger is used for production of :

Question : Aspergillus niger is commercially used to prepare

Question : {:((a),"Somaclonal ", -, "Gametes" ),(,"variations",,),((b), "Artificial seeds " ,-,"Primary metabolites"),((c),"Secondary " , -, "Heat tolerant plants"),(,"metabolites",,),((d), "Gametoclonal", -, "Gametophytes" ),(,"variations",,):}

Question : Asneuploidy which results in the loss of a complete homologous pair of chromosomes is

Question : Asexual spores of Mucor are

Question : Asexual spores are generally absent in :-

Question : What are asexual reproductive bodies produced by sponges called?

Question : Asexual reproduction is carried out by:

Question : True or False. If False correct the statement. Asexual reproductioninvolvesonlymitoticdivision .

Question : Asexual reproduction in plants is also called_____.

Question : Asexual reproduction in fungi occurs by :

Question : Asexual reproduction in Marchantia takes place by:-

Question : Difference between. Asexual reproduction and Sexual reproduction.

Question : ASD hole is present

Question : Ascomycetes are commonly called mushroom.

Question : Aschlminthes are commonly known as

Question : Ascent of water and minerals through xylem in plants

Question : Ascent of sap takes place through

Question : Ascent of sap in woody stem occurs mainly due to:

Question : Ascent of sap in absence of roots was observed by

Question : Ascent of sap in tall trees is helped by

Question : Ascent of sap in herbs is due to

Question : Ascending trophic level in grazing food chain pyramid represents

Question : Ascending limb of loop of Henle is permeable to:

Question : Ascaris is most commanly found in :

Question :Ascaris is characterised by