24277 + Interview Questions in Biology in Class 12 Page 183 InterviewSolution

9101.	Question : Rhizome, Stem tuber, Sucker, Conidia
Answer» Solution :Conidia - Asexual REPRODUCTIVE bodies in PENICILLIUM. Others are vegetative propagules in higher PLANTS.

Discussion

9102.	Question : Rhizome of ginger is a modified of stem because-
Answer» It BEARS ADVENTITIOUS roots It bears NODES and internodes It is underground It STORES FOOD material Answer :B

Discussion

9103.	Question : Rhizoids of Funaria are :-
Answer» Unicellular, colourless with OBLIQUE SEPTA Multicellular, coloured with transverse septa Multicellular, colourless with oblique septa Multicellular, coloured with oblique and transverse septa Answer :B

Discussion

9104.	Question : Rhizoids containing sporophytic plants are characteristic of :-
Answer» Bryopsida Spernopsida Cycadophyta Psilopsida Answer :D

Discussion

9105.	Question : Rhizohium Clostridium and Azotobacter are
Answer» bacilil cocci vibrio spirillum ANSWER :A

Discussion

9106.	Question : Rhizobium bacteria and root nodules of pea plant is an example for
Answer» SYMBIOSIS COMMENSALISM PREDATION PARASITISM ANSWER :A

Discussion

9107.	Question : Rhizobium bacteria and rootnodulesof pea plant is an exampel for
Answer» SYMBIOSIS COMMENSALISM PREDATION PARASITISM ANSWER :a

Discussion

9108.	Question : Rhino viruses which cause one of the most infeoious human ailments they are
Answer» COMMON COLD and CHICKEN pox common cold diphtheria mumps Answer :B

Discussion

9109.	Question : Rhizobium, Azospirillum and Azotobacter act as biofertilisers. How?
Answer» Solution :These bacteria fix atmospheric NITROGEN and ENRICH the nitrogen content of the SOIL.

Discussion

9110.	Question : Rh incompatibility occurs mother and foetus when
Answer» Both and RH+ve Both and Rh-ve Mother in Rh+ve and FACTORS in Rh-ve Mother is Rh -ve and factors is Rh +ve Answer :A

Discussion

9111.	Question : Rh blood group was discovered by
Answer» LEVINE and Bateson Weiner and Winchester Landsteiner and MORGAN Levine Landsteiner, Levine Answer :D

Discussion

9112.	Question : "Rh antigen has great significance in connection with pregnancy." a. Name the haemolytic disease of foetus related to Rh antigen.
Answer» Solution :a. ERYTHROBLASTOSIS foetalis/HDN -HAEMOLYTIC DISEASE of NEW BORN/ Rh incompatibility

Discussion

9113.	Question : RFLP analysis is a technique that
Answer» uses HYBRIDIZATION to detect specific DNA restriction FRAGMENTS in genomic DNA measures the trnasfer FREQUENCY of GENES during conjugation is used to detect genetic variations at protein loci is used to amplify genes for producing USEFUL products Answer :A

Discussion

9114.	Question : Read the cross and answer the following RrYy (F1 hybrid) xx rryy (recessive parent ) (a) Name the type of cross . (b) Mention the ratio of the cross.
Answer» SOLUTION :Dihybrid TEST cross and the ratio is 1 : 1: 1 : 1

Discussion

9115.	Question : Reverse transcrptase:
Answer» DISINTEGRATES HOST DNA translates host DNA transcribes VIRAL RNA to DNA polymerises host DNA Answer :C

Discussion

9116.	Question : Reverse transcriptase can synthesise
Answer» DNA → DNA DNA → RNA RNA → Protein RNA → DNA Answer :D

Discussion

9117.	Question : Reverse chloride shift begins at the
Answer» Venular END of PULMONARY CAPILLARY Arteriolar end of SYSTEMIC capillary Venular end of systemic capillary Arteriolar end of pulmonary capillary Answer :D

Discussion

9118.	Question : Reversal of vernalization by high temperature.
Answer» ANSWER :devernalization

Discussion

9119.	Question : Reverse transcription occurs in
Answer» Some viruses Some prokaryotes All viruses All organisms Answer :A

Discussion

9120.	Question :Retting of fibres is brought about by the activity of :
Answer» VIRUSES FUNGI bacteria mycorrhiza Answer :C

Discussion

9121.	Question : Retroviruses do not follow central Dogma. Comment.
Answer» Solution :Genetic MATERIAL of RETROVIRUS is RNA. At the TIME of synthesis of protein, RNA is .reverse transcribed. to its complementary DNA first, which is opposite to the central dogma. Hence, retrovirus are not known to follow central dogma.

Discussion

9122.	Question : Retroviruses in animals have the ability to transform normal cell into
Answer» TUMOUR RNA containing CELL DNA containing cell Cancerous cell Answer :D

Discussion

9123.	Question : Retroviruses are disarmed before using to deliver desirable genes into animal cells. Why?
Answer» Solution :It is DISARMED in order to AVOID the transformation of NORMAL CELLS in to cancerous cells.

Discussion

9124.	Question : Retranslocation of minerals from mature leaf to young leaf occurs through mostly:
Answer» Xylem Phloem Parenchyma Apoplast Answer :B

Discussion

9125.	Question : Retrotransposons and DNA transposons.
Answer» SOLUTION :

Discussion

9126.	Question : Retrogressive metamorphosis is found in Amphioxus/Herdmania.
Answer» AMPHIOXUS SALPA BALANOGLOSSUS Myxine Answer :B

Discussion

9127.	Question : Retina of the vertebrates eye consists of :
Answer» NEURONS and NEUROGLIA RODS, CONES, neurons and neuroglia Rods, cones and neuroglia Rods and cones Answer :B

Discussion

9128.	Question : Retina has
Answer» RODE and CONES only Rods only Cones only rods, cones and neuroganglion CELLS. ANSWER :D

Discussion

9129.	Question : Result of incomplete dominance is ...............
Answer» INTERMEDIATE GENOTYPE Intermediate phenotype Recessive phenotype EPISTASIS ANSWER :B

Discussion

9130.	Question : 'Restriction' in restriction enzyme refers to
Answer» Cleaving of phosphodiester bond in DNA by the enzyme Cutting of DNA at specific position only PREVENTION of the multiplication of BACTERIOPHAGE by the host bacteria All of the above Solution :Cutting of DNA at specific position only .RESTRICTION. in Restriction enzyme refers to cutting of DNA at specific SITES and are also referred to as molecular SCISSORS.

Discussion

9131.	Question : Restriction fragments are formed on lagging strand.
Answer» ANSWER :OKAZAKI

Discussion

9132.	Question : Restriction enzymes should not have more than one site of action in the cloning site of a vector. Comment.
Answer» Solution :If the restriction enzymes have many RECOGNITION SITES in a vector, than the vector itself will getfragmented on TREATMENT with the restriction ENZYME.

Discussion

9133.	Question : Restriction enzymes that are used in the construction of recombinant DNA are endonucleases which cut the DNA at 'specific-recognition sequence'. What would be the disadvantage if they do not cut the DNA at specific-recognition sequence?
Answer» SOLUTION :For reconstruction of recombinant DNA, restriction enzyme NEEDS to make cut at specific SITE so that both vector DNA and insert DNA have the same sticky ends. U restriction enzyme cuts at random sites, the two types ofDNAs will not have sticky ends and recombinant DNA molecule will not be formed.

Discussion

9134.	Question : Restriction enzymes was discovered by
Answer» Alexender FLEMING SMITH and Nathans BERG NONE of these Solution :Smith and Nathans

Discussion

9135.	Question : Restriction enzymes recognizes specific
Answer» PALINDROMIC REGION EXONS INTRONS NONE of these Solution :Palindromic region

Discussion

9136.	Question : Genetic engineering includes creation of recombinant DNA with the help of restriction enzymes. (a) Explain recombinant DNA technology. (b) What are restriction enzymes? Name a restriction enzyme.
Answer» SOLUTION :NUCLEASES

Discussion

9137.	Question : Restriction enzymes are used in genetic engineering and
Answer» cut DNA BASE pairs at specific SITES cut DNA base pairs at variable sites join two DNA SEGMENTS cut RNA base pairs at specific sites SOLUTION :cut DNA base pairs at specific sites

Discussion

9138.	Question : Restriction enzymes are
Answer» Not always required in genetic engineering Essential tools in genetic engineering Nucleases that cleave DNA at SPECIFIC SITES both b and C ANSWER :D

Discussion

9139.	Question : Restriction enzymes are also known as
Answer» Palindromes selectable markers molecular scissors gene cloning Answer :C

Discussion

9140.	Question : Restriction endonucleases (Molecular Scissors) are utilised in genetic engineering technique as
Answer» MOLECULAR build up nucleotides in tan-dem molecular scalpels for cutting DNA BREAK up molecular scalpels for cutting DNA at specific sites molecular cement for combining DNA bits into long chains Answer :C

Discussion

9141.	Question : Restriction endonucleases used widely in RDT are obtained from
Answer» Plasmids Bacterial cells Bacteriophages All PROKARYOTIC cells Answer :B

Discussion

9142.	Question : Restriction enzyme Eco RI cuts the DNA between bases G and A only when the sequence in DNA is:
Answer» GATATC GAATTC GATTCC GAACTT Answer :B

Discussion

9143.	Question : Restriction enzyme breaks
Answer» GLYCOSIDIC BOND H-bond Sugar-Phosphate LINKAGE All of these SOLUTION :Sugar-Phosphate linkage

Discussion

9144.	Question : Restriction endonucleases are useful in
Answer» BREAKING DNA at SPECIFIC sites Creating STICKY ends Both A and B Crossing over Answer :C

Discussion

9145.	Question : Restriction endonucleases are used to cut DNA at specific sites. Name the first endonuclease isolated from Escherichia coli
Answer» ANSWER :ECO RI

Discussion

9146.	Question : Restriction endonucleases are used as
Answer» MOLECULAR build up at nucleotides molecular degradating to DNA breakup molecular KNIVES for cutting DNA at specific SITES molecular cement to COMBINE DNA sites Solution :molecular knives for cutting DNA at specific sites

Discussion

9147.	Question : Restriction endonucleases are the enzymes used to cut the DNA molecules. Name the enzyme that joins the foreign DNA and vector DNA.
Answer» SOLUTION :DNA LIGASE

Discussion

9148.	Question : Restriction endonucleases are so called because they :
Answer» Restriction nuclear activity Cleave DNA molecules into smaller PIECES at specific SITES Synthesize DNA BREAKDOWN DNA molecule at RANDOM Solution :Cleave DNA molecules into smaller pieces at specific sites

Discussion

9149.	Question : Restriction endonucleases are the enzymes used to cut the DNA molecules. Give any two procedures to introduce the recombinant DNA into the host cell.
Answer» Solution :(i) Direct GENE transfer method - micro injection. Biolistics/gene GUN (II) Indirect gene transfer method by using CLONING VECTORS.

Discussion

9150.	Question : Restriction endonucleases are the enzymes used to cut the DNA molecules. Give the general term for the specific sequences where these enzymes cut the DNA.
Answer» SOLUTION :Recogniion SEQUENCE (or) PALINDROMIC NUCLEOTIDE sequence.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Rhizome, Stem tuber, Sucker, Conidia

Question : Rhizome of ginger is a modified of stem because-

Question : Rhizoids of Funaria are :-

Question : Rhizoids containing sporophytic plants are characteristic of :-

Question : Rhizohium Clostridium and Azotobacter are

Question : Rhizobium bacteria and root nodules of pea plant is an example for

Question : Rhizobium bacteria and rootnodulesof pea plant is an exampel for

Question : Rhino viruses which cause one of the most infeoious human ailments they are

Question : Rhizobium, Azospirillum and Azotobacter act as biofertilisers. How?

Question : Rh incompatibility occurs mother and foetus when

Question : Rh blood group was discovered by

Question : "Rh antigen has great significance in connection with pregnancy." a. Name the haemolytic disease of foetus related to Rh antigen.

Question : RFLP analysis is a technique that

Question : Read the cross and answer the following RrYy (F1 hybrid) xx rryy (recessive parent ) (a) Name the type of cross . (b) Mention the ratio of the cross.

Question : Reverse transcrptase:

Question : Reverse transcriptase can synthesise

Question : Reverse chloride shift begins at the

Question : Reversal of vernalization by high temperature.

Question : Reverse transcription occurs in

Question :Retting of fibres is brought about by the activity of :

Question : Retroviruses do not follow central Dogma. Comment.

Question : Retroviruses in animals have the ability to transform normal cell into

Question : Retroviruses are disarmed before using to deliver desirable genes into animal cells. Why?

Question : Retranslocation of minerals from mature leaf to young leaf occurs through mostly:

Question : Retrotransposons and DNA transposons.

Question : Retrogressive metamorphosis is found in Amphioxus/Herdmania.

Question : Retina of the vertebrates eye consists of :

Question : Retina has

Question : Result of incomplete dominance is ...............

Question : 'Restriction' in restriction enzyme refers to

Question : Restriction fragments are formed on lagging strand.

Question : Restriction enzymes should not have more than one site of action in the cloning site of a vector. Comment.

Question : Restriction enzymes that are used in the construction of recombinant DNA are endonucleases which cut the DNA at 'specific-recognition sequence'. What would be the disadvantage if they do not cut the DNA at specific-recognition sequence?

Question : Restriction enzymes was discovered by

Question : Restriction enzymes recognizes specific

Question : Genetic engineering includes creation of recombinant DNA with the help of restriction enzymes. (a) Explain recombinant DNA technology. (b) What are restriction enzymes? Name a restriction enzyme.

Question : Restriction enzymes are used in genetic engineering and

Question : Restriction enzymes are

Question : Restriction enzymes are also known as

Question : Restriction endonucleases (Molecular Scissors) are utilised in genetic engineering technique as

Question : Restriction endonucleases used widely in RDT are obtained from

Question : Restriction enzyme Eco RI cuts the DNA between bases G and A only when the sequence in DNA is:

Question : Restriction enzyme breaks

Question : Restriction endonucleases are useful in

Question : Restriction endonucleases are used to cut DNA at specific sites. Name the first endonuclease isolated from Escherichia coli

Question : Restriction endonucleases are used as

Question : Restriction endonucleases are the enzymes used to cut the DNA molecules. Name the enzyme that joins the foreign DNA and vector DNA.

Question : Restriction endonucleases are so called because they :

Question : Restriction endonucleases are the enzymes used to cut the DNA molecules. Give any two procedures to introduce the recombinant DNA into the host cell.

Question : Restriction endonucleases are the enzymes used to cut the DNA molecules. Give the general term for the specific sequences where these enzymes cut the DNA.