24277 + Interview Questions in Biology in Class 12 Page 228 InterviewSolution

11351.	Question : Nucleolus takes part in synthesis of :
Answer» mRNA tRNA rRNA Protein Answer :C

Discussion

11352.	Question : Nucleolus synthesises RNA
Answer» 28 S and 18 S 28 S, 18 S and 5 S 28 S, 5.8 S and 5 S 28 S , 5.8 S and 5 S Solution :N//A

Discussion

11353.	Question :Non-cyclic photophophorylation during photosynthesis produces:
Answer» NADPH NADP NADH NAD Answer :A

Discussion

11354.	Question : Nucleolus isformed by
Answer» Primaryconstriction Nucleolarorganiser ENDOPLASMIC RETICULUM Ribosomes Answer :B

Discussion

11355.	Question : Nucleolar organiser is:
Answer» Nucleolus Nucleosome Primary constriction Secondary constriction Answer :D

Discussion

11356.	Question : Non-constitutive genes express themselves only when needed, are also called as
Answer» STRUCTURAL gene promoter gene house-keeping GENES LUXURY genes Answer :D

Discussion

11357.	Question : nucleic acid rarr Nucleotides rarr Nucleosides. which of the following gives the correct representation of enzyme A and B in above reaction?
Answer» Nucleotidases (A), Nucleosidases (B) NUCLEASES (A), Nucleosidases Nucleotidases (A) Nucleases (B) Nucleases (A), Nucleotidases (B) ANSWER :D

Discussion

11358.	Question : Non-cellular layer that connects inner surface of epithelial tissue to the connective tissue is
Answer» BASEMENT membrane Desmosomes Gap junction Tight junctions· Answer :A

Discussion

11359.	Question : Nucleic acid segment tagged with a radioactive molecule is called
Answer» CLONE PROBE PLASMID VECTOR SOLUTION :Probe

Discussion

11360.	Question :Nucleic acid can be fragmented by the enzyme :
Answer» POLYMERASES NUCLEASES PROTEASES Ligases Answer :B

Discussion

11361.	Question : Non-biodegradable pollutants are created by
Answer» nature excessive USE of resources humans natural disasters. Solution :Non-biodegradable pollutants are created by humans which effects our environment adversely. They have the TENDENCY to accumulate, as they are not degraded or broken down naturally into harmless compounds, e.g., DDT (dichlorodiphenyl TRICHLOROETHANE), BHC (Benzene hexachloride), polythene bags, etc.

Discussion

11362.	Question : Nuclear waste is an extreamly potent pollutant and has to be dealt with atmost caution. Why?
Answer» Solution :1. Rate of mutations are very high, it isextremely damaging to ORGANISMS. 2. At high doses nuclear RADIATION is lethal butat LOWER doses. It creates various disorders. 3. It creates cancer.

Discussion

11363.	Question : Non-biodegradable pollutants are created by(A)nature(B) excessive use of resources(C) humans(D) natural disasters
Answer» nature EXCESSIVE use of resources humans natural disasters Solution :Non-biodegradable POLLUTANTS are created by humans. These are the pollutants which are not decomposed or DECOMPOSE very slowly. These pollutants are DIFFICULT to manage and in most cases there is no treatment process to handle. Eg: plastics, glass, polythene bags or poisons like DDT (pesticide).

Discussion

11364.	Question : Nuclear membrane is absent in :
Answer» MONERA Protista Fungi plantae Answer :B

Discussion

11365.	Question : Nuclear membrane is absent in:-
Answer» Volvox Nostoc Penicillium Agaricus Answer :C

Discussion

11366.	Question :Non - albuminous seed is produced in
Answer» PEA MAIZE CASTOR Wheat Answer :A

Discussion

11367.	Question : Nuclear envelope assembles around the chromosome clusters at
Answer» LATE ANAPHASE Telophase Early prophase Late METAPHASE ANSWER :B

Discussion

11368.	Question : Non albuminous
Answer» Solution :Non ALBUMINOUS seeds have no residual endosperm as it is completely CONSUMED during EMBRYO development (EG. PEA, groundnut).

Discussion

11369.	Question : Nuclear DNA sends information for protein synthesis through
Answer» tRNA mRNA rRNA All the above Answer :B

Discussion

11370.	Question : nomenclature is is governed by certain universal rules. choose the statement which is contrary to the rules
Answer» biological names are generally in Latin name of the author appear before specific epithet the scientific name is underlines separately when handwritten first WORD in a biological name REPRESENTS the genus while the SECOND COMPONENT DENOTES the specific epithet. Answer :B

Discussion

11371.	Question : Nucellus: Perisperm PEN: _____
Answer» SOLUTION :ENDOSPERM

Discussion

11372.	Question : Noise cause
Answer» headache by constricting BLOOD vessels of the BRAIN eye strain by constricting the pupil digestive spasms through ANXIETY high blood pressure by decreasing cholesterol level in the blood. Solution :NOISE causes headache by dilating blood vessels of the brain, eye strain by diloating the pupil, digestive spasms through anxiety and high blood pressure by increasing choleterol level in the blood.

Discussion

11373.	Question : Nucellus fromswhich of the following part of fruit ?
Answer» SEED coat Perisperm Seed Raphe Answer :B

Discussion

11374.	Question : Noise pollution is caused by sound of .......
Answer» 50 DECIBELS 150 decibels 20 decibels 40 decibels ANSWER :B

Discussion

11375.	Question : Define :- Nucellus
Answer» Solution :Location: LOCATED within the integurments MAIN BODY of ovule has abundant reserve food material. FUNCTION: It DEVELOP embryo sac

Discussion

11376.	Question : Nodulation of legumes is reduced in deficency of
Answer» SULPHUR and potassium sulphur and boron manganese and coppe calcium and potassium Answer :C

Discussion

11377.	Question : Nucellar polyembryony is reported in species of
Answer» Citrus Gossypium Triticiwn Prassica Answer :A

Discussion

11378.	Question : No because we know about the first and last amino acids but in between them any type of amino acids may present for those we can not be sure.
Answer» Solution :Nobecause we know about the FIRST and last amino acids but in between them any type of amino acids MAY PRESENT for those we can not be SURE

Discussion

11379.	Question : Nucellar polyembryony is reported in species of:
Answer» Brassica Citrus Gossypium Triticum Solution :N//A

Discussion

11380.	Question : No net diffusion of water takes place when
Answer» A DRY seed is placed in a dilute solution A PLANT is exposed to gentle breeze A cell is placed in an isotonic solution A deplasmolysed cell is placed in hypertonic solution Answer :C

Discussion

11381.	Question : Nucellar polyembryony is reported in species of(A) grossypium(B) triticum(C) brassica(D) citrus
Answer» grossypium triticum brassica citrus Answer :D

Discussion

11382.	Question : Nlili ravi is a
Answer» BUFFALO COW pig sheep ANSWER :A

Discussion

11383.	Question : Nture does a lot of service for which an economic value or price tag can be put'.Substantiate giving examples.
Answer» Solution :Nature provides a lot of service. It provide all for the NEED of man. Examples: Purify air and WATER, Cycle nutrients, GENERATE fertile soil, MAINTAIN biodiversity, provide aesthetic, spritual and CULTURAL value.

Discussion

11384.	Question : Nitsch was able to get strawberries of different shapes by
Answer» Splitting the ovary REMOVING the PARIANTH Selectively removing some carpels Inserting an ALCOHOL DIPPED NEDDLE into overy. Answer :C

Discussion

11385.	Question : Nu-body has two copies of each
Answer» H_2,A & H_2,B H_1 & H_2 H_3 & H_4 All EXCEPT (2) ANSWER :D

Discussion

11386.	Question : Nitrous oxide is a potent mutagen - comment.
Answer» Solution :Nitrous oxide alters the nitrogen BASES of DNA and disturb te REPLICATION and transcription that leads to the formation of INCOMPLETE and defective polypeptide during TRANSLATION.

Discussion

11387.	Question : NPP is equals to
Answer» GPP +R GPP-R GPP- R `GPPdivR` SOLUTION :GPP-R

Discussion

11388.	Question : Nitrosomonas and Nitrosococcus are involved in
Answer» OXIDATION of NITRATES into nitrites Reduction of Nirates to nitrities Oxidation of AMMONIA into nitrites Reduction of nitrates of ammonia Answer :C

Discussion

11389.	Question : Now, sequencing of total genomes getting is getting less expensive day by the day. Soon it may be affordable for a common man to get his genome sequenced. What in your opinion could be the advantage and disadvantage of this development ?
Answer» Solution :Advantages : (i) Knowledge about the effects of DNA variations among individuals can lead to revolutionary new ways to diagnose, treat and some day prevent the thousands of disorders that affect human beings. (ii) Besides providing CLUES to understanding human biology, LEARNING about non-human organisms DNA sequences can lead to an understanding of their natural capabilities that can be applied toward SOLVING challenges in health care, agriculture, energy production, environmental remediation. (iii) Deriving meaningful knowledge from the DNA sequences will define research through the coming decades leading to our understanding of biological systems. (iv) They can study all the genes in a genome, for example, all the transcripts in a particular tissue or organ or TUMOR, or how tens of thousands of genes and proteins work together in interconnected networks to orchestrate the chemistry of life. Disadvantages : (i) It CREATES the problem of patenting of genes. (ii) Persons becomes more careless. (ii) people may abuse the knowledge obtained from the HGP

Discussion

11390.	Question : Nitrogenous bases do not contain :
Answer» Hydrogen Nitrogen Carbon Phosphorus Answer :D

Discussion

11391.	Question : Now a days, the most commonly used matrix in gel electrophoresis is
Answer» AGAROSE ETHIDIUM bromide SULPHATE bromide SULPHITE bromide Answer :A

Discussion

11392.	Question : Nitrogen oxidesproducedfromthe emissionof automobilesand power plants arethe sourceof fine airborne particleswhich leadto
Answer» PHOTOCHEMICAL smog dry ACID DEPOSITION industrialsmog wetacid deposition ANSWER :B

Discussion

11393.	Question : Now a days number of frogs is reducing around us if it continues what will happen in the near future? Predict it. What is the importance of its existence in the nature?
Answer» Solution :FROG may become extinct. In an ecosystem, all species are interlinked through various TYPES of relationships. if FROGS become extinct, it will affect the FUNCTIONING of the ecosystem(FOOD chains, food web).

Discussion

11394.	Question : Nitrogeneous bases do not contain :
Answer» Hydrogen Nitrogen Carbon Phosphorus Answer :D

Discussion

11395.	Question : Now a daysthe accumulationof plasticwasteis the majorproblem becausesuch wastesare nonbiodegradable In someplacesit is usedfor benefiacial purpose Name the mixturesusedby Ahamed khanto lay downroadsin Bangalore How was itminimizedtheaccumulationof solidwastes?
Answer» SOLUTION :a)polyblendand BITUMEN The RAW materialfor CREATING polybelnd is anyplasticfilm WASTE so theaccumulationof plasticwastescan becontrolled .

Discussion

11396.	Question : Now-a-days cancer-death is increasing day by day. Is this due to the change in living habits? a. What do you think about this statement? b. Give some characters of this disease. c . It is found out that mutations in some genes cause cancer. Justify this statement.
Answer» Solution :a. YES. CANCER death is increasing day by day b. i. Cancer cells are IMMORTAL i.e., they show indefinite growth. ii. Normal constraints of growth are bypassed in the cancer cells iii. They show metastasis. c. Yes. Mutation of genes causes cancer. The mutation of proto-oncogenesleads to the formation of ONCOGENES and which in turn cause cancer.

Discussion

11397.	Question : Now a daysmany farmersare ineterestedin organicfarming what is meantby organicfarming ? Can you suggestany twoadvantagesof organicfarm -ing ?
Answer» Solution :It is the CYCLICAL , sustainableand ZERO waste PROCEDURE ADVANTAGEOUS 1)no needof chemicalsfertilizers 2) No needofinsecticidesand pesticides Never killsmicroorganism in the soil .

Discussion

11398.	Question : Nitrogen oxides produced from emission of authomobiles and power plants are the sources of fine air borne particles which lead to :
Answer» INDUSTRIAL smog Dry ACID deposition Wet acid deposition Photochemical smog Answer :D

Discussion

11399.	Question : Notochord, skeletal system and dermis of skin are derived from
Answer» Mesoderm Endoderm Ectodermq All the above. ANSWER :A

Discussion

11400.	Question : Nitrogen is critical element of the ecosystem because it is
Answer» ESSENTIAL element Abundant in atmosphere Labile in nature Fixed by microbes Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : Nucleolus takes part in synthesis of :

Question : Nucleolus synthesises RNA

Question :Non-cyclic photophophorylation during photosynthesis produces:

Question : Nucleolus isformed by

Question : Nucleolar organiser is:

Question : Non-constitutive genes express themselves only when needed, are also called as

Question : nucleic acid rarr Nucleotides rarr Nucleosides. which of the following gives the correct representation of enzyme A and B in above reaction?

Question : Non-cellular layer that connects inner surface of epithelial tissue to the connective tissue is

Question : Nucleic acid segment tagged with a radioactive molecule is called

Question :Nucleic acid can be fragmented by the enzyme :

Question : Non-biodegradable pollutants are created by

Question : Nuclear waste is an extreamly potent pollutant and has to be dealt with atmost caution. Why?

Question : Non-biodegradable pollutants are created by(A)nature(B) excessive use of resources(C) humans(D) natural disasters

Question : Nuclear membrane is absent in :

Question : Nuclear membrane is absent in:-

Question :Non - albuminous seed is produced in

Question : Nuclear envelope assembles around the chromosome clusters at

Question : Non albuminous

Question : Nuclear DNA sends information for protein synthesis through

Question : nomenclature is is governed by certain universal rules. choose the statement which is contrary to the rules

Question : Nucellus: Perisperm PEN: _____

Question : Noise cause

Question : Nucellus fromswhich of the following part of fruit ?

Question : Noise pollution is caused by sound of .......

Question : Define :- Nucellus

Question : Nodulation of legumes is reduced in deficency of

Question : Nucellar polyembryony is reported in species of

Question : No because we know about the first and last amino acids but in between them any type of amino acids may present for those we can not be sure.

Question : Nucellar polyembryony is reported in species of:

Question : No net diffusion of water takes place when

Question : Nucellar polyembryony is reported in species of(A) grossypium(B) triticum(C) brassica(D) citrus

Question : Nlili ravi is a

Question : Nture does a lot of service for which an economic value or price tag can be put'.Substantiate giving examples.

Question : Nitsch was able to get strawberries of different shapes by

Question : Nu-body has two copies of each

Question : Nitrous oxide is a potent mutagen - comment.

Question : NPP is equals to

Question : Nitrosomonas and Nitrosococcus are involved in

Question : Now, sequencing of total genomes getting is getting less expensive day by the day. Soon it may be affordable for a common man to get his genome sequenced. What in your opinion could be the advantage and disadvantage of this development ?

Question : Nitrogenous bases do not contain :

Question : Now a days, the most commonly used matrix in gel electrophoresis is

Question : Nitrogen oxidesproducedfromthe emissionof automobilesand power plants arethe sourceof fine airborne particleswhich leadto

Question : Now a days number of frogs is reducing around us if it continues what will happen in the near future? Predict it. What is the importance of its existence in the nature?

Question : Nitrogeneous bases do not contain :

Question : Now a daysthe accumulationof plasticwasteis the majorproblem becausesuch wastesare nonbiodegradable In someplacesit is usedfor benefiacial purpose Name the mixturesusedby Ahamed khanto lay downroadsin Bangalore How was itminimizedtheaccumulationof solidwastes?

Question : Now-a-days cancer-death is increasing day by day. Is this due to the change in living habits? a. What do you think about this statement? b. Give some characters of this disease. c . It is found out that mutations in some genes cause cancer. Justify this statement.

Question : Now a daysmany farmersare ineterestedin organicfarming what is meantby organicfarming ? Can you suggestany twoadvantagesof organicfarm -ing ?

Question : Nitrogen oxides produced from emission of authomobiles and power plants are the sources of fine air borne particles which lead to :

Question : Notochord, skeletal system and dermis of skin are derived from

Question : Nitrogen is critical element of the ecosystem because it is