24277 + Interview Questions in Biology in Class 12 Page 391 InterviewSolution

19501.	Question : Cigarette smoke contains the carcinogen
Answer» N-nitrosodimethylene Aflatoxin Vinyl chloride Diethylstilbestrol Answer :A

Discussion

19502.	Question : CIFA is located at _____.
Answer» ANSWER :BHUBANESWAR

Discussion

19503.	Question : Chylomicrons are
Answer» FAT DROPLETS COATED with phospholids Fat droplets coated with CHOLESTEROL and proteins Undigested protein Undigested carbohydrates Answer :B

Discussion

19504.	Question : Chymification of food occurs in:
Answer» Rectum Buccal cavity Stomach Intestine Answer :C

Discussion

19505.	Question : Chrysophytes are :-
Answer» DIATOMS & Desmids Diatoms & Dinoflagellale Slime MOULD & Desmids Slime mould & Diatoms Answer :A

Discussion

19506.	Question : Chromosomes replicate in which stage of meiosis?
Answer» Prophase-1 Propahse-ii Telophase-i Interphase Answer :D

Discussion

19507.	Question : Who proposed chromosometheory for heredity ?
Answer» ANSWER :MELANIN

Discussion

19508.	Question : Chromosome number is reduced during meiosis because the process consists of :-
Answer» TWO cell divisions without any chromosome replication Two cell divisions and only a SINGLE ROUND of chromosome replication A single cell DIVISION without any chromosome replication Answer :B

Discussion

19509.	Question : Chromosome number in the meiocyte of onion________
Answer» ANSWER :380

Discussion

19510.	Question : Chromosome number in gametes of human being is __________
Answer» ANSWER :23

Discussion

19511.	Question : Chromosome number in meiocyte of Apple is …………(A) 17(B) 34(C) 20(D) 10
Answer» 17 34 20 10 Answer :B

Discussion

19512.	Question : Chromosome number in different cell division cycles are shown in the graph :- Mark the option that correctly depicts the number and the process :-
Answer» V-VIII :- Meiosis-I III-IV :- Mitosis VII-X :- MEIOTIC division I-IV :- MITOTIC division Answer :D

Discussion

19513.	Question : Chromosome is made up of:
Answer» DNA+pectin RNA+DNA DNA+histone only histone Answer :C

Discussion

19514.	Question : Chromosome map is useful for
Answer» FINDING exact location of gene on chromosome knowing combination of various genes in a linkage GROUP of chromosomes predicting RESULTS of DIHYBRID and trihybrid crosses all above Answer :D

Discussion

19515.	Question : Chromosomal disorders are caused due to
Answer» Absence of one of more chromosomes Excess of one or more chromosomes ABNORMAL arrangement of one or more chromosomes All of the above Solution :The CHROMOSOMAL disorders on the other hand are caused DUE to absence or excess or abnormal arrangement of one or more chromosomes. It is of 2 types - (i) aneuploidy and (II) polyploidy/euploidy

Discussion

19516.	Question : Chromosomal composition of a human sperm.
Answer» SOLUTION :22A+X or 22A+Y.

Discussion

19517.	Question : Christmas disease is caused due to absence of
Answer» PLASMA THROMBOPLASTIN Plasma thromboplastin anticedent Anti-haemoglobin Rh-antigen Answer :A

Discussion

19518.	Question : Chosse the coorect answer : Chlamydomonas reproduces asexually through
Answer» Gemmules Conidia Bud Zoospores Answer :D

Discussion

19519.	Question : Chosse the incorrect statement.
Answer» The Montreal PROTOCOL is associated with the control of emission of ozone depleting substances. Methane and carbon dioxide are greenhouse gases. DOBSON units are used to measure oxygen content. Use of incinertators is crucial to disposal of hospital wastes. Solution :Dobson units (DU) are used to REPRESENT the concentration or THICKNESS of ozone `(O_(3))` in our ATMOSPHERE. `100 = 1ppb` (parts per billion).

Discussion

19520.	Question : Chose-pollination requires abiote or biotic agent.
Answer» ANSWER :1

Discussion

19521.	Question : Choroid plexuses of the brain are involved in the production of
Answer» Lymph Endolymph Perilympha CEREBROSPINAL FLUID ANSWER :D

Discussion

19522.	Question : Chordie tendinae are made of
Answer» ELASTIC fibres nerve fibres collagen fibres muscle fibres Answer :C

Discussion

19523.	Question : Chordates differ from non chordates in having
Answer» BILATERAL SYMMETRY Heart Notochord NERVE cord Answer :C

Discussion

19524.	Question : Chordae tendineae
Answer» Solution :Chorade tendinae attach tricuspid and bicuspid valves to the PAPILLARY MUSCLES of ventricles and THEREBY prevent these valvesturning back into the ATRIA at the time of systole

Discussion

19525.	Question : Choose wrong pair –
Answer» MANGO – Drupe Musk MELON – Pepo Brinjal – Berry Rice – Pome Answer :D

Discussion

19526.	Question : Choose wrong combination with respect to the location of enzymes in C_4 plants
Answer» PEPCASE - stroma of mesophyll CELL chloroplast RUBISCO - stroma of bundle sheath cell chloroplast Malic ENZYME - strone of bundle sheath cell chloroplast PYRUVATE dikinase - stroma of mesophyll cell chloroplast Answer :A

Discussion

19527.	Question : Choose the wrong statement regarding AIDS.
Answer» AIDS is an IMMUNODEFICIENCY disease It is caused by the RETROVIRUS HIV. HIV selectively infects and kills B-lymphocytes. Retroviruses have RNA genome that replicate VIA DNA intermediate. Solution :HIV selectively infects and kills B-lymphocytes.

Discussion

19528.	Question : Choose the wrong statement in the process of protein synthesis.
Answer» After uncoiling of DNA MOLECULE, one strand acts as a template for the formationof m-RNA. In the PRESENCE of DNA, polymerase ENZYME the m-RNA is formed based on thetriplet codes. The m-RNA that leaves nucleus reaches cytoplasm and gets attached' with 30 Sribosomal subunit. The amino acids are transferred from the intra-cellular amino acid pool to the active ribosomes by the t-RNA. ANSWER :B

Discussion

19529.	Question : Choose the wrong pair.
Answer» Salvodora - Desert Cenchrus - SAVANNA Abies - CONIFEROUS FOREST Tectona - Temperate forest ANSWER :D

Discussion

19530.	Question : Choose the wrong match with reference to joits
Answer» Gomposes - Intercarpal JOINTS Synsedmoses-Joint between TIBIA and FIBULA Symphysis - Joint between VERTEBRAE Synchondrosis - Epiphyseal plate. Answer :A

Discussion

19531.	Question : Choose the wrong match
Answer» SUTURES - FIBROUS JOINTS Saddle joints - SYNOVIAL joints Condyloid joints - fibrous joints Symphyses - CARTILAGINOUS joints Answer :C

Discussion

19532.	Question : Choose the word which is different from other words.
Answer» FARADAY EDISON NEWTON Beethoven Solution :All exceptBeethovanwere SCIENTISTS,whileBeethovan wasamusician.

Discussion

19533.	Question : Choose the statement which is incorrect about pinocyticreproduction.
Answer» In pinocyticreproduction, the whole VIRUS includingthe envelope passesinto the host cell Retrovirusesare the BEST EXAMPLES to DESCRIBE pinocyticreproduction The reversetranscriptase uses thetRNA as template to form a RNA-DNA hybrid The host RNA polymerase DIRECTS the synthesisof mRNAand new tRNAgene Answer :A

Discussion

19534.	Question : Choose the statement which is incorrect about animalviruses.
Answer» These are generally POLYHEDRAL or SPHERICAL in shape In some animal VIRUSES the capsid is surrounded by an envelope Mumps is a dermatotropicvirus Pullo VIRUS is a neurotropic virus Answer :C

Discussion

19535.	Question : Choose the statement.
Answer» All PROTEINS have 20 AMINO acids Both ends of a protein are similar All proteins are solubel Proteins are FORMED by PEPTIDE bonds Answer :A

Discussion

19536.	Question :Choose the right one among the statements given below:
Answer» IUDs are generally INSERTED by the user herself IUDs INCREASE phagocytosis reaction in the uterus IUDs suppress gametogenesis IUDs once inserted need not be replaced Solution : In uterus non medicated IUDs increase phagocytosis done by bacteria of sperms. Releasing ions of copper from IUDs suppress motality of sperms and suppress fertility of sperms. IUDs releasing hormones makes uterus improper for implantation and makes cervix unfavorable from sperms. EG. Progesterone LNG - 20 Internal devices of uterus IUDs are used as effective and popular contraceptive METHOD. They are put into uterus through vagina by doctors or successful nurses. Currently available IUDs non medicated (eg. Lipen Loop), copper releasing IUDs (Cu T, Cu 7, Multiload 375) and IUDS releasing hormones. (progestart - LNG - 20) IUDs don.t stop oogenesis. Oogenesis occur in ovary while IUDs are entered into uterus through vagina by any expert or a doctor.

Discussion

19537.	Question : Choose the property which directly provide enough energy to cause a confirmational change in F? particle of the ATP synthase enzyme. Which make the enzyme synthesise several molecules of ATP :-
Answer» Creation of the PROTON GRADIENT Breakdown of the proton gradient Activity of the plasto-quinone Activity of NADP reductase enzyme ANSWER :B

Discussion

19538.	Question : Choose the parts of the world where sponge fishing is practised on a large scale.
Answer» South AMERICA and Atlantic SEA Central Amercia and Mediterranean sea Mediterranean Florida and West INDIES South Africa and Mediterranean Sea ANSWER :C

Discussion

19539.	Question : Choose the option with correct expression.
Answer» `psi_w=psi_s-psi_p` `psi_s=psi_w+psi_p` `psi_w=psi_s+psi_p` `psi_w=psi_p-psi_s` ANSWER :C

Discussion

19540.	Question : Choose the option that correctly identifies 'A' and 'B' from the following figure. .
Answer» ANSWER :B

Discussion

19541.	Question : Choose the option which describes the Aschelminthes with its exclusive features
Answer» Unsegmented body , muscular PHARYNX , PSEUDOCOELOMATE , females are LONGER than males Segmented body , muscular pharynx , pseudocoelomate , females are longer than males Unsegmented body , muscular pharynx , ACOELOMATE , females are longer than males Answer :A

Discussion

19542.	Question : Choose the odd w.r.t primary air pollutants.
Answer» `CO_2` `NO_x` Pollen PAN Answer :B

Discussion

19543.	Question : Choose the odd one w.r.t. cryptogams
Answer» CHLAMYDOMONAS PORPHYRA Anabaena Spirogyra Answer :C

Discussion

19544.	Question : Choose the odd one w.r.t eukaryotic cells.
Answer» CELL membrane Mesosomes Lysosomoes Ribosomes Answer :D

Discussion

19545.	Question : Choose the odd one w.r.t. barrier method of contraceptives
Answer» JELLIES Nirodh VAULTS Diaphragms Solution :Identify a chemical method of contraception CONDOM , fem shield , diaphragm , cerivcal CAP and vaults are common BARRIER methods. Chemical contraceptives are spermicidal creams jellies and foams

Discussion

19546.	Question : choose the odd one out w.r.t class
Answer» INSECTA DICOTYLEDONAE MAMMALIA ANGIOSPERMAE ANSWER :D

Discussion

19547.	Question : Choose the odd one out with respect to generic name :-
Answer» Solanum Petunia Datura Convolvulaceae Answer :D

Discussion

19548.	Question : Choosethe odd one from the following and write the common feature of others:
Answer» ESTROGEN ANDROGEN Relaxin Progesterone. Answer :B

Discussion

19549.	Question : Choose the odd one from the following and write the common feature of others:a)Estrogenb)Androgenc)Relaxind)Progestrone
Answer» Estrogen Androgen RELAXIN Progestrone Solution :Relaxin, others are MALE and female sex HORMONES.

Discussion

19550.	Question : Choose the odd man out.
Answer» Runner Rhizome Corm Bulb Solution :Reason: It is a sub AERIAL stem MODIFICATION WHEREAS others are underground stem MODIFICATIONS.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Cigarette smoke contains the carcinogen

Question : CIFA is located at _____.

Question : Chylomicrons are

Question : Chymification of food occurs in:

Question : Chrysophytes are :-

Question : Chromosomes replicate in which stage of meiosis?

Question : Who proposed chromosometheory for heredity ?

Question : Chromosome number is reduced during meiosis because the process consists of :-

Question : Chromosome number in the meiocyte of onion________

Question : Chromosome number in gametes of human being is __________

Question : Chromosome number in meiocyte of Apple is …………(A) 17(B) 34(C) 20(D) 10

Question : Chromosome number in different cell division cycles are shown in the graph :- Mark the option that correctly depicts the number and the process :-

Question : Chromosome is made up of:

Question : Chromosome map is useful for

Question : Chromosomal disorders are caused due to

Question : Chromosomal composition of a human sperm.

Question : Christmas disease is caused due to absence of

Question : Chosse the coorect answer : Chlamydomonas reproduces asexually through

Question : Chosse the incorrect statement.

Question : Chose-pollination requires abiote or biotic agent.

Question : Choroid plexuses of the brain are involved in the production of

Question : Chordie tendinae are made of

Question : Chordates differ from non chordates in having

Question : Chordae tendineae

Question : Choose wrong pair –

Question : Choose wrong combination with respect to the location of enzymes in C_4 plants

Question : Choose the wrong statement regarding AIDS.

Question : Choose the wrong statement in the process of protein synthesis.

Question : Choose the wrong pair.

Question : Choose the wrong match with reference to joits

Question : Choose the wrong match

Question : Choose the word which is different from other words.

Question : Choose the statement which is incorrect about pinocyticreproduction.

Question : Choose the statement which is incorrect about animalviruses.

Question : Choose the statement.

Question :Choose the right one among the statements given below:

Question : Choose the property which directly provide enough energy to cause a confirmational change in F? particle of the ATP synthase enzyme. Which make the enzyme synthesise several molecules of ATP :-

Question : Choose the parts of the world where sponge fishing is practised on a large scale.

Question : Choose the option with correct expression.

Question : Choose the option that correctly identifies 'A' and 'B' from the following figure. .

Question : Choose the option which describes the Aschelminthes with its exclusive features

Question : Choose the odd w.r.t primary air pollutants.

Question : Choose the odd one w.r.t. cryptogams

Question : Choose the odd one w.r.t eukaryotic cells.

Question : Choose the odd one w.r.t. barrier method of contraceptives

Question : choose the odd one out w.r.t class

Question : Choose the odd one out with respect to generic name :-

Question : Choosethe odd one from the following and write the common feature of others:

Question : Choose the odd one from the following and write the common feature of others:a)Estrogenb)Androgenc)Relaxind)Progestrone

Question : Choose the odd man out.