24277 + Interview Questions in Biology in Class 12 Page 140 InterviewSolution

6951.	Question : The cell-mediated immunity inside the human body is carried out by
Answer» T-lymphocytes B-lymphocytes thrombocytes erythrocytes Solution :T-lymphocytes

Discussion

6952.	Question : The 1 : 2 : 1 ratio with the pink flower In the F_1 -generation indicate the phenomenon of
Answer» dominance codominance incomplete dominance Segregation Answer :C

Discussion

6953.	Question : The 1 : 2 : 1 ratio of co - dominance process Mendel's .............
Answer» Law of dominance Law of RECESSIVENESS Law of SEGREGATION Law of independent ASSORTMENT ANSWER :B

Discussion

6954.	Question :The cell organelle participating in photorespiration is:
Answer» Lysosome Golgi complex Peroxisome Glyoxysome Answer :C

Discussion

6955.	Question : That an enzyme interacts with specific substrate is explained by
Answer» Enzyme-substrate CONCEPT DESTROYED and resynthesized concept Lock and KEY concept ACTIVATION ENERGY concept. Solution :N//A

Discussion

6956.	Question : The cell envelop in bacteria consists of :-
Answer» Loosely bound THREE LAYERED structures Tightly bound three layered LIVING structures Tightly bound three layered non-living and living structures Tightly bound three layered NONLIVING structures Answer :C

Discussion

6957.	Question : Thalassemia and sickle-cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement.
Answer» A.Both are due to a qualitative defect in global CHAIN SYNTHESIS. B.Both are due to a QUANTITATIVE defect in globin chain synthesis. C. Thalassemia is due to LESS synthesis of globin molecules D. Sickle-cells anaemia is due to a quantitative problem of globin molecules Solution :Thalassemia is due to less synthesis of globin molecules

Discussion

6958.	Question : Thalassemia and sickle cell anaemia are caused due to a problem including molecules synthesis. select the correct statement.
Answer» sickle CELL ANAEMIA is due to a quantitative PROBLEM in globin molecules both are due to our qualitative defect in globin chain SYNTHESIS both are due to a quantitative defect in globin chain synthesis thalassemia is due to LESS synthesis of globin molecules Answer :D

Discussion

6959.	Question : The cell functionally associated with sieve tube element is -
Answer» PHLOEM fibres Phloem Parenchyma Companion cell Collenchyma Answer :C

Discussion

6960.	Question : Thalassemia and haemophilia categorised as Mendelian disorders.
Answer» Solution :THALASSEMIA and haemophilia categorised as Mendelian disorders because these disorders are DUE to ALTERATION in a single gene. Also they are TRANSMITTED to OFFSPRINGS through Mendelian principles of inheritance.

Discussion

6961.	Question : The cell division involved in gamete formation is not of the same type in different organisms. Justify.
Answer» Solution :In a haploid organism, SHOWING haplontic life cycle, gamete formation by mitosis, the diploidzygote FORMED by the fusion of TWO haploid gametes undergoes MEIOSIS. In diploid organisms, showing diplontic or haplo-diplontic life cycle, gamete formation by meiosis and haploid gametes are formed, the diploid zygote undergoes mitosis to FORM diploid individuals.

Discussion

6962.	Question : Thalamus of hypogynous ovary is
Answer» Convex Concave Flat with PARTLY CUP shaped None of these Answer :A

Discussion

6963.	Question : Thecell division involved' in gamete formation is not of the same type in different organisms. Justify.
Answer» Solution :The parents may be haPloid or diploid but the gametes always have to be haploid. Diploid parents UNDERGO MEIOSIS to PRODUCE haploid gametes. WHEREAS, haploid parents undergo mitOSis to produce haploid gametes

Discussion

6964.	Question : Thalamus grows to enclose overy and other parts arise above the overy in condition
Answer» Hypogynous Perigynous Epigynous None of thee Answer :C

Discussion

6965.	Question : Thalamus grows over and fuses with overy in
Answer» SUPERIOR HALF superior Half INFERIOR Inferior. Answer :D

Discussion

6966.	Question : The cavity formed outside the guard cells of leaf is named as
Answer» substomatal cavity epistomatal cavity amphistomatic cavtiy None of these Answer :B

Discussion

6967.	Question : Tetrasporic embryosac is one in which(A) four microspores form the embryosac(B) four megaspore mother cell form embryosac(C) Four megaspore form the embryosac(D) Four microspore mother cell form the embryosac
Answer» four microspores FORM the embryosac four MEGASPORE mother CELL form embryosac Four megaspore form the embryosac Four MICROSPORE mother cell form the embryosac Answer :A

Discussion

6968.	Question : Tetraploid plants cause loss to the farmer.
Answer» SOLUTION :false,CORRECT STATEMENT:Tetraploid plants are advatageous to the FARMER.

Discussion

6969.	Question : The cause of seed dormancy in Lepidium is
Answer» the presence coumorin which seed GERMINATION immaturity of embryo at the time of seed germination MECHANICAL resistance of seed COAT the presence of high CONCENTRATION of salt in the seed at the time of SHEDDING Answer :C

Discussion

6970.	Question : Tetradynamous condition has
Answer» Six STAMENS, TWO SHORT and four long Six stamens, two long and four short Six stamens, two short in outer whorl and four long in inner whorl Four stamens, two short and two long in outer and inner whorls respectively. Answer :C

Discussion

6971.	Question : The causative organism of downy mildew in cereals is
Answer» PYTHIUM debaryanum Peronospora parasitica Sclerospora glaminicola Saprolegnia Answer :C

Discussion

6972.	Question : Testosterone - Projesterone
Answer» Solution :Testosterone : It is a male sex hormone. It INDUCES male sex charaters. Projesterone : It is a FEMALE sex hormone. It prepares inner wall of UTERUS for IMPLANTATION.

Discussion

6973.	Question : Tetracycline is obtained from..........
Answer» a) S.nodous B) S.aurofaciens C) S.grise d) P.chryosogenum ANSWER :B

Discussion

6974.	Question : The cation is necessary for blood clotting is _____.
Answer» ANSWER :`CA^(++)`

Discussion

6975.	Question : Testosterone is secreted by......
Answer» Sertoli cells Leydid cells Follicle cells Seminiferous tissue Answer :B

Discussion

6976.	Question : The causative agent of filaria is
Answer» WUCHERERIA bancrofti LEISHMANIA donovani PLASMODIUM vivax Trypanosoma gambiens SOLUTION :Wuchereria bancrofti

Discussion

6977.	Question : testosterone is secreted by:
Answer» mast cell sertoli CELLS KUPFFER cells LEYDIG's cells ANSWER :B

Discussion

6978.	Question : Testosteron :
Answer» SOLUTION :It is a MALE sex hormone. It STIMULATES sex CHARACTER of a male.

Discussion

6979.	Question : The caste that develosps by parthenogenesis inhoneybee is
Answer» queen drones (FERTILE males ) WORKERS none of these ANSWER :B

Discussion

6980.	Question : Testis performs dual functions by acting as
Answer» Endocrine gland Primary SEX organ Stimulate immune system Both (1) & (2) Answer :D

Discussion

6981.	Question : The casparian strip is found in
Answer» Endosperm Endodermis of the ROOT Pericycle Pith Answer :B

Discussion

6982.	Question : Testis and ovary
Answer» SOLUTION :

Discussion

6983.	Question : Testis of Whale are
Answer» EXTRA ABDOMINAL Half EXTERNAL, half INTERNAL Internal None of the above. Answer :C

Discussion

6984.	Question : The carbon skeletons produced during respiration are used as precursors for biosynthesis of other molecules in the cell. In the light of above statement what could be said about respiration ?
Answer» Respiration is a multistep process Respiration is an amphibolic pathway During respiration, COMPLEX sugars are SYNTHESISED from SIMPLE sugars Carbohydrates, fats, sugars or AMINO acids can serve as respiratory substrate Answer :B

Discussion

6985.	Question : Testis are located in the scrotum outside the abdominal cavity.
Answer» Solution :By the process of spermatogenesis of testes, SPERMATIDS and spermatozoa are formed. For this whole process the TEMPERATURE of tesis is below `3^(@)C` than the body temperature. It is necessary for spermatogenesis. The scrotum helps in maintaining the low temperature of TESTIS.

Discussion

6986.	Question : The cardiac impules that results into the heart beat is delayed at :
Answer» Internodal tract AV node Bundle of His Purkinje fibres Answer :B

Discussion

6987.	Question : Testis
Answer» Solution :Location : It is LOCATED in SCROTUM in male. FUNCTION : PRODUCES sperms and male sex hormone.

Discussion

6988.	Question : The capacity to generate a whole plant from any cell/explant is called ………..
Answer» Somaclones Micropropagation Totippotency Meristem ANSWER :C

Discussion

6989.	Question : Testicular hormones like androgens are synthesized by(A) Spermatogonia(B) Leydig cells(C) Sertoli cells(D) Spermatozoa
Answer» Spermatogonia Leydig CELLS Sertoli cells Sermatozoa ANSWER :B

Discussion

6990.	Question : The cancer patients are given substance called biological response modifiers such as ……..
Answer» `gamma`-INTERFERON `beta`-Interferon `ALPHA`-Interferon `Delta`-Interferon Answer :C

Discussion

6991.	Question : Testicular hormones called androgens are synthesized by
Answer» sertoli cells germ cells Leydig cells \ Answer :C

Discussion

6992.	Question : In rabbit a pair of testes are enclosed by _________ .
Answer» SOLUTION :secrotum

Discussion

6993.	Question : The cancer of the epithelial cells is called
Answer» LEUKEMIA lipoma sarcoma carcinoma Answer :D

Discussion

6994.	Question : Testes develop from
Answer» MEDULLA of EMBRYONIC GONADS CORTEX of embryonic gonads None of the above Answer :A

Discussion

6995.	Question : The C_((5))^frownA_5 condition is found in the floral formula or family
Answer» Liliaceae Poaceae Fabaceae Solanaceae Answer :D

Discussion

6996.	Question : Testes descend into scrotum in mammals for :
Answer» Spermatogenesis Fertilization Development of SEX organ None of these Answer :A

Discussion

6997.	Question : The calender of earth's past history is called geological time scale.Name the four eras of geological timescale.
Answer» SOLUTION :Coenozoic ERA,MESOZOIC era,PALAEOZOIC era and PRECAMBRIAN era.

Discussion

6998.	Question : Testes are masses of units of
Answer» Uriniferous tubule Malpighian tubule Vas deferens Seminiferous tubule Answer :D

Discussion

6999.	Question : The C_4plants are Photosynthetically more efficient than C_3 plants because
Answer» The carbon dioxide COMPENSATION points is more Carbon dioxide GENERATED during Photorespiraition is trapped and recycled through PEP CARBOXYLASE The carbon dioxide EFFLUX is not Prevented They have more chloroplasts Answer :B

Discussion

7000.	Question : Testerone is secreted by
Answer» Sertoli CELLS Leydig/interstitial cells SEMINIFEROUS cells All the above. ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The cell-mediated immunity inside the human body is carried out by

Question : The 1 : 2 : 1 ratio with the pink flower In the F_1 -generation indicate the phenomenon of

Question : The 1 : 2 : 1 ratio of co - dominance process Mendel's .............

Question :The cell organelle participating in photorespiration is:

Question : That an enzyme interacts with specific substrate is explained by

Question : The cell envelop in bacteria consists of :-

Question : Thalassemia and sickle-cell anaemia are caused due to a problem in globin molecule synthesis. Select the correct statement.

Question : Thalassemia and sickle cell anaemia are caused due to a problem including molecules synthesis. select the correct statement.

Question : The cell functionally associated with sieve tube element is -

Question : Thalassemia and haemophilia categorised as Mendelian disorders.

Question : The cell division involved in gamete formation is not of the same type in different organisms. Justify.

Question : Thalamus of hypogynous ovary is

Question : Thecell division involved' in gamete formation is not of the same type in different organisms. Justify.

Question : Thalamus grows to enclose overy and other parts arise above the overy in condition

Question : Thalamus grows over and fuses with overy in

Question : The cavity formed outside the guard cells of leaf is named as

Question : Tetrasporic embryosac is one in which(A) four microspores form the embryosac(B) four megaspore mother cell form embryosac(C) Four megaspore form the embryosac(D) Four microspore mother cell form the embryosac

Question : Tetraploid plants cause loss to the farmer.

Question : The cause of seed dormancy in Lepidium is

Question : Tetradynamous condition has

Question : The causative organism of downy mildew in cereals is

Question : Testosterone - Projesterone

Question : Tetracycline is obtained from..........

Question : The cation is necessary for blood clotting is _____.

Question : Testosterone is secreted by......

Question : The causative agent of filaria is

Question : testosterone is secreted by:

Question : Testosteron :

Question : The caste that develosps by parthenogenesis inhoneybee is

Question : Testis performs dual functions by acting as

Question : The casparian strip is found in

Question : Testis and ovary

Question : Testis of Whale are

Question : The carbon skeletons produced during respiration are used as precursors for biosynthesis of other molecules in the cell. In the light of above statement what could be said about respiration ?

Question : Testis are located in the scrotum outside the abdominal cavity.

Question : The cardiac impules that results into the heart beat is delayed at :

Question : Testis

Question : The capacity to generate a whole plant from any cell/explant is called ………..

Question : Testicular hormones like androgens are synthesized by(A) Spermatogonia(B) Leydig cells(C) Sertoli cells(D) Spermatozoa

Question : The cancer patients are given substance called biological response modifiers such as ……..

Question : Testicular hormones called androgens are synthesized by

Question : In rabbit a pair of testes are enclosed by _________ .

Question : The cancer of the epithelial cells is called

Question : Testes develop from

Question : The C_((5))^frownA_5 condition is found in the floral formula or family

Question : Testes descend into scrotum in mammals for :

Question : The calender of earth's past history is called geological time scale.Name the four eras of geological timescale.

Question : Testes are masses of units of

Question : The C_4plants are Photosynthetically more efficient than C_3 plants because

Question : Testerone is secreted by