24277 + Interview Questions in Biology in Class 12

1.	Question : Ca, Mg, Cu and K deficiency leads to
Answer» CHLOROSIS in LEAF tissue Necrosis or DEATH of HOST tissue Delayed flowering Stunted growth Answer :B

Discussion

2.	Question : C_4 plants show _____ anatomy.
Answer» ANSWER :KRANZ

Discussion

3.	Question : C4 cycle is also called Calvin cycle
Answer» ANSWER :HATCH and SLACK

Discussion

4.	Question : C_4 plants have higher net photosysnthetic rate because
Answer» They have no photorespiration They have PEP as `CO_2` ACCEPTOR They can PHOTOSYNTHESIZE in low light INTENSITY They have KRANZ type of anatomy Answer :A

Discussion

5.	Question : C_4 plants differ from C_3 plants with respectto:
Answer» FIRST product Substrate which ACCEPTS `C0_2` NUMBER of ATP molecules consumed All of the above Answer :D

Discussion

6.	Question : C_(4) plants consume _____ NADPH molecules to fix 2CO_(2) , and C_(3) plants requires _____ molecules of NADPH for same amount of CO_(2)
Answer» 8,8 4,4 8,12 12,8 Answer :B

Discussion

7.	Question :C_4 Plants can tolerate saline conditions due to
Answer» Occurrence of ORGANIC ACIDS Absence of Photorespiraition PRESENC rod PEP carboxylase enzyme PRESENCE of PEP Carboxylase enzyme Answer :A

Discussion

8.	Question : C_4-plants are well adapted to
Answer» DRY TROPICAL region Temperate regions Arctic regions Low temperature Answer :A

Discussion

9.	Question : C_(4) plants are more efficient than C_(3) plants because of ……….. .
Answer» DOUBLE `CO_(2)` fixation Kranz anatomy presence of OAA presence of PYRUVIC acid Answer :A

Discussion

10.	Question : C_4Plants are more efficient Photosynthesis than C_3plants due to
Answer» HIGHER LEAF area PRESENCE of large number of CHLOROPLAST in the leaf cells Presence of THIN cuticle Lower rate of photorespiraition Answer :D

Discussion

11.	Question : C_4 plants are found among
Answer» Dicots only Monocots only Both (1) and (2) In family - Poaceae (Gramineae ) only Answer :C

Discussion

12.	Question : C_4 plants are different from C_3 plants with reference to
Answer» The SUBSTRATE that accepts `CO_2` in carbon assimilation Type of end products of PHOTOSYNTHESIS Number of ATP consumed in the SYNTHESIS of sugar The type of pigments INVOLVED in Photosynthesis Answer :A

Discussion

13.	Question : C_(4) plants and CAM plants.
Answer» SOLUTION :

Discussion

14.	Question : C_4 plants among the following are
Answer» Maize Sugarcane OPUNTIA 1 & 2 ANSWER :D

Discussion

15.	Question : C_4 cycle was first discovered in
Answer» SACCHARUM Sorghum Maize Finger millet Answer :A

Discussion

16.	Question : C_4 cycle takes place in:
Answer» RICE Sugarcane Wheat Cotton Answer :B

Discussion

17.	Question : C_(3) plants have been used as greenhouse crops for higher yields because :-
Answer» These plants show `CO_(2)` SATURATION at about `360 mu 1L^(–1)` Current availability of `CO_(2)` levels is LIMITING to `C_(3)` plants These plants are PHOTOSYNTHETICALLY efficient than `C_(4)` plants `C_(3)` plants loses LESS water as compare to `C_(4)` plants Answer :B

Discussion

18.	Question : C_(3) plants show saturation of photosynthetic reaction at about :-
Answer» 500 ppm of `CO_(2)` 360 ppm of `CO_(2)` ` gt`450 ppm of `CO_(2)` 1000 ppm of `CO_(2)` Answer :C

Discussion

19.	Question : C_3 plants among the following are
Answer» CHLORELLA TOMATO BELL PEPPER All Answer :D

Discussion

20.	Question : C_3 cycle was first studies in a plant of A group in plant kingdom & C_4cycle was first studied in a plant of B group in plant kingdom A & B respectively are
Answer» DICOT , monocot ALGAE, ANGIOSPERMS Monocot, dicot Angiosperms,BROWN alga Answer :B

Discussion

21.	Question : C) What is sexual deceit ?
Answer» SOLUTION :One PETAL of ophrys resembles female bee in size. So MALE bee pseudocopulates with the flower. It is KNOWN as sexual deceit.

Discussion

22.	Question : C-value is the characteristic DNA content in a haploid cell of a given species. Earlier it wasconsidered that C-value correlates with organism complexity. However, it is now evident that C-value varies enormously among species and this bears no correlation with the complexity of the organisms . For example, the cells of some salamanders may contain 40 times more DNA than those of humans. Which of the following explains thisC-value paradox?
Answer» Polyploidy Chromosomal mutation Non-coding DNA Coding DNA Answer :C

Discussion

23.	Question : C-value paradox refers to the presence of
Answer» LESS number of RNA polymerase than NEEDED for RNA synthesis Larger number of RIBOSOMES than needed for plypeptide synthesis Less number of t-RNA than needed for polypeptide formation More DNA than needed for coding Answer :D

Discussion

24.	Question : C-peptide of human insulin is:
Answer» A part of MATURE insulin molecule Responsible for formation of disulphide bridges Removed during MATURATION of proinsulin to insulin Responsible for its BIOLOGICAL activity Answer :C

Discussion

25.	Question : C-peptide of human insulin is
Answer» a part of mature INSULIN molecule responsible for formation of disulphide bridges removed during maturation of pro-insulin to insulin responsible for its biological activity Solution :In mammales, including HUMANS, insulin is synthesised as pro-hormone which needs to b processed before it becomes a fully mature and functional hormone. It CONTAINS an extra stretch called C PEPTIDE which is removed during maturation into insulin.

Discussion

26.	Question :C-peptide of human insulin is(A) a part of mature insulin molecule(B) Responsible for formation of disulfide bridges(C) Removed during maturation of pro-insulin to insulin(D) Responsible for it biological activity
Answer» A PART of mature insulin molecule Responsible for formation of disulphide bridges Removed during maturation of pro-insulin to insulin Responsible for its BIOLOGICAL ACTIVITY. Solution :C-peptide of human insulin is removed during maturation of pro-insulin to insulin. It is a SHORT protein containing 51 amino acids connecting the .A. and .B. chains of human insulin.

Discussion

27.	Question : C, H, O and N are called structural elements
Answer» They are essential to all PLANTS They are required in all BIOCHEMICAL REACTIONS in plants They are invariably present in all biomolecules They associate with prosthetic group of enzymes, catalysing synthesis of biomolecules. Answer :C

Discussion

28.	Question : c - DNA probes are copied from the messenger RNA molecules with the help of :
Answer» RESTRICTION enzymes Reverse transcriptase DNA polymerase Adenosine deaminase Answer :D

Discussion

29.	Question :C - Change in bowel or bladder A- A sore which does not heal U - Unusual bleeding or discharge T - Thickening or lump in the breast or elsewhere I - Indigestion or difficulty in swallowing O- Obvious change in wart or mole N - Nagging cough These are the symptoms of a disease. a. Name the disease. b. What is oncology? c. What are oncogenes?
Answer» Solution :a. CANCER b. Study of cancer C. Cancer INDUCING GENES

Discussion

30.	Question : c-DNA means…….
Answer» COILED DNA cytoplasmic DNA COMPLEMENTARY DNA circular DNA Answer :C

Discussion

31.	Question : By whom the recombinant DNA was prepared for the first time ?
Answer» Stanle Cohen Herbert Boyer Tamin and BALTIMORE (A) & (B) SOLUTION :(A) & (B)

Discussion

32.	Question : Name a microbe used for the production of Swiss cheese.
Answer» ASPERGILLUS NIGER Acetobactor aceti CLOSTRIDIUM Butyricum Propioni bacterium Sharmanii Solution :Propioni bacterium Sharmanii

Discussion

33.	Question : By whose formation the foreign particles are destroyed ?
Answer» IGM IgA IgM & IgG MACROPHAGES SOLUTION :Macrophages

Discussion

34.	Question : By whom ring worm infection occurs ?
Answer» FUNGUS Algae Bacteria Virus SOLUTION :Fungus

Discussion

35.	Question : By which unit intensity of air pollutants are measured ?
Answer» Gram/`CM^(3)` Microgram/`"Meter"^(3)` MILIGRAM/`"meter"^(3)` Miligram/`"KILOMETER"^(3)` · Answer :B

Discussion

36.	Question : What is Elephantiasis or Filariasis, mention its causative, symptoms and mode of transmission ?
Answer» TSETSE fly Sand fly Anopheles CULEX fatigon SOLUTION :Culex fatigon

Discussion

37.	Question : By which process are T cells and B cells produced?
Answer» Solution :T CELLS and B cells are produced from the stem cells in the bone marrow, by the PROCESS of HAEMATOPOIESIS.

Discussion

38.	Question : By which process ammonia is converted into urea in liver ?
Answer» SOLUTION :Ammonia is CONVERTED into UREA in liver by a process CALLED ORNITHINE cycle.

Discussion

39.	Question : By which process amino acids formed in primitive earth '/
Answer» By U.V LIGHT By LIGHTNING The TEMP. of earth Both (A) and (B) SOLUTION :Both (A) and (B)

Discussion

40.	Question : By which of the following method cytokinins leads to delay in leaf senescence ?
Answer» NUTRIENT Immobilisation Nutrient Mobilisation By PREVENTING ABA synthesis By PROMOTING Auxin synthesis Answer :B

Discussion

41.	Question : By which process active immunity to the diseases can be induced in the body.
Answer» ANSWER :Vaccination/immunisation

Discussion

42.	Question : By which of the following the earth is protected from UV rays?
Answer» OZONE layer Carbon monoxide Oxygen Carbon DIOXIDE ANSWER :A

Discussion

43.	Question : By which of the following methods, new and better varieties of plants can be formed?
Answer» Selection Grafting Hybridisation Hybridisation FOLLOWED by selection Answer :D

Discussion

44.	Question : By which modern technique disputed parentages are solved?
Answer» ANSWER :DNA FINGERPRINTING

Discussion

45.	Question : By which method production of inbreed variety is increased ?
Answer» INTERSPECIFIC hybridization Outbreeding INBREEDING All the above SOLUTION :Inbreeding

Discussion

46.	Question : By which method, the hybrid plantlets of the interpecific plants can be obtained ?
Answer» SUSPENSION CULTURE Callus culture Seed culture EMBRYO culture Solution :Embryo culture

Discussion

47.	Question : By which method, plantlet can be developed from the seeds, which are in dormant condition for longer time?
Answer» Explant Suspension CULTURE CALLUS culture EMBRYO CULTUR Solution :Embryo cultur

Discussion

48.	Question : By which method the measurement of oxygen essential for degradation of organic biodegradable substances in water is made ?
Answer» BOM COD BOD BOR Answer :C

Discussion

49.	Question : By which method DNA fragments that are cut by restriction enzyme are separated ?
Answer» Centrifugation ELECTROPHORESIS Polymerase CHAIN REACTION Enzymatic measurement SOLUTION :Electrophoresis

Discussion

50.	Question : By which medium gametes of algae, bryophytes and pteridophytes move ?
Answer» AIR Water Lipids TISSUE ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : Ca, Mg, Cu and K deficiency leads to

Question : C_4 plants show _____ anatomy.

Question : C4 cycle is also called Calvin cycle

Question : C_4 plants have higher net photosysnthetic rate because

Question : C_4 plants differ from C_3 plants with respectto:

Question : C_(4) plants consume _____ NADPH molecules to fix 2CO_(2) , and C_(3) plants requires _____ molecules of NADPH for same amount of CO_(2)

Question :C_4 Plants can tolerate saline conditions due to

Question : C_4-plants are well adapted to

Question : C_(4) plants are more efficient than C_(3) plants because of ……….. .

Question : C_4Plants are more efficient Photosynthesis than C_3plants due to

Question : C_4 plants are found among

Question : C_4 plants are different from C_3 plants with reference to

Question : C_(4) plants and CAM plants.

Question : C_4 plants among the following are

Question : C_4 cycle was first discovered in

Question : C_4 cycle takes place in:

Question : C_(3) plants have been used as greenhouse crops for higher yields because :-

Question : C_(3) plants show saturation of photosynthetic reaction at about :-

Question : C_3 plants among the following are

Question : C_3 cycle was first studies in a plant of A group in plant kingdom & C_4cycle was first studied in a plant of B group in plant kingdom A & B respectively are

Question : C) What is sexual deceit ?

Question : C-value paradox refers to the presence of

Question : C-peptide of human insulin is:

Question : C-peptide of human insulin is

Question :C-peptide of human insulin is(A) a part of mature insulin molecule(B) Responsible for formation of disulfide bridges(C) Removed during maturation of pro-insulin to insulin(D) Responsible for it biological activity

Question : C, H, O and N are called structural elements

Question : c - DNA probes are copied from the messenger RNA molecules with the help of :

Question : c-DNA means…….

Question : By whom the recombinant DNA was prepared for the first time ?

Question : Name a microbe used for the production of Swiss cheese.

Question : By whose formation the foreign particles are destroyed ?

Question : By whom ring worm infection occurs ?

Question : By which unit intensity of air pollutants are measured ?

Question : What is Elephantiasis or Filariasis, mention its causative, symptoms and mode of transmission ?

Question : By which process are T cells and B cells produced?

Question : By which process ammonia is converted into urea in liver ?

Question : By which process amino acids formed in primitive earth '/

Question : By which of the following method cytokinins leads to delay in leaf senescence ?

Question : By which process active immunity to the diseases can be induced in the body.

Question : By which of the following the earth is protected from UV rays?

Question : By which of the following methods, new and better varieties of plants can be formed?

Question : By which modern technique disputed parentages are solved?

Question : By which method production of inbreed variety is increased ?

Question : By which method, the hybrid plantlets of the interpecific plants can be obtained ?

Question : By which method, plantlet can be developed from the seeds, which are in dormant condition for longer time?

Question : By which method the measurement of oxygen essential for degradation of organic biodegradable substances in water is made ?

Question : By which method DNA fragments that are cut by restriction enzyme are separated ?

Question : By which medium gametes of algae, bryophytes and pteridophytes move ?