24277 + Interview Questions in Biology in Class 12

1.	Question : Mostlivingorganisms cannotsurvive at temperature above 45^(@)C .Howare somemicrobes able to live in habitats withtemperature exceedin 100^(@)C
Answer» SOLUTION :Suchmocroorganism have MINIUM AMOUNT of freewater intheirbodiesRemovedor WATER providesresistance to HIGHTEMPERATURE.

Discussion

2.	Question : Most living organisms cannot survive at temperatures above 45^@ How are some microbes able to live in habitats with temperatures exceeding 100^@
Answer» Solution :Such microbes are heat tolerant due to some BIOCHEMICAL adaptations as having branched chain heat stable LIPIDS, LOW amount of FREE WATER and heat tolerant enzyme system.

Discussion

3.	Question : Most intensively studied form of Gibberellic acid is
Answer» GA_1 `GA_2` `GA_3` `GA_4` ANSWER :C

Discussion

4.	Question : Most important hormone in post ovulatory phase :
Answer» Progesterone estrogen HCG FSH Answer :A

Discussion

5.	Question : Most important role of auxins is stem - elongation.
Answer» ANSWER :GIBBERELLINS

Discussion

6.	Question : Most important factor to be taken into consideration while constructing pig house particularly in t ropical countries is
Answer» sun LIGHT AIR humidity TEMPERATUE Answer :D

Discussion

7.	Question : Most economic meat making animals is
Answer» YAK pig goat SHEEP Answer :B

Discussion

8.	Question : Most economical and effective method for control of soil pH is applicaton of
Answer» `CaCO_3` `CA(OH)_3` `CaCl_3` `Ca(NO)_3` ANSWER :A

Discussion

9.	Question : Most distinct type of alternation of generation is demonstrated by :-
Answer» Angiosperms Ferns GYMNOSPERMS BRYOPHYTES ANSWER :B

Discussion

10.	Question : Mostdinosaursbecameextinctin
Answer» EARLY TRIASSIC LATE triassic Late jurassic Cretaceous Solution :N//A

Discussion

11.	Question : Most conspicuous alteration of generation occurs in :-
Answer» THALLOPHYTA BRYOPHYTA Pteridophyta SPERMATOPHYTA Answer :C

Discussion

12.	Question : Most delicate stage in the life cycle of angiosperm where maximum mortality is observed is its:
Answer» SEED stage Flowering stage Fruiting stage Seedling stage Solution :N//A

Discussion

13.	Question : Most commonly used substance for industrial production of beer is
Answer» BARLEY WHEAT CORN SUGARCANE molasses Answer :A

Discussion

14.	Question : Most common nitrogen - fixing cyanobacterium of paddy fields is
Answer» Cylindrospermum Aulosria Oscillatoria Nostoc Answer :B

Discussion

15.	Question : Most common cause of death in AIDS patients?
Answer» Tuberculosis Pneumonia Candidiasis Cancer Answer :A

Discussion

16.	Question : Most common cause of Jaundice which is produced by DNA virus :–
Answer» Hepatitis–B Hepatitis–A Megaloblastic anemia Yellow fever Answer :A

Discussion

17.	Question : Most body organs are innervated by
Answer» PARASYMPATHETIC DIVISION of the PNS ANSWER :B

Discussion

18.	Question : Most biodiversity rich zone in India is
Answer» GANGETIC plains Trans-Himalayas Western Ghats Central India Answer :C

Discussion

19.	Question : Most animals that in deep oceanic water are
Answer» PRIMARY CONSUMERS secondary consumers TERTIARY consumers DETRITIVORES SOLUTION :detritivores

Discussion

20.	Question : Most animals are tree dwellers in a :
Answer» CONIFEROUS forest thorn WOODLAND temperate DECIDUOUS forest TROPICAL rain forest SOLUTION :tropical rain forest

Discussion

21.	Question : Most animals are tree dwellers in a:
Answer» Coniferous forest Thorn WOODLAND Temperate DECIDUOUS forest Tropical RAIN forest Answer :D

Discussion

22.	Question : Most active free-living cyanobacteria in rice field for nitrogen-fixation is
Answer» AULOSIRA fertilissima Cylindrospermum Azotobacter Frankia Answer :A

Discussion

23.	Question : Most accepted method of contraception in India is:
Answer» USE of CONDOMS TAKING ORAL pills Use of IUDs Surgical Method Answer :C

Discussion

24.	Question : Most abundant WBCs in blood are
Answer» Lymphocyte Monocytes Neutrophils Basophils Answer :C

Discussion

25.	Question : Most abundant intracellular cation is
Answer» `NA^(+)` `CA^(+)` `H^(+)` `K^(+)` ANSWER :D

Discussion

26.	Question : Most abundant lipid in cell membrane is:
Answer» Phospholipid Starch Oil Sulpholipid Answer :A

Discussion

27.	Question : Most abundant granulocyte of human blood is
Answer» Neutrophil Eosinophil Basophil Monocytes Answer :A

Discussion

28.	Question : Mosses are gregarious because they :-
Answer» Have vascular tissue Have INDIRECT germination of spores Have direct germination of spores Have spore MOTHER CELLS ANSWER :B

Discussion

29.	Question : Moss plant is
Answer» GAMETOPHYTE SPOROPHYTE SOMETIMES gametophyte and sometimes sporophyte Predominantly gametophyte with sporophyte ATTACHED to it. Answer :A

Discussion

30.	Question : Moss protonema resembles an algal filament but can be distinguished fromthe later in having
Answer» lacking CHLOROPLAST oblique septa cellulosic CELL wall COENOCYTIC Answer :B

Discussion

31.	Question : Moss peristome takes part in
Answer» SPORE dispersal photosynthesis protection absorption Solution :(a) Peristome functions in the dispersal of the spores. Peristome CONSTITUTES rings of teeth like projections at he rim of thhe capsuleof the mosses.In FUNARIA, peristome are 32 in NUMBER, arragned in two ringsof 16 each (a) outer exostome and (b) inner endostome.

Discussion

32.	Question : Moss peat is used as a packing material for sending flowers and livingplants to distance places because
Answer» It SERVES as a disinfectant It is EASILY available It is hygroscopic It REDUCES transpiration Answer :C

Discussion

33.	Question : Morula continually divides and forms………….
Answer» Blastomers Blastocyst Trophoblast layer None of the above Answer :B

Discussion

34.	Question : Mosaic endosperm is best seen in:
Answer» Coconut Maize Areca nut Ricinus Solution :N//A

Discussion

35.	Question : Morula is a developmental stage
Answer» Between the zygote and blastocyst Between the blastocyst and gastrula After the IMPLANTATION Between implantation and parturition Solution :The haploid NUCLEUS of sperms and haploid nucleus of ovum (ootid) fuse together and form a diploid zygote. The mitotic division starts as the zygote moves through the isthmus of the oviduct called cleavage towards the uterus and forms 2,4,8,16 daughter cells called BLASTOMERES. The EMBRYO with 8 to 16 blastomeres is called morula. The morula continues to divide and transforms into blastocyst the blastocyst because embedded in the endometrium of the uterus. This is called implantation.

Discussion

36.	Question : Morphologically the white fluffy edible mass in maize is…..(A) seed coat(B) endosperm(C) perisperm(D) seed
Answer» SEED coat endosperm perisperm seed Answer :B

Discussion

37.	Question : Morphologically and physiologically distinct gametes are called as
Answer» isogametes heterogametes gametes iso - SPORES ANSWER :B

Discussion

38.	Question : Morphologically different types of spores are produced by
Answer» LYCOPODIUM and Dryopoteris Lycopodium and salvinia Equisetum and Dryopoteris Selaginella and salvinia Answer :D

Discussion

39.	Question : Morphologically and genetically similar individuals are called
Answer» ANSWER :C

Discussion

40.	Question : Morphologically and genetically similar organisms are called offsprings.
Answer» ANSWER :CLONES

Discussion

41.	Question : Morphogenetic movements take place during
Answer» FORMATION of MORULA Blastulation Gastrulation Organogenesis. ANSWER :C

Discussion

42.	Question : Morphine, which is used as analgesic is obtained from
Answer» CINCHONA officinalis PAPAVER somniferum Taxus brevifolia Berberis nilghiriensis SOLUTION :Papaver somniferum

Discussion

43.	Question : Morphine obtained from opium is
Answer» latex pome alkaloid tannin Answer :C

Discussion

44.	Question : Morphine, which is used as an analgesic is obtained from[a]cinchona officinalis[b]papaver somniferum[c]taxus brevifolia[d]berberis nilghiriensis
Answer» CHINCHONA officinalis papaver somniferum Taxus brevifolia Berberis nilghiriensis Answer :B

Discussion

45.	Question : Morphine is got from:
Answer» CAJANUS cajan Cannabis sativa Papaver somniferum Rauwolfia sepentina Answer :C

Discussion

46.	Question : Morphallaxis is reported in
Answer» Porifers Coelenterates and flatworms Nemarteans and some ascidians All the above Answer :D

Discussion

47.	Question : Morgan observed that the two genes
Answer» Did not SEGREGATE INDEPENDENTLY to each other Segregated independently to each other F2 ratio was same as 9:3:3:1 Both (b) and (C) Answer :A

Discussion

48.	Question : Morphine obtained from opium is ………………..
Answer» latex pome ALKALOID tannin SOLUTION :alkaloid

Discussion

49.	Question : Morgan coined the term linkage to describe
Answer» GENERATION of non-PARENTAL gene COMBINATIONS Association of genes on a chromosome Physical status of gene combinations Generation of parental gene combinations ANSWER :B

Discussion

50.	Question : Morgan et.al were able to construct chromosome maps showing the relative location of many genes.
Answer» ANSWER :1

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : Mostlivingorganisms cannotsurvive at temperature above 45^(@)C .Howare somemicrobes able to live in habitats withtemperature exceedin 100^(@)C

Question : Most living organisms cannot survive at temperatures above 45^@ How are some microbes able to live in habitats with temperatures exceeding 100^@

Question : Most intensively studied form of Gibberellic acid is

Question : Most important hormone in post ovulatory phase :

Question : Most important role of auxins is stem - elongation.

Question : Most important factor to be taken into consideration while constructing pig house particularly in t ropical countries is

Question : Most economic meat making animals is

Question : Most economical and effective method for control of soil pH is applicaton of

Question : Most distinct type of alternation of generation is demonstrated by :-

Question : Mostdinosaursbecameextinctin

Question : Most conspicuous alteration of generation occurs in :-

Question : Most delicate stage in the life cycle of angiosperm where maximum mortality is observed is its:

Question : Most commonly used substance for industrial production of beer is

Question : Most common nitrogen - fixing cyanobacterium of paddy fields is

Question : Most common cause of death in AIDS patients?

Question : Most common cause of Jaundice which is produced by DNA virus :–

Question : Most body organs are innervated by

Question : Most biodiversity rich zone in India is

Question : Most animals that in deep oceanic water are

Question : Most animals are tree dwellers in a :

Question : Most animals are tree dwellers in a:

Question : Most active free-living cyanobacteria in rice field for nitrogen-fixation is

Question : Most accepted method of contraception in India is:

Question : Most abundant WBCs in blood are

Question : Most abundant intracellular cation is

Question : Most abundant lipid in cell membrane is:

Question : Most abundant granulocyte of human blood is

Question : Mosses are gregarious because they :-

Question : Moss plant is

Question : Moss protonema resembles an algal filament but can be distinguished fromthe later in having

Question : Moss peristome takes part in

Question : Moss peat is used as a packing material for sending flowers and livingplants to distance places because

Question : Morula continually divides and forms………….

Question : Mosaic endosperm is best seen in:

Question : Morula is a developmental stage

Question : Morphologically the white fluffy edible mass in maize is…..(A) seed coat(B) endosperm(C) perisperm(D) seed

Question : Morphologically and physiologically distinct gametes are called as

Question : Morphologically different types of spores are produced by

Question : Morphologically and genetically similar individuals are called

Question : Morphologically and genetically similar organisms are called offsprings.

Question : Morphogenetic movements take place during

Question : Morphine, which is used as analgesic is obtained from

Question : Morphine obtained from opium is

Question : Morphine, which is used as an analgesic is obtained from[a]cinchona officinalis[b]papaver somniferum[c]taxus brevifolia[d]berberis nilghiriensis

Question : Morphine is got from:

Question : Morphallaxis is reported in

Question : Morgan observed that the two genes

Question : Morphine obtained from opium is ………………..

Question : Morgan coined the term linkage to describe

Question : Morgan et.al were able to construct chromosome maps showing the relative location of many genes.