24277 + Interview Questions in Biology in Class 12

1.	Question : In which organ the growth of pollen tube is observed, till it reaches the ovary?
Answer» Pollen cells STYLE OVARY STIGMA ANSWER :B

Discussion

2.	Question : In which one of these the elaters are present along with mature spores in the capsule (to help in spore dispersal)?
Answer» Riccia Marchantia Funaria Sphagnum Solution :(b) In Marchantia, capsule (the part of sporophyte) contains elaters (2n)and spores (n) in tetrads. Elaters are diploid, spindle SHAPED hygroscopic elongated structures with 2 spiral bands. They SHOW twisting movement and ASSIST in spore dispersal on MATURITY.

Discussion

3.	Question : In which one of the following would you expect to find glyoxysomes
Answer» ENDOSPERM of wheat Endosperm of CASTOR PALISADE CELLS in leaf Root hairs Answer :B

Discussion

4.	Question : In which pair both the plants can be vegetatively propagated by leaf pieces ?
Answer» BRYOPHYLLUM and Kalanchoe Chrysanthemum and Kalanchoe Agave and Kalanchoe Asparagus .and Bryophyllum Answer :A

Discussion

5.	Question : In which one of the following the genus name,its two characters and its class/phylum are correctly matched?
Answer» Genus name-Aurella, Two characters-(a) CNIDOBLASTS, (B) organization, Class/phylum-coelenterata Genus-Ascaris, Two characters-(a) Body segmented, (b) Females distinct, Class/phylum-Amphibia Genusname-Pteropus, Two characters-(a) Skin possesses hair, (b) Oviparous, Class/phylum-Mammalia Answer :C

Discussion

6.	Question : In which one of the following the BOD (Bio-chemical Oxygen Demand) of Sewage (S), distillery effluent (DE(, paper milleffluent (PE) and sugar mill effluent (SE) have been arranged in ascending order:
Answer» `SeltPeltSltDE` `SltDEltPEltSE` `SEltSltPtltDE` ANSWER :B

Discussion

7.	Question : In which one of the following the BOD (Biochemical Oxygen Demand ) of sewage (S), distillery effluent (DE), paper mill effluent(PE) and sugar mill effluent (SE) have been arranged in ascending order ?
Answer» SE < PE< S < DE PE < S < SE < DE S < DE < PE < SE SE < S < PE < DE Answer :B

Discussion

8.	Question : In which one of the following processes CO_(2) is not released?
Answer» AEROBIC respiration in plants Aerobic respiration in animals ALCOHOLIC FERMENTATION Lactate fermentation ANSWER :D

Discussion

9.	Question : In which one of the following pollination is autogamous?(A) Xenogamy(B) Chasmogamy(C) cleistogamy(D) Geitonogamy
Answer» Xenogamy Chasmogamy cleistogamy Geitonogamy Answer :C

Discussion

10.	Question : In which one of the following options the two examples are correctly matched with their particular type of immunity ?
Answer» `{:("EXAMPLESTYPE of immunity"),("POLYMORPHONUCLEAR leucocytes andmonocytesCellular barriers"):}` `{:("ExamplesType of immunity"),("Anti-tetanus and anti-snake BITE injectionsActive immunity"):}` `{:("ExamplesType of immunity"),("Saliva in MOUTH and tears in eyePhysical barriers"):}` `{:("ExamplesType of immunity"),(underset(underset("The HCl in stomach")("urinoigential tract and"))("Muscus coating of epthelium lining the")"Physiological barriers"):}` Answer :A

Discussion

11.	Question : In which one of the following, male and female gametophytes don't have free living independent existence?
Answer» Pteris Funaria Polytrichum Cedrus Solution :(a) In Pteris (also Dryopteris) the spore germinates to produce the prothallus. The prothallus is a small, green flat, SURFACE loving, thallus-like object. It is monoecious and bears sex organs on the ventral side. The aantheridia (male sex organs) arise amongthe rhizoida towards the posterior side of the prothallus and are emergent.The ARCHEGONIA develop in central cushion behind the apical notch.In these plants male and female, gametophytes do have free livingindependent existence.All species of Polytrichum are dioecious.The antheridia and archegonia are borne ondifferent gametophore.The plant body is an erect leafy shootbut is not the entire gametophyte.The leafy shoot arise from protonema (the JUVENILE stage).The leafy gametophore of Funaria REPRODUCES sexually by formation of antheridia and archegonia. The antheridia are formed at the summit of a relatively small, THIN, leafy shoot, whichdevelops first. The female branch arises later as a lateral outgrowth from the base of parent male shoot.Cedrus is a gymnosperm in which mainplant body is a sporophyte on which reduced type of gametophytes are formed.

Discussion

12.	Question : In which one of the following habitat, does the diurnal temperature of soil surface vary most?
Answer» Forest Desert Grassland Shrub land Answer :B

Discussion

13.	Question : In which one of the following combinaations (a-d) of the number of chrmosomer is thepresent day hexaploid wheat correctly represented ?
Answer» `{:("COMBINATION Monosomic","Haploid","Nullisomic","Trisomic"),(21,28,42,43):}` `{:("Combination Monosomic","Haploid","Nullisomic","Trisomic"),(7,28,40,42):}` `{:("Combination Monosomic","Haploid","Nullisomic","Trisomic"),(21,7,42,43):}` `{:("Combination Monosomic","Haploid","Nullisomic","Trisomic"),(41,21,40,43):}` Solution :The PRESENT oday wheat is heaxaploid, knwn as trictical (2n=42) with 3 GENOMES A and B and D i.e, AABBDD. The 3 genomes are obtained from 3 different dploid species. (i)Triticum aegilkopoids `-A A(2n=4)` (ii) Aegilops speltroides `-BB(2n=14)` (iii) Aegilops squarossa -DD(2n=14) By crossing of first two diploids sps Trictricum dicoccoids (2n=28) i.e., tetraploid is produced AABB which an crossing with third species gives rise to Tricticum oestivuym (2n=42) hexaploid (AABBDD). So its haploid set will have 21 CHROMOSOMES. monosomic (2n-1) will have 41 chromosomes. nullisomic (2n-2) will have 43 chromosomes, and trisomic (2n+1)will have 43 chromosomes,

Discussion

14.	Question : in which one of the following combinations (1-4) o fthe number of chromoses is the present day hexaploid wheeat correctly repesented ? {:("comination","Monosomic ","Haploid ","Nullisomic ","Trisomic"),((a),21,28,42,43),((b) ,7,28,40,42),((c ),21,7,42,43),((d),41,21,40,43):}
Answer» ANSWER :D

Discussion

15.	Question :In which one of the following, complementary gene interaction ratio of 9:7 is observed?
Answer» FRUIT shape in Shepherd's purse Coat COLOUR in mouse Feather colour in fowl FLOWER colour in pea Answer :D

Discussion

16.	Question : In which one of the following all four animals of a set give birth to young ones ?
Answer» Kangaroo, Hedgehog, Dolphin, Scorpion Lion, Whale, OSTRICH, BAT Penguin, Bat, HIPPOPOTAMUS, Platypus Shrew, Bat, CAT, Nereis Answer :A

Discussion

17.	Question : In which one of following preparations are likely to come across .cell junctions most frequently ?
Answer» Thrombocytes Tendon Hyaline cartilage Ciliated epithelium Answer :D

Discussion

18.	Question : In whichof these , the cranial capaity was smallest ?
Answer» Pekingman Neanderthal man JAVA APE man Cro- MAGNON man ANSWER :B

Discussion

19.	Question : In which of these options, the plants are correctly matched with the modification seen in them ?
Answer» (i) (II) (III) (IV) ANSWER :A

Discussion

20.	Question : In which of the foloing forms animal energy is availablegt
Answer» HMP andDAP ANIMAL WASTED Fossil FUELS BIOFUELS SOLUTION :N//A

Discussion

21.	Question :In which of the following yeast is not used ?(A) beer(B) whisky(C) rum(D) none
Answer» beer whisky rum NONE SOLUTION :none

Discussion

22.	Question : In which of the following would you place the plants having vascular tissue, lacking seeds?
Answer» ALGAE BRYOPHYTES PTERIDOPHYTES Gymnosperms Solution :(C) Pteridophytes and gymnosperms do have vascular tissues.However, gymnosperms bear seeds while pteridophytes not bear seeds. Algae and bryophytes do not possess vascular tissues.

Discussion

23.	Question : In which of the following , widespread nematode infection is observed(A) Leaves(B) Stem(C) Roots(D) Flowers
Answer» LEAVES STEM ROOTS FLOWERS SOLUTION :Roots

Discussion

24.	Question :In which of the following wavelength , photo system-I is inactive ?
Answer» 780 NM 680 nm 690 nm 550 nm Answer :D

Discussion

25.	Question : In which of the following type is the fruit multiocular and split upon longitudinally along dorsal sutures ?
Answer» Capsular Locolicidal Septicidal Septifragal Answer :B

Discussion

26.	Question : In which of the following kinds of ovules, the embryo sec is horse-shoe shaped
Answer» CAMPYLOTROPOUS ovule Amphitropous ovule Circinotropous ovule Hemi-anatropous ovule Answer :B

Discussion

27.	Question : In which of the following, trichocyst is present?
Answer» Hydra Amoeba Plasmodium Paramecium Answer :D

Discussion

28.	Question : In which of the following tissue, the matrix is not a product of synthesis of its cells ?
Answer» VASCULAR tissue Skeletal tissue Loose CONNECTIVE tissue Adipose tissue Answer :A

Discussion

29.	Question : In which of the following tissue is the matrix not product of synthesis of its cells ?
Answer» VASCULAR tissue Osseus tissue Loose CONNECTIVE tissue Adipose tissue Answer :A

Discussion

30.	Question :In which of the following time periods , menstrual cycle is not seen?
Answer» DUE to pregnancy During breast feeding after PARTURITION Before pregnancy During A and B ANSWER :D

Discussion

31.	Question : In which of the following, the cuticle layer covering the outer surface of the epidermal cells of leaf is again covered by a thick layer of grains constituting a glaucous bloom?
Answer» FICUS benghalensis Cucurbita maxima HELIANTHUS annuus SALIX glaucophylla ANSWER :D

Discussion

32.	Question : In which of the following the cranial capacity is minimum?
Answer» Australopithecus Cro-Magnon man Peking man Gibbon Answer :D

Discussion

33.	Question : In which of the following the birth rate is high and death rate is normal ?
Answer» Sweden Indonesia India and Morocco America and Spain Answer :C

Discussion

34.	Question : in which of the following, the growing point ends in a flower
Answer» RACEME VERTICILLASTER catkin spike Answer :B

Discussion

35.	Question : In which of the following the animal name , its two characters and its phylum / class are correctly matched ?
Answer» ANSWER :C

Discussion

36.	Question : In which of the following syngamy does not occur in external medium ? (A) Fishes(B) Amphibians(C) Reptiles(D) Both (A) and (B)
Answer» FISHES AMPHIBIANS Reptiles Both (A) and (B) Answer :C

Discussion

37.	Question : In which of the following structures, Ca2^+ issequesterad when muscles are relaxed?
Answer» Sarcoplasmic reticulum Mitochondia Golgi body Answer :B

Discussion

38.	Question : In which of the following steps of aerobic respiration of glucose, carbon dioxide is evolved ? I. Glycolysis II. Link reaction III. Krebs cycle IV. Election transport system
Answer» I and II I , II and III II, III and IV II and III Answer :D

Discussion

39.	Question : In which of the following steps NADHcan be produced?
Answer» GLUCOSE `to`FRUCTOSE CITRIC acid `to` isocitric acid Pyruvic acid `to` ACETYL `CO~A` OAA `to` citric acid Answer :C

Discussion

40.	Question : In which of the following stems is modified into phylloclade ?
Answer» Mint Opuntia Pistia Potato Answer :B

Discussion

41.	Question : In which of the following sets of animals do all the four give birth to youngones ?
Answer» Lion, BAT , whale, ostrich Platypus, penguin, bat, hippopotamus Shrew, bat, cat, kiwi Kangaroo, HEDGEHOG, dolphin, loris Answer :D

Discussion

42.	Question : In which of the following , R.Q will always be less than one ?
Answer» POTATO RICE Groundnut More than ONE option is correct Answer :C

Discussion

43.	Question : In which of the following root systems is poorly developed ?
Answer» Hyphaene Hydrilla Halophyte Hygrophyte Answer :B

Discussion

44.	Question : In which of the following protection is provided both to flora and fauna ?
Answer» NATIONAL Parks Sanctuaries BIOSPHERE reserve More than ONE OPTION is correct Answer :D

Discussion

45.	Question : In which of the following preparation collagen fibres are present in the form of parallel bundles of fibres ?
Answer» Tendon Ligament Both 1 and 2 None of these Answer :C

Discussion

46.	Question : In which of the following preformed antibodies are directly injected into the body
Answer» Colostrum ATS DPT vaccine All of these Answer :B

Discussion

47.	Question : In which of the following Pollinia are formed ?
Answer» Zostera Mirabilis Vallisneria Calotropis Answer :D

Discussion

48.	Question : Which one of the following pollination autogamous ?
Answer» Geitonogamy Xenogamy Chasmogamy Cleistogamy Answer :D

Discussion

49.	Question : inwhich of the following plants, triple fusion and double fertillization was discovered?
Answer» PORTULACA & Cucurbit Lillium & Fritillaria Triticum & Lily Fritillaria & Colocasia Answer :B

Discussion

50.	Question : In which of the following plant sunken stromata are found:-
Answer» Nerium Hydrilla Mango Guava. Answer :A

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : In which organ the growth of pollen tube is observed, till it reaches the ovary?

Question : In which one of these the elaters are present along with mature spores in the capsule (to help in spore dispersal)?

Question : In which one of the following would you expect to find glyoxysomes

Question : In which pair both the plants can be vegetatively propagated by leaf pieces ?

Question : In which one of the following the genus name,its two characters and its class/phylum are correctly matched?

Question : In which one of the following the BOD (Bio-chemical Oxygen Demand) of Sewage (S), distillery effluent (DE(, paper milleffluent (PE) and sugar mill effluent (SE) have been arranged in ascending order:

Question : In which one of the following the BOD (Biochemical Oxygen Demand ) of sewage (S), distillery effluent (DE), paper mill effluent(PE) and sugar mill effluent (SE) have been arranged in ascending order ?

Question : In which one of the following processes CO_(2) is not released?

Question : In which one of the following pollination is autogamous?(A) Xenogamy(B) Chasmogamy(C) cleistogamy(D) Geitonogamy

Question : In which one of the following options the two examples are correctly matched with their particular type of immunity ?

Question : In which one of the following, male and female gametophytes don't have free living independent existence?

Question : In which one of the following habitat, does the diurnal temperature of soil surface vary most?

Question : In which one of the following combinaations (a-d) of the number of chrmosomer is thepresent day hexaploid wheat correctly represented ?

Question : in which one of the following combinations (1-4) o fthe number of chromoses is the present day hexaploid wheeat correctly repesented ? {:("comination","Monosomic ","Haploid ","Nullisomic ","Trisomic"),((a),21,28,42,43),((b) ,7,28,40,42),((c ),21,7,42,43),((d),41,21,40,43):}

Question :In which one of the following, complementary gene interaction ratio of 9:7 is observed?

Question : In which one of the following all four animals of a set give birth to young ones ?

Question : In which one of following preparations are likely to come across .cell junctions most frequently ?

Question : In whichof these , the cranial capaity was smallest ?

Question : In which of these options, the plants are correctly matched with the modification seen in them ?

Question : In which of the foloing forms animal energy is availablegt

Question :In which of the following yeast is not used ?(A) beer(B) whisky(C) rum(D) none

Question : In which of the following would you place the plants having vascular tissue, lacking seeds?

Question : In which of the following , widespread nematode infection is observed(A) Leaves(B) Stem(C) Roots(D) Flowers

Question :In which of the following wavelength , photo system-I is inactive ?

Question : In which of the following type is the fruit multiocular and split upon longitudinally along dorsal sutures ?

Question : In which of the following kinds of ovules, the embryo sec is horse-shoe shaped

Question : In which of the following, trichocyst is present?

Question : In which of the following tissue, the matrix is not a product of synthesis of its cells ?

Question : In which of the following tissue is the matrix not product of synthesis of its cells ?

Question :In which of the following time periods , menstrual cycle is not seen?

Question : In which of the following, the cuticle layer covering the outer surface of the epidermal cells of leaf is again covered by a thick layer of grains constituting a glaucous bloom?

Question : In which of the following the cranial capacity is minimum?

Question : In which of the following the birth rate is high and death rate is normal ?

Question : in which of the following, the growing point ends in a flower

Question : In which of the following the animal name , its two characters and its phylum / class are correctly matched ?

Question : In which of the following syngamy does not occur in external medium ? (A) Fishes(B) Amphibians(C) Reptiles(D) Both (A) and (B)

Question : In which of the following structures, Ca2^+ issequesterad when muscles are relaxed?

Question : In which of the following steps of aerobic respiration of glucose, carbon dioxide is evolved ? I. Glycolysis II. Link reaction III. Krebs cycle IV. Election transport system

Question : In which of the following steps NADHcan be produced?

Question : In which of the following stems is modified into phylloclade ?

Question : In which of the following sets of animals do all the four give birth to youngones ?

Question : In which of the following , R.Q will always be less than one ?

Question : In which of the following root systems is poorly developed ?

Question : In which of the following protection is provided both to flora and fauna ?

Question : In which of the following preparation collagen fibres are present in the form of parallel bundles of fibres ?

Question : In which of the following preformed antibodies are directly injected into the body

Question : In which of the following Pollinia are formed ?

Question : Which one of the following pollination autogamous ?

Question : inwhich of the following plants, triple fusion and double fertillization was discovered?

Question : In which of the following plant sunken stromata are found:-