24277 + Interview Questions in Biology in Class 12

1.	Question : $ Process of separation of photosynthetic pigments is called chromatography ! Chromatophore have accessory photosynthetic pigments such as phycocyanin.
Answer» If both As and R are CORRECT and R is correct EXPLANATION of As If both As and R are correct but R is not correct explanation of As If As is correct, R is wrong If both As and R are wrong. Answer :A

Discussion

2.	Question : How does the entry of food particle into trachea is prevented when swallowing ?
Answer» SOLUTION :EPIGLOTTIS

Discussion

3.	Question :Point of crossing over.
Answer» ANSWER :CHIASMA

Discussion

4.	Question : __________ play structural and catalytic role during translation.
Answer» tRNAs rRNAs mRNAs DNA Polymerase Answer :B

Discussion

5.	Question : _____ plants are advantageous as they often result in increased fruit and flower size.
Answer» SOLUTION :TETRAPLOID

Discussion

6.	Question :Photorespirationis seen in:
Answer» CHLOROPLAST, PEROXISOME,and ribosome Photosynthetic cell Non-photosytnthetic cell Both(a) and(B) ANSWER :A

Discussion

7.	Question : _____ part of kidney has 85% of glomeruli.
Answer» ANSWER :CORTEX

Discussion

8.	Question : ………… particulate size particles are responsible for causing the greatest harm to human health.(A) PM 2.5(B) PM 5(C) PM 10(D) PM 7
Answer» PM 2.5 PM 5 PM 10 PM 7 Answer :A

Discussion

9.	Question : Which part of uriniferous tubule is directly influencedby ADH?
Answer» ANSWER :DISTAL CONVOLUTED TUBULE

Discussion

10.	Question : Which structure of man is similar to spiracle of cockroach ?
Answer» ANSWER :NOSTRIL

Discussion

11.	Question : ………. Of wheat is a fungal disease.
Answer» TOBACCO mosaic Brown rust Red rot Black rot Answer :B

Discussion

12.	Question : In rabbit, oesophagus opens into the stomach followed by large intestine.
Answer» SOLUTION :OESOPHAGUS

Discussion

13.	Question :_______ occur afterimplantationin formationof embryo.
Answer» SOLUTION : GASTRULATION

Discussion

14.	Question : A molecule of haemoglobin carries oxygen molecules
Answer» 2 4 6 8 Answer :B

Discussion

15.	Question : . No significant role of working of Na–K–ATPase pump can be noticed during :-
Answer» POLARISATION DEPOLARISATION REPOLARISATION Hyperpolarisation ANSWER :B

Discussion

16.	Question : ++ = Mutualism- - = _____
Answer» SOLUTION :COMPETITION

Discussion

17.	Question : _________movement of a leech is brought about by contraction and relaxation of muscles.
Answer» SOLUTION :LOOPING (or) CRAWLING

Discussion

18.	Question : _____ movement is called directional movement.
Answer» ANSWER :TACTIC

Discussion

19.	Question : $ Minerals from 25 to 30% of the cell contents. ! Lipids form 40 to 50% of the cell contents.
Answer» If both As and R are CORRECT and R is correct EXPLANATION of As If both As and R are correct but R is not correct explanation of As If As is correct, R is wrong If both As and R are wrong. Answer :D

Discussion

20.	Question : . Messolson and Stahl explained the types of DNA molecule formed in different generations as
Answer» LIGHT DNA hybrid DNA heavy DNA all the above Answer :D

Discussion

21.	Question : ....... may move across the membrane by the process of simple diffusion along the concentration gradient , from higher concentration to lower concentration.
Answer» Polar MOLECULES PROTEIN NEUTRAL SOLUTES Non polar molecules Answer :C

Discussion

22.	Question : ……….. Maintains basic metabolic rate.
Answer» Thyroxine ADH GH Oxytocin Answer :A

Discussion

23.	Question : _____ limb of loop of Henle is impermeable to water.
Answer» ANSWER :ASCENDING

Discussion

24.	Question : _____ leads to leaf and fruit fall.
Answer» ANSWER :ABSCISSION

Discussion

25.	Question : ............. is useful for obtaining higher production of food.
Answer» Hunting Agriculture Animal HUSBANDRY Both (B) and (C) SOLUTION :Agriculture

Discussion

26.	Question : _____ is the vital link that ensures continuity of species between organisms of one generation and the next. gametes zygote zoospores endosperm
Answer» gametes zygote zoospores endosperm Answer :B

Discussion

27.	Question : ……….. is the vital link that ensures continuity of species between organism of one generation and next generation. (A) Pollen grains (B) Zygote (C) Egg cell (D) Male gamete
Answer» Pollen grains ZYGOTE Egg cell MALE gamete ANSWER :B

Discussion

28.	Question :................ is the unit of measurement of total ozone.
Answer» SOLUTION :DOBSON UNIT

Discussion

29.	Question : _____ is the transitional zone where plants and animals of both the ecosystems are available.
Answer» ANSWER :ECOTONE

Discussion

30.	Question : ..................... is the technique by which the three-dimensional structures of macromolecules can be studied.
Answer» SOLUTION :X-Ray ANALYSIS

Discussion

31.	Question : Give term for cutting of fallopian tube of female.
Answer» ANSWER :TUBECTOMY

Discussion

32.	Question : Sudden heritable change in the nucleotide sequence of DNA.
Answer» SOLUTION :MUTATION

Discussion

33.	Question : ___________ is the study of changes in density and growth of population in relation to various parameters of population.
Answer» SOLUTION :POPULATION DYNAMICS

Discussion

34.	Question : I am the state tree of Tamilnadu.Who am I____?
Answer» ANSWER :PALMYRA

Discussion

35.	Question : _____ is the second largest part of human brain.
Answer» Cerebrum Hypothalamus Pons Cerebellum Answer :D

Discussion

36.	Question : …………………… is the rearing of honey bee colonies, commonly in hives.
Answer» APICULTURE Pisciculture Poultry Sericulture SOLUTION :Apiculture

Discussion

37.	Question : _____ is the progeny of a single individual obtained by self breeding.
Answer» SOLUTION :PURELINE

Discussion

38.	Question : _____ is the ratio of real humidity and humidity which the air can hold at saturation at that temperature.
Answer» ANSWER :Ralative HUMIDITY

Discussion

39.	Question : …………… is the process of bringing a plant species under human control.
Answer» (a) EMASCULATION (B) HYBRIDIZATION (C) DOMESTICATION (d) Acclimatization Answer :C

Discussion

40.	Question : The process by which DNA of nucleus passes information to RNA is called :
Answer» ANSWER :TRANSCRIPTION

Discussion

41.	Question : ..................... is the phenomenon by which the synthesis of a set of enzymes leading to a product is shut down, when the product is provided from outside.
Answer» SOLUTION :REPRESSION

Discussion

42.	Question : .......... is the part of alimentary canal of cockroach which secretes peritrophic membrane
Answer» Gizzard Midgut Oespophagus Crop Answer :B

Discussion

43.	Question : _____ is the odlest palnt breeding method practised for crop improvement.
Answer» ANSWER :SELECTION

Discussion

44.	Question : ……….. Is the only pigment that can absorb and convert light energy into chemical energy.
Answer» Chlorophyll-a Chlorophyll-b Chlorophyll-c Chlorophyll-d Answer :A

Discussion

45.	Question : ____________ is the most abundant hydrocarbon in atmosphere.
Answer» ANSWER :A

Discussion

46.	Question : ………………… is the monomer of DNA.
Answer» SOLUTION :NUCLEOTIDE

Discussion

47.	Question : _______is the middle man for the exchange of materials between blood and tissue cells.
Answer» TISSUE fluids Serum Plasma None of these Answer :A

Discussion

48.	Question : ……….. Is the microbial source for the enzyme lipase.
Answer» Sclerotinia Saccharomyces cerevisiae Rhizopus spp Trichoderma ANSWER :C

Discussion

49.	Question : ____ is the mating of closely related animals within the same breed.
Answer» out-crossing cross-breeding interspecific hybridization in-breeding Solution :In-breeding

Discussion

50.	Question : ___________ is the kingdom that includes prokaryotic unicellular organisms.
Answer» ANSWER :MONERA

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : $ Process of separation of photosynthetic pigments is called chromatography ! Chromatophore have accessory photosynthetic pigments such as phycocyanin.

Question : How does the entry of food particle into trachea is prevented when swallowing ?

Question :Point of crossing over.

Question : __________ play structural and catalytic role during translation.

Question : _____ plants are advantageous as they often result in increased fruit and flower size.

Question :Photorespirationis seen in:

Question : _____ part of kidney has 85% of glomeruli.

Question : ………… particulate size particles are responsible for causing the greatest harm to human health.(A) PM 2.5(B) PM 5(C) PM 10(D) PM 7

Question : Which part of uriniferous tubule is directly influencedby ADH?

Question : Which structure of man is similar to spiracle of cockroach ?

Question : ………. Of wheat is a fungal disease.

Question : In rabbit, oesophagus opens into the stomach followed by large intestine.

Question :_______ occur afterimplantationin formationof embryo.

Question : A molecule of haemoglobin carries oxygen molecules

Question : . No significant role of working of Na–K–ATPase pump can be noticed during :-

Question : ++ = Mutualism- - = _____

Question : _________movement of a leech is brought about by contraction and relaxation of muscles.

Question : _____ movement is called directional movement.

Question : $ Minerals from 25 to 30% of the cell contents. ! Lipids form 40 to 50% of the cell contents.

Question : . Messolson and Stahl explained the types of DNA molecule formed in different generations as

Question : ....... may move across the membrane by the process of simple diffusion along the concentration gradient , from higher concentration to lower concentration.

Question : ……….. Maintains basic metabolic rate.

Question : _____ limb of loop of Henle is impermeable to water.

Question : _____ leads to leaf and fruit fall.

Question : ............. is useful for obtaining higher production of food.

Question : _____ is the vital link that ensures continuity of species between organisms of one generation and the next. gametes zygote zoospores endosperm

Question : ……….. is the vital link that ensures continuity of species between organism of one generation and next generation. (A) Pollen grains (B) Zygote (C) Egg cell (D) Male gamete

Question :................ is the unit of measurement of total ozone.

Question : _____ is the transitional zone where plants and animals of both the ecosystems are available.

Question : ..................... is the technique by which the three-dimensional structures of macromolecules can be studied.

Question : Give term for cutting of fallopian tube of female.

Question : Sudden heritable change in the nucleotide sequence of DNA.

Question : ___________ is the study of changes in density and growth of population in relation to various parameters of population.

Question : I am the state tree of Tamilnadu.Who am I____?

Question : _____ is the second largest part of human brain.

Question : …………………… is the rearing of honey bee colonies, commonly in hives.

Question : _____ is the progeny of a single individual obtained by self breeding.

Question : _____ is the ratio of real humidity and humidity which the air can hold at saturation at that temperature.

Question : …………… is the process of bringing a plant species under human control.

Question : The process by which DNA of nucleus passes information to RNA is called :

Question : ..................... is the phenomenon by which the synthesis of a set of enzymes leading to a product is shut down, when the product is provided from outside.

Question : .......... is the part of alimentary canal of cockroach which secretes peritrophic membrane

Question : _____ is the odlest palnt breeding method practised for crop improvement.

Question : ……….. Is the only pigment that can absorb and convert light energy into chemical energy.

Question : ____________ is the most abundant hydrocarbon in atmosphere.

Question : ………………… is the monomer of DNA.

Question : _______is the middle man for the exchange of materials between blood and tissue cells.

Question : ……….. Is the microbial source for the enzyme lipase.

Question : ____ is the mating of closely related animals within the same breed.

Question : ___________ is the kingdom that includes prokaryotic unicellular organisms.