24277 + Interview Questions in Biology in Class 12

1.	Question : Division of cytoplasm.
Answer» ANSWER :CYTOKINESIS

Discussion

2.	Question : __________ dividesmitoticallytoformtwomalegametesis apollengrains .
Answer» SOLUTION :generativecell

Discussion

3.	Question : ____ discovered that crossing over is completely absent in some species of male drosophila.
Answer» Morgan BRIDGES Bateson REGINALD ANSWER :B

Discussion

4.	Question : _____ discovered the first hormone.
Answer» ANSWER :Baylis and STARLING

Discussion

5.	Question : _____ disease is characterised by bloody stool with tetranucleate cyst.
Answer» ANSWER :AMOEBIASIS

Discussion

6.	Question : Disc-like structure formed on centromere for attachment of spindle fibres
Answer» ANSWER :KINETOCHORE

Discussion

7.	Question : _____ day is observed as World Diabetes Day.
Answer» ANSWER :14TH NOVEMBER

Discussion

8.	Question :Cytokinesis in plant cells is by
Answer» ANSWER :CELL PLATE INFORMATION

Discussion

9.	Question : _____ day is observed as malarial day.
Answer» ANSWER :44044

Discussion

10.	Question :Crossing over occurs between:
Answer» SISTER CHROMATIDS of a bivalent Non-sister chromatids-ofa bivalent Two DIFFERENT bivalents Two non-homologous chromosomes Answer :B

Discussion

11.	Question : ……………….. Contribute about 60% of the total volume of the semen.
Answer» PROSTATE gland Cowper's glands Seminal vesicles Bartholin's glands Answer :C

Discussion

12.	Question : $ Colchicine is a chemical which can arrest cell division at metaphase ! Colchicine is also called mitotic tympanic cavity of the ear.
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

13.	Question : _____ chromosomes are J-shaped or L-shaped chromsomes.
Answer» SOLUTION :submetacentric

Discussion

14.	Question :Chemically, spindle fibre is.
Answer» ANSWER :TUBULIN PROTEIN

Discussion

15.	Question : _____ cells inhabit immune responses by other lymphocytes.
Answer» ANSWER :SUPPRESSOR T-cells

Discussion

16.	Question : Cell plate is formed of smaller units called_____
Answer» ANSWER :PHRAGMOPLAST

Discussion

17.	Question :................... carry good varities of cattle.
Answer» BUSINESSMEN Workers CATTLE KEEPERS Farmers SOLUTION :Cattle keepers

Discussion

18.	Question : $ Carragenin can coagulate blood. ! Carrangenin is a type of phycocolloid.
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

19.	Question : ........... breaks the liver cells and comes out.
Answer» TROPHOZOITE Sporozoites METACRYPTOSCHIZONT MEROZOITES SOLUTION :Metacryptoschizont

Discussion

20.	Question : . Bacterium Lactobucillus is used in the preparation of edible product:
Answer» DESA Idli CURD TODDY SOLUTION :BIOHERBICIDES

Discussion

21.	Question : ............ associated with filament of molds present in the water and form flocks.(A) Aerobic bacteria(B) Anaerobic bacteria(C) Both (A) and (B)(D) Algae
Answer» AEROBIC BACTERIA Anaerobic bacteria Both (A) and (B) ALGAE SOLUTION :Aerobic bacteria

Discussion

22.	Question : _______ are undifferentiated mass of cells with variable potency.
Answer» SOLUTION :STEM CELLS

Discussion

23.	Question : _____ are the enzymes used for cutting the DNA molecules into fragments. An example for the type of enzyme is EcoRI. What does Eco, R and I stand for:
Answer» Solution :Restriction ENZYMES / Restriction endonucleases / Restriction exonucleases / the name of any restrictionenzymes. ECO - Escherichia coli / E.coli R- Name of the strain / Type /ROUGH - RY 13 I - Roman number the order in which the enzymes were isolated from the strain of BACTERIA.

Discussion

24.	Question : _____ are the young of fish which come out of eggs.
Answer» ANSWER :HATCHLINGS

Discussion

25.	Question : Give the common name of synthetic stimulant.
Answer» ANSWER :AMPHETAMINE

Discussion

26.	Question : ........... are the result of lactic acid fermentation of fruits.(A) Curd(B) Pickle(C) Cheese(D) Ensilage
Answer» CURD PICKLE CHEESE ENSILAGE SOLUTION :Pickle

Discussion

27.	Question : ............. are the major causes of CO polution in large cities and towns.
Answer» FOSSIL FUELS OCEAN DEFORESTATION AUTOMOBILE Solution : Automobile

Discussion

28.	Question : _____ are the enzymes which unwind DNA.
Answer» ANSWER :HELICASE

Discussion

29.	Question : _____ are the bird growing for providing meat.
Answer» ANSWER :BROILER

Discussion

30.	Question : …………. Are present in the wall of carotid arteries.
Answer» Proprioceptors Enteroceptors Baroreceptors Photoreceptors Answer :C

Discussion

31.	Question : ________ are most widely used cloning vectors in genetic engineering.
Answer» ANSWER :A::D

Discussion

32.	Question : _________ are located in each annulus of each segment in leech.
Answer» SOLUTION :ANNULAR RECEPTORS

Discussion

33.	Question : .............. are group of chemicals, which get connected internally to cannabinoid receptors present in brain.
Answer» Opioids CANNABINOIDS Coca None of these Solution :Cannabinoids

Discussion

34.	Question : _____ are causative agent of ring worm.
Answer» Corynebacterium Microsporum Clostridium Salmonella Answer :FUNGI

Discussion

35.	Question : ..................... are enzymes that unwind DNA helices while .................. break and reseal the strands.
Answer» SOLUTION :HELICASES, TOPOISOMERASE

Discussion

36.	Question : _____ are also known as antibody generators.
Answer» ANSWER :ANTIGENS

Discussion

37.	Question : ……….. Are a pair of lobulated glands which are present at the base of urinary bladder in males.
Answer» PROSTATE glands Seminal vesicles Cowper's glands Bulbourethral glands Answer :B

Discussion

38.	Question : _____ are a set of offsprings of B aand T-cells that provide future immunity against 2nd invasion.
Answer» ANSWER :MEMORY CELLS

Discussion

39.	Question : _____ are a set of molecules that can trigger the immune response.
Answer» ANSWER :ANTIGENS

Discussion

40.	Question : ____ and ____ show antagonistic effect in case of apical dominance but synergistic effect in case of differentiation :
Answer» CYTOKININ and Ethylene Auxin and Cytokinin Gibberellin and Cytokinin ABA and Ethylene Answer :B

Discussion

41.	Question : _____ and_____ are two rawmaterials of photosynthesis.
Answer» ANSWER :`CO_2`,`H_2O`

Discussion

42.	Question : What is acid rain?
Answer» SULPHUR di oxide and HYDROGEN peroxide Hydrogen peroxide and SULPHURIC acid Hydrochloride and sulphur DIOXIDE Sulphur dioxide and Nitrogen oxide Solution :Sulphur dioxide and Nitrogen oxide

Discussion

43.	Question : Anaphase separation during mitosis is:
Answer» Qualitative Quantitative Both(a) and (B) NONE of these Answer :C

Discussion

44.	Question : …...... add organic matter to the soil and increase fertility
Answer» Anabaena Nostoc Ocillatoria BLUE GREEN ALGAE Solution :Blue green algae

Discussion

45.	Question : …………. Acts as the centre of many reflexes of the body.
Answer» Diencephalon Cerebellum Cerebrum Spinal Cord Answer :D

Discussion

46.	Question :A short resting stage between meiosis I and meiosis II.
Answer» ANSWER :INTERKINESIS

Discussion

47.	Question : ( a) Explain giving reasons why the tourists visiting Rohtang Pass or Mansarovar are advised to resume normal ‘active life’ only after a few days of reaching there. (b) It is impossible to find small animals in the polar regions. Give reasons.
Answer» SOLUTION : (a) Initially the person suffers from ALTITUDE sickness/nausea, fatigue and heart PALPITATION because of low oxygen availability and low atmospheric PRESSURE. Gradually the body increases RBC production, decreasing binding capacity of HB and increases the breathing rate to get acclimatised. (b) Small birds have larger surface area relative to their volume, 30 they lose heat much faster and have to spend more energy to generate body heat through matabolism.

Discussion

48.	Question :A cytoplasmic factor responsible for crossing major transition in cell cycle is____
Answer» ANSWER :MPF

Discussion

49.	Question :A common structural feature of vessel elements and sieve tube elements is'
Answer» ENUCLEATE condition Thick secondry walls Pores on LATERAL walls Presence of p-protein Answer :A

Discussion

50.	Question :
Answer» Only A is correct Only A & B are correct Only A & D are correct Only A & C are correct Answer :D

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : Division of cytoplasm.

Question : __________ dividesmitoticallytoformtwomalegametesis apollengrains .

Question : ____ discovered that crossing over is completely absent in some species of male drosophila.

Question : _____ discovered the first hormone.

Question : _____ disease is characterised by bloody stool with tetranucleate cyst.

Question : Disc-like structure formed on centromere for attachment of spindle fibres

Question : _____ day is observed as World Diabetes Day.

Question :Cytokinesis in plant cells is by

Question : _____ day is observed as malarial day.

Question :Crossing over occurs between:

Question : ……………….. Contribute about 60% of the total volume of the semen.

Question : $ Colchicine is a chemical which can arrest cell division at metaphase ! Colchicine is also called mitotic tympanic cavity of the ear.

Question : _____ chromosomes are J-shaped or L-shaped chromsomes.

Question :Chemically, spindle fibre is.

Question : _____ cells inhabit immune responses by other lymphocytes.

Question : Cell plate is formed of smaller units called_____

Question :................... carry good varities of cattle.

Question : $ Carragenin can coagulate blood. ! Carrangenin is a type of phycocolloid.

Question : ........... breaks the liver cells and comes out.

Question : . Bacterium Lactobucillus is used in the preparation of edible product:

Question : ............ associated with filament of molds present in the water and form flocks.(A) Aerobic bacteria(B) Anaerobic bacteria(C) Both (A) and (B)(D) Algae

Question : _______ are undifferentiated mass of cells with variable potency.

Question : _____ are the enzymes used for cutting the DNA molecules into fragments. An example for the type of enzyme is EcoRI. What does Eco, R and I stand for:

Question : _____ are the young of fish which come out of eggs.

Question : Give the common name of synthetic stimulant.

Question : ........... are the result of lactic acid fermentation of fruits.(A) Curd(B) Pickle(C) Cheese(D) Ensilage

Question : ............. are the major causes of CO polution in large cities and towns.

Question : _____ are the enzymes which unwind DNA.

Question : _____ are the bird growing for providing meat.

Question : …………. Are present in the wall of carotid arteries.

Question : ________ are most widely used cloning vectors in genetic engineering.

Question : _________ are located in each annulus of each segment in leech.

Question : .............. are group of chemicals, which get connected internally to cannabinoid receptors present in brain.

Question : _____ are causative agent of ring worm.

Question : ..................... are enzymes that unwind DNA helices while .................. break and reseal the strands.

Question : _____ are also known as antibody generators.

Question : ……….. Are a pair of lobulated glands which are present at the base of urinary bladder in males.

Question : _____ are a set of offsprings of B aand T-cells that provide future immunity against 2nd invasion.

Question : _____ are a set of molecules that can trigger the immune response.

Question : ____ and ____ show antagonistic effect in case of apical dominance but synergistic effect in case of differentiation :

Question : _____ and_____ are two rawmaterials of photosynthesis.

Question : What is acid rain?

Question : Anaphase separation during mitosis is:

Question : …...... add organic matter to the soil and increase fertility

Question : …………. Acts as the centre of many reflexes of the body.

Question :A short resting stage between meiosis I and meiosis II.

Question : ( a) Explain giving reasons why the tourists visiting Rohtang Pass or Mansarovar are advised to resume normal ‘active life’ only after a few days of reaching there. (b) It is impossible to find small animals in the polar regions. Give reasons.

Question :A cytoplasmic factor responsible for crossing major transition in cell cycle is____

Question :A common structural feature of vessel elements and sieve tube elements is'

Question :

Question : and show antagonistic effect in case of apical dominance but synergistic effect in case of differentiation :

Question : _ and_ are two rawmaterials of photosynthesis.