24277 + Interview Questions in Biology in Class 12

1.	Question : The phosphlipids are broken down to their residues by the action of enzymes called:
Answer» TRIOSE PHOSPHATE isomerase Cytochrome oxidase Peroxidase Malic dehydrogenase Answer :A

Discussion

2.	Question : The phonotypic ratio of incomplete dominance in F_(2) is
Answer» `3:1` `1:2:1` `1:3` `1:1` ANSWER :B

Discussion

3.	Question : The phenotypic ratio of monohybrid cross is
Answer» 9: 3:3:1 1:2:1 `3:1` `1:2:3` SOLUTION :`3:1`

Discussion

4.	Question : The pheomenon which helps to maintain a constant internal environment in living organisms is
Answer» ENTROPY Homeostasis Haemolysis Apoptosis Answer :B

Discussion

5.	Question : The phenotypic ratio of incomplete dominance is ………..
Answer» `2 : 1` `1 : 2 : 1` `1 : 1 : 1` `1 : 1 : 2` ANSWER :A::B

Discussion

6.	Question : The phenotypic ratio of incomplete dominance is
Answer» `1:1` `3:1` `1:2:1` `9:3:3:1` ANSWER :C

Discussion

7.	Question : The phenotypic ratio of co dominance in F_(2) is
Answer» `3:1` `1:2:1` `1:1` `1:3` ANSWER :B

Discussion

8.	Question : The phenotypic ratio obtained by Mendel in dihybrid cross is
Answer» 3:3:1:1 `1:2:1` 9:3:3:1 `3:1` ANSWER :C

Discussion

9.	Question : The phenomenon which prevents precocious reproductive development late in growing season and enables the plant to have sufficient times to reach maturity, is :-
Answer» Photoperiodism Vernalisation Senescence Abscission Answer :B

Discussion

10.	Question : The phenotypic improvement of humans after birth is known as
Answer» Euphenics Euthenics Eugenics Genetic engineering Answer :A

Discussion

11.	Question : The phenotypic ratio in the F_2generation of dihybrid cross is
Answer» `9:3:3:1` `1:2:2:4:1:2:1:2:1 ` `7:1:1:7` `12: 8:4 ` ANSWER :A

Discussion

12.	Question : The phenotypic and genotypic ratio in incomplete dominance is
Answer» `1:2:1` `9:3: 3:3:1 ` `3:1` `9: 2 ` SOLUTION :`1:2:1`

Discussion

13.	Question : The phenotypic ratio in the F_2 generation of dihybrid cross is :
Answer» `9:3:3:1` `1:2:2:4:1:2:1:2:1` `7:1:1:7` `12:8:4` ANSWER :A

Discussion

14.	Question : The phenotypic ratio in the F_2 generation of a dihybrid cross is :
Answer» `9:3:3:1` `1:2:2:4:1:2:1:2:1` `7:1:1:7` `1:2:3:4` ANSWER :A

Discussion

15.	Question : The phenotype of an individuals may be affectedif the modifiedallele produces
Answer» Only (a) is CORRECT (a) and (C ) are correct (B) and (c ) are correct Only (c ) is correct Answer :B

Discussion

16.	Question : The phenotype will only one genotype in the F_(2) of a dihybrid cross
Answer» DOUBLE DOMINANT phenotype Single dominant phenotype Double RECESSIVE phenotype Single recessive phenotype Answer :B

Discussion

17.	Question : The phenotypic ratio of incomplete dominance is ……….. .
Answer» `1 : 1` `3 : 1` `1 : 2 : 1` `9 : 3 : 3 : 1` ANSWER :C

Discussion

18.	Question : The phenomenon which defies the independent assortment is
Answer» Segeration Crossing over Dominance Linkage ANSWER :D

Discussion

19.	Question : The phenomenonwhichhelps in maintaininga cosntantinternalenviroment inlivingorganismis
Answer» entropy HEMOLYSIS APOPTOSIS homeostasis Answer :E

Discussion

20.	Question : The phenomenon wherein, the ovary develops into a fruit without fertilisation is called(A) Parthenocarpy(B) Apomixis(C) Asexual reproduction(D) Sexual reproduction
Answer» Parthenocarpy APOMIXIS Asexual reproduction SEXUAL reproduction Solution :Parthenocarpy is a PRODUCTION of seedless fruits without fertilisation. There are few species in which fruits develop without fertilisation. Such fruits are called parthenocarpic fruits. Other options are wrong. Because. (i) In a sexual reproduction only parents are capable to produce new organisms (ii) Apomixis is a method of forming seed without fertilisation in which embryo RESEMBLES mother plant genetically (iii) In sexual reproduction in different plants of a same or OPPOSITE species, gametes produced by process of producing male and female gamtes, form zygote by fertilisation through syngamy. New organism is developed from it

Discussion

21.	Question : The phenomenon of using a predator for controlling a pest is:
Answer» BIOLOGICAL control Genetic engineering Artifical control Confusion technique Answer :A

Discussion

22.	Question : The phenomenon of skin cast can be observed in ?
Answer» Frogs Fishes Snakes Snails Answer :C

Discussion

23.	Question : The phenomenon of the influence of relative duration of day night on floweringis called
Answer» VERNALISATION PHOTOBLEACHING Photoropism Photoperidism Answer :D

Discussion

24.	Question : The phenomenon of ''Industrial Melanism'' demonstrates
Answer» NATURAL SELECTION induccd MUTATION eproductive ISOLATION geographical isolation SOLUTION : Natural selection

Discussion

25.	Question : The phenomenon of incorporation of nutrient in living microbes is called
Answer» humifications NUTRIENT immobilisation MINERALISATION none of these ANSWER :B

Discussion

26.	Question : The phenomenon of crosspollination is also called as_____________________.
Answer» ANSWER :ALLOGAMY

Discussion

27.	Question : The phenomenon of a single gene regulating several phenotypes is called
Answer» MULTIPLE allelism EPISTASIS INCOMPLETE dominance PLEIOTROPISM SOLUTION :pleiotropism

Discussion

28.	Question : The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilization is called
Answer» Parthenocarpy Apomixis Vegetative propagation Sexual reproduction Answer :B

Discussion

29.	Question : The phenomenon of apical dominance is a result of
Answer» Secretion of auxin by APICAL bud Secretion of auxin by AXILLARY bud Accumulation of auxin at adventitious bud Accumulation of auxin at growing APICES of ROOT and shoot Answer :A

Discussion

30.	Question : The phenomenon discovered by griffith that proves DNA as genetic material is :
Answer» Transcription Translation TRANSFORMATION Transduction Answer :C

Discussion

31.	Question : The phase of the population growth where natality is equal to mortality is called
Answer» ASYMPTOTE LAG PHASE LOG phase none of these Answer :A

Discussion

32.	Question : The phase of tha cell cycle where cells remain metabolically active but usually do not proliferate is
Answer» G_0 PHASE M-phase Quiescent phase Both (1) and (3) ANSWER :D

Discussion

33.	Question : The phase of respiration in which free mole-cular oxygen is used is called …….. .
Answer» TCA cycle glycolysis both (a) and (B) fermentation Answer :A

Discussion

34.	Question : The phase of mitosis in which chromosomes are thickest and shortest is
Answer» Metaphase Prophase Telophase Anaphase Answer :A

Discussion

35.	Question : The phase common to aerobic and anaerobic respiration is
Answer» KREB's cycle glycolysis glycogenolysis ETS Answer :B

Discussion

36.	Question : The pesticide more persistent in the soil is
Answer» DDT BHC Dieldrin Baygon ANSWER :C

Discussion

37.	Question : The person with Turner's Syndrome has
Answer» 45 Autosomes and X SEX CHROMOSOMES 44 Autosomes and XYY Sex Chromosomes 45 AUTOSOME and XYY Sex Chromosomes 44 Automomes and X sex chromosomes Answer :D

Discussion

38.	Question : The permissible use of the technique amniocentesis is for :-
Answer» DETECTING any GENETIC abnormality Detecting SEX of the unborn foetus Artificial insemination Transfer of EMBRYO into the UTERUS of a surrogate mother Answer :A

Discussion

39.	Question : The permanent removal of forests and woodlands is called………………..
Answer» REFORESTATION afforestation DEFORESTATION agroforestry Solution :deforestation

Discussion

40.	Question : the permissible use of the amniocentesis technique is for:
Answer» artificial insemination transfer of embryo into the UTERUS of a surrogate mother DETECTING any genetic abnormality. detecting sex of the UNBORN FOETUS. Answer :A

Discussion

41.	Question : The permanentdecrease in populationoccursdue to
Answer» MIGRATION EMIGRATION MORTALITY ANSWER :E

Discussion

42.	Question : The permanent removal of forests and woodlands is called ………. .
Answer» reforestation afforestation deforestation agroforestry Answer :C

Discussion

43.	Question : The Periyar Wildlife Sanctuary is the pride of Kerala. a. Where is this sanctuary located in Kerala? b. Give the importance of this place.
Answer» SOLUTION :a. Thekkady (IDUKKI district) b. PROTECTION is given to the animals such as TIGER, ELEPHANT.

Discussion

44.	Question : The period of opening of a flower is ………. .
Answer» ANSWER :A

Discussion

45.	Question : The periods of Mesozoic era
Answer» TRIASSIC, JURASSIC and Cretaceous Cambrian, ORDOVICIAN and Silurian Devonian, Carboniferous and Permian Tertiary and QUATERNARY ANSWER :A

Discussion

46.	Question : The period of growth is generally divided into three phases manely
Answer» ANSWER :MERISTEMATIC, ELONGATION and MATURATION PHASE

Discussion

47.	Question : What is the period for which pollen grains remain functional?
Answer» SOLUTION :GEITONOGAMY

Discussion

48.	Question : The period between.......of age may be thought of as adolescence period
Answer» 18-21 yrs. 12-21 yrs. 12-18 yrs. 18-25 yrs. Answer :C

Discussion

49.	Question : Thepericardial fluidreduces ___ duringheart bestand protectsthe heart frommechanicalinjuries .
Answer» SOLUTION :FRICTION

Discussion

50.	Question : The period between the fertilization and birth is called _____.
Answer» ANSWER :GESTATION PERIOD

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question : The phosphlipids are broken down to their residues by the action of enzymes called:

Question : The phonotypic ratio of incomplete dominance in F_(2) is

Question : The phenotypic ratio of monohybrid cross is

Question : The pheomenon which helps to maintain a constant internal environment in living organisms is

Question : The phenotypic ratio of incomplete dominance is ………..

Question : The phenotypic ratio of incomplete dominance is

Question : The phenotypic ratio of co dominance in F_(2) is

Question : The phenotypic ratio obtained by Mendel in dihybrid cross is

Question : The phenomenon which prevents precocious reproductive development late in growing season and enables the plant to have sufficient times to reach maturity, is :-

Question : The phenotypic improvement of humans after birth is known as

Question : The phenotypic ratio in the F_2generation of dihybrid cross is

Question : The phenotypic and genotypic ratio in incomplete dominance is

Question : The phenotypic ratio in the F_2 generation of dihybrid cross is :

Question : The phenotypic ratio in the F_2 generation of a dihybrid cross is :

Question : The phenotype of an individuals may be affectedif the modifiedallele produces

Question : The phenotype will only one genotype in the F_(2) of a dihybrid cross

Question : The phenotypic ratio of incomplete dominance is ……….. .

Question : The phenomenon which defies the independent assortment is

Question : The phenomenonwhichhelps in maintaininga cosntantinternalenviroment inlivingorganismis

Question : The phenomenon wherein, the ovary develops into a fruit without fertilisation is called(A) Parthenocarpy(B) Apomixis(C) Asexual reproduction(D) Sexual reproduction

Question : The phenomenon of using a predator for controlling a pest is:

Question : The phenomenon of skin cast can be observed in ?

Question : The phenomenon of the influence of relative duration of day night on floweringis called

Question : The phenomenon of ''Industrial Melanism'' demonstrates

Question : The phenomenon of incorporation of nutrient in living microbes is called

Question : The phenomenon of crosspollination is also called as_____________________.

Question : The phenomenon of a single gene regulating several phenotypes is called

Question : The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilization is called

Question : The phenomenon of apical dominance is a result of

Question : The phenomenon discovered by griffith that proves DNA as genetic material is :

Question : The phase of the population growth where natality is equal to mortality is called

Question : The phase of tha cell cycle where cells remain metabolically active but usually do not proliferate is

Question : The phase of respiration in which free mole-cular oxygen is used is called …….. .

Question : The phase of mitosis in which chromosomes are thickest and shortest is

Question : The phase common to aerobic and anaerobic respiration is

Question : The pesticide more persistent in the soil is

Question : The person with Turner's Syndrome has

Question : The permissible use of the technique amniocentesis is for :-

Question : The permanent removal of forests and woodlands is called………………..

Question : the permissible use of the amniocentesis technique is for:

Question : The permanentdecrease in populationoccursdue to

Question : The permanent removal of forests and woodlands is called ………. .

Question : The Periyar Wildlife Sanctuary is the pride of Kerala. a. Where is this sanctuary located in Kerala? b. Give the importance of this place.

Question : The period of opening of a flower is ………. .

Question : The periods of Mesozoic era

Question : The period of growth is generally divided into three phases manely

Question : What is the period for which pollen grains remain functional?

Question : The period between.......of age may be thought of as adolescence period

Question : Thepericardial fluidreduces ___ duringheart bestand protectsthe heart frommechanicalinjuries .

Question : The period between the fertilization and birth is called _____.