24277 + Interview Questions in Biology in Class 12 Page 212 InterviewSolution

10551.	Question : PH of human blood is
Answer» 8.4 7.4 6.4 5.4 Answer :B

Discussion

10552.	Question : pH of guard cells increases during day time due to
Answer» EFFLUX of `H^(+)` ions Influx of `K^(+)` ions Influx of `CL^(-)` ions Influx of `H^(+)` ions Answer :A

Discussion

10553.	Question : PGA as the first carbon dioxide fixation product was discovered in Photosynthesis of
Answer» BRYOPHYTE GYMNOSPERMS ANGIOSPERM Alga Answer :D

Discussion

10554.	Question : P.falciparum causes _____ malaria.
Answer» ANSWER :CEREBRAL MALARIA

Discussion

10555.	Question : Peyers patches produce:
Answer» Enterokinase Lymphocytes Mucous Ptyalin Answer :B

Discussion

10556.	Question : Peyer's patches are found in
Answer» LAMINA PROPRIA of ileum submucosa of duodenum Serosa of jejunum Muscularis of stomach Answer :A

Discussion

10557.	Question : Petromyzon is/shows
Answer» A gnathostome A MARINE ANIMAL Anadromous migration Both (2) & (3) Answer :D

Discussion

10558.	Question : Petiolar tendril is found in :
Answer» LATHYRUS aphaca Lathyrus odoratus Gardun nasturtium Passiflora Answer :C

Discussion

10559.	Question : Petals of a flowerare arranged in such a way that each overlaps a petal on one side and is overlapped by other petal on the other side. The eastivation is
Answer» Valvate QUINCUNCIAL IMBRICATE TWISTED ANSWER :D

Discussion

10560.	Question : Petiole modified into green leafy structure is called
Answer» Cladode Phyllode Phylloclade Cladophyll Answer :B

Discussion

10561.	Question : Petiolar leaf tendril is found in :
Answer» Passiflora Clematis Cissus Feronia Answer :B

Discussion

10562.	Question : pests which only feed and oviposit on crop are
Answer» MAJOR PESTS MINOR pests Accidental pests OCCASIONAL pests. Answer :A

Discussion

10563.	Question : PesticideDDTwas usedto controlinsect such asmosquitoesand agriculturalpests .But DDTpersistedin the environmentand transportedfromone trophiclevel to highertrophiclevels.a) Name thephenomenon and explain it .b)what happens to the concentrationof DDTin eachtrophiclevel?
Answer» SOLUTION :a)BIOMAGNIFICATION .Biomagnification REFERSTO increasein concentrationofthe toxicantat successivetrophic levels. b) Non biodegradabletoxic substanceaccumulated by anorganismcannot bemetabolishedorexcreted and it is passed to thenext higher TROPHIC level.

Discussion

10564.	Question : Persons having genotype I^(@)I^(B) would show the blood group as AB.This is because of
Answer» Pleiotropy Co-dominance Segregatin Incomplete dominance Answer :B

Discussion

10565.	Question : Persons that receive transplant of an organ are given immunosuppressant. Why?
Answer» Solution :These suppress the IMMUNE system of the body and thus PREVENT the rejection of TRANSPLANT organ as a foreign organ.

Discussion

10566.	Question : Person with blood group AB is considered as universal recipient because he has
Answer» Both A and B ANTIGENS on RBC but no ANTIBODIES in the plasma Both A and B antibodies in the plasma No ANTIGEN on RBC and no antibody in the plasma Both A and B antigens in the plasma but no antibodies Answer :A

Discussion

10567.	Question : Person who are colour blind cannot distinguish
Answer» RED and GEEN YELLOW and WHITE BLACK and red yellow and blue Solution : red and geen

Discussion

10568.	Question : Person having geotype I^(A)I^(B) would show the blood group as AB. This is because of
Answer» Pleiotropy Co-dominance Segregation of UNIT factors Incomplete dominance Answer :B

Discussion

10569.	Question : Person having genotype I^A I^B would show the blood group as AB. This is because of
Answer» Pleiotropy Codominance Segregation Incomplete DOMINANCE SOLUTION :

Discussion

10570.	Question : Peroxisomes occur in
Answer» BUNDLE sheath Vascular bundles mesophyll cells Endosperm Answer :C

Discussion

10571.	Question : In some seeds such as black pepper and beet nucellus may be persistent. Such nucellus is known as :
Answer» CHALAZA Perisperm hilum Tegmen Answer :B

Discussion

10572.	Question : Persistent nucellus in the seed is known as :
Answer» (A) PERISPERM (B) HILUM (C) TEGMEN (D) Chalaza Answer :A

Discussion

10573.	Question : Persistent calyx produces a dry bladder around an edible berry in
Answer» CAPSICUM SOLANUM NICOTIANA PHYSALIS ANSWER :D

Discussion

10574.	Question : Permian
Answer» KT Boundary Pleistocene All the above. Answer :D

Discussion

10575.	Question : Permeability of protoplasm is accelerated by :
Answer» K Na Ca P Answer :A

Discussion

10576.	Question : Permanent wilting percentage (PWP) is the highest in
Answer» SILT SANDY soil Loam Clay soil Answer :B

Discussion

10577.	Question : Peritoneum and thyroid gland originate respectively from which germ layers?
Answer» MESODERM and endoderm Endoderm and mesoderm Ectoderm and endoderm Mesoderm and ectoderm Answer :A

Discussion

10578.	Question : Periyar senctuary is famous for _____.
Answer» ANSWER :ELEPHANT

Discussion

10579.	Question : Perisperm present in seeds of few angiospermic plant is
Answer» Presistent endosperm Remnant of integuments Persistent nucellus Remnant of chalaza Solution :Chromosome compliment of INDIVIDUAL inflicted with Turner's syndrome is 44 + XO. A person inflicted with Turner's syndrome is / has * STERILE female * Development of rudimentary ovaries * 45 chromosomes in each cell * Shorter STATURE than normal

Discussion

10580.	Question : Perisperm is:
Answer» REMAINS of nucellus Outer part of embryo sac• Degenerated synergid Degenerated SECONDARY nucleus ANSWER :A

Discussion

10581.	Question : Perisperm in angiospermic seeds is derived from :
Answer» Nucellus Endosperm Integument Antipodals Answer :A

Discussion

10582.	Question : Perisperm differs from endosperm in
Answer» Its FORMATION by fusion of secondary nucleus with SEVERAL sperms Being a HAPLOID tissue Having no reserve food Being a DIPLOID tissue Answer :D

Discussion

10583.	Question : Peripatus is a connecting link between
Answer» Ctenophora and Platyhelminthes Mollusca and ECHINODERMATA Annelida and Arthropoda Coelenterata and PORIFERA ANSWER :C

Discussion

10584.	Question : Period of pregnancy is called:
Answer» GESTATION PERIOD Incubation period Pre-patent period BLASTULA ion Answer :A

Discussion

10585.	Question :Perinuclear space is about -
Answer» 10 - 50 NM 1 - 5 nm 100- 500 nm 10 - 50M ANSWER :C

Discussion

10586.	Question : Porifera reproduce by special internal buds are called________
Answer» ANSWER :GEMMULE

Discussion

10587.	Question : Pericarp, Testa, tegmen, Cotyledons
Answer» SOLUTION :Pericarp is a FRUIT wall. OTHERS are the PARTS of SEED.

Discussion

10588.	Question : Pericarp develops from
Answer» Septum Ovary wall Funiculus Integument Answer :B

Discussion

10589.	Question : Pericarp is dry in
Answer» GUAVA mango mustard mango GROUNDNUT orange groundnut mustard orange guava mango ANSWER :C

Discussion

10590.	Question : Pericardium
Answer» Solution :(1)Paricardium is the double layered peritoneum that ENCLOSES the HEART.It consists of two LAYERS,viz,fibrous pericardium and serous pericardium.(2)Fibrous pericardium is the LAYER having tough,inelastic fibrous connective tissue whereas serous pericardium is the inner double layered membrane.It has in turn an outer partietal layer and inner visceral layer.(3)Parietal layer of serous paricardium lies on the inner side of fibrous paricardium.(4)Visceral layer also known as epicardium to heart and thus forms outer covering over the heart.(5)There is a paricardial fluid in the pericardial space which is present in between the pariental and visceral alyers of serous paricardium.

Discussion

10591.	Question : Performance of a crop or an animal depends mainly on its genotype and the . . . . . . . . . In which it is grown.
Answer» ANSWER :ENVIRONMENT

Discussion

10592.	Question : Perforin is released by :-
Answer» NK–cell T–memory `T_(H)`–cell Macrophage Answer :A

Discussion

10593.	Question : Pre-fertilizations events of sexual reproduction in all organisms are gametogenesis and gamete transfer. What are the post fertilization events?
Answer» SOLUTION : ZYGOTE FORMATION ,Embrogensis

Discussion

10594.	Question : Prefertilisationevents of sexual reproduction in all organisms are gametogenesis and gamete transfer. Name the part of plants such as ovary, ovule and ovary wall develop in post fertilzation process.
Answer» SOLUTION :OVARY-fruit,Ovule-seed, Ovary wall-pericap

Discussion

10595.	Question : Perception of ringling sounds in the ears when there is no real sound is
Answer» Vestigo Tinnitus Otolgia OTITIS ANSWER :B

Discussion

10596.	Question : Percentage ratio of natality over mortality is :
Answer» POPULATION dynamics Vital index Population density Total count Answer :B

Discussion

10597.	Question : Percentage of precipitation that can be stored in dams of India:
Answer» 10 18 43 55 Answer :A

Discussion

10598.	Question : Percentage of worldpopulation suffering from diabetes is
Answer» `48%` `24%` `4%` `1%` ANSWER :C

Discussion

10599.	Question : Percentage of pure individuals in F_(2) of a monohybrid cross
Answer» 100 75 50 25 Answer :C

Discussion

10600.	Question : Percentage of SCID cases having adenosine deaminase deficiency
Answer» 0.15 0.25 0.45 0.62 Solution :0.15

Discussion

Explore topic-wise InterviewSolutions in .

Question : PH of human blood is

Question : pH of guard cells increases during day time due to

Question : PGA as the first carbon dioxide fixation product was discovered in Photosynthesis of

Question : P.falciparum causes _____ malaria.

Question : Peyers patches produce:

Question : Peyer's patches are found in

Question : Petromyzon is/shows

Question : Petiolar tendril is found in :

Question : Petals of a flowerare arranged in such a way that each overlaps a petal on one side and is overlapped by other petal on the other side. The eastivation is

Question : Petiole modified into green leafy structure is called

Question : Petiolar leaf tendril is found in :

Question : pests which only feed and oviposit on crop are

Question : PesticideDDTwas usedto controlinsect such asmosquitoesand agriculturalpests .But DDTpersistedin the environmentand transportedfromone trophiclevel to highertrophiclevels.a) Name thephenomenon and explain it .b)what happens to the concentrationof DDTin eachtrophiclevel?

Question : Persons having genotype I^(@)I^(B) would show the blood group as AB.This is because of

Question : Persons that receive transplant of an organ are given immunosuppressant. Why?

Question : Person with blood group AB is considered as universal recipient because he has

Question : Person who are colour blind cannot distinguish

Question : Person having geotype I^(A)I^(B) would show the blood group as AB. This is because of

Question : Person having genotype I^A I^B would show the blood group as AB. This is because of

Question : Peroxisomes occur in

Question : In some seeds such as black pepper and beet nucellus may be persistent. Such nucellus is known as :

Question : Persistent nucellus in the seed is known as :

Question : Persistent calyx produces a dry bladder around an edible berry in

Question : Permian

Question : Permeability of protoplasm is accelerated by :

Question : Permanent wilting percentage (PWP) is the highest in

Question : Peritoneum and thyroid gland originate respectively from which germ layers?

Question : Periyar senctuary is famous for _____.

Question : Perisperm present in seeds of few angiospermic plant is

Question : Perisperm is:

Question : Perisperm in angiospermic seeds is derived from :

Question : Perisperm differs from endosperm in

Question : Peripatus is a connecting link between

Question : Period of pregnancy is called:

Question :Perinuclear space is about -

Question : Porifera reproduce by special internal buds are called________

Question : Pericarp, Testa, tegmen, Cotyledons

Question : Pericarp develops from

Question : Pericarp is dry in

Question : Pericardium

Question : Performance of a crop or an animal depends mainly on its genotype and the . . . . . . . . . In which it is grown.

Question : Perforin is released by :-

Question : Pre-fertilizations events of sexual reproduction in all organisms are gametogenesis and gamete transfer. What are the post fertilization events?

Question : Prefertilisationevents of sexual reproduction in all organisms are gametogenesis and gamete transfer. Name the part of plants such as ovary, ovule and ovary wall develop in post fertilzation process.

Question : Perception of ringling sounds in the ears when there is no real sound is

Question : Percentage ratio of natality over mortality is :

Question : Percentage of precipitation that can be stored in dams of India:

Question : Percentage of worldpopulation suffering from diabetes is

Question : Percentage of pure individuals in F_(2) of a monohybrid cross

Question : Percentage of SCID cases having adenosine deaminase deficiency