24277 + Interview Questions in Biology in Class 12 Page 114 InterviewSolution

5651.	Question : The junction between dendrite of one cell and axon of another cell is
Answer» Impulse Joint Synapse Axon hillock Answer :C

Discussion

5652.	Question : The joints between atlas and axis of mammals is an example of
Answer» PIVOT JOINT hinge joint saddle joint GLIDING joint Answer :a

Discussion

5653.	Question : The joint of our neck which allows us to rotate our head left to right is :-
Answer» PIVOT joint Condyloid joint Hinge joint Gliding joint Answer :A

Discussion

5654.	Question : The major event that occurs during the anaphase of mitosis which brings about the equal distribution of chromosomes is:
Answer» REPLICATION of GENETIC material Alignment of CHROMOSOMES at the equator Splitting of centromeres Condensation of chromatin Answer :C

Discussion

5655.	Question : The joint not associated with the upper limb bones of humans is
Answer» CONDYLOID JOINT Synarthrosis Saddle joint Hinge joint ANSWER :B

Discussion

5656.	Question :The Jim Corbett National Park is located in :
Answer» UTTARAKHAND ( NAINITAL ) UTTAR Pradesh Haryana Madhya Pradesh Answer :A

Discussion

5657.	Question : The "lock and key" model of enzyme action illustrates a particular enzyme molecule
Answer» May be destroyed and resynthesised several times Interacts with a SPECIFIC TYPE of substrate molecule Reacts at IDENTICAL rates under all conditions Forms a PERMANENT enzyme-substrate complex Answer :B

Discussion

5658.	Question : The jhoney bee queen areises form a fertilized egg and of its larva especially fed on
Answer» honey dollen royal jelly mocro ORGANISMS ANSWER :C

Discussion

5659.	Question : The isotopes that have proved useful in reseaches on photosynthesis are
Answer» `O_15 and O^14` `C^11 and P^32` `P^32 and O^18` `C^14 and O^18` ANSWER :D

Discussion

5660.	Question :The IUCN . Red list ( 2004 ) documents the extinction of ( A ) species in the last 500 years . It includes ( B ) vertebrates , ( C ) invertebrates and ( D ) plants .
Answer» A = 784 , B = 338 , C = 359 , D = 87 A = 784 , B = 330 , C = 359 , D = 95 A = 784 , B = 320 , C = 377 , D = 87 A = 784 , B = 300 , C = 359 , D = 125 Answer :A

Discussion

5661.	Question : The major control point in animal cell cycle is.
Answer» ANSWER :RESTRICTION POINT

Discussion

5662.	Question : The ion which shows passive influx into guard cells during day time in a photoactive stomata
Answer» Chlorine Potassium Malate Calcium Answer :A

Discussion

5663.	Question : The ion which shows active influx into guard cells during day time in a photoactive stomata
Answer» Chlorine Potassium Malate Calcium Answer :B

Discussion

5664.	Question : The major components of an ecosystem are
Answer» FOOD CHAIN and decomposers Mineral CYCLING and ENERGY Food chain and energy FLOW Energy flow and decomposers Answer :D

Discussion

5665.	Question : The major cause of reduction in biodiversity is due to
Answer» HABITAT fragmentation over exploitation overproduction both a and b Answer :D

Discussion

5666.	Question : The maintenance of proper balance by a gymnast during performance is possible due to
Answer» VESTIBULAR apparatus Cochlea AUDITORY canal Ear OSSICLES ANSWER :A

Discussion

5667.	Question : The ion which shows active efflux from guard cells during day time in a photoactive stomata
Answer» CHLORINE Potassium Malate `H^(+)` ions Answer :D

Discussion

5668.	Question : The invasion of a community in succession involves
Answer» ECESIS ,AGGREGATION and COMPETITION Migration ,aggregation and competition Aggregation ,competition and coaction Migration ,ecesis and aggregation Answer :D

Discussion

5669.	Question : The iodine derivative of amino acid tyrosine brings about effects on target cells by
Answer» Altering gene expression ACTIVATING SECONDARY messengers Activating membrane - BOUND RECEPTORS More than one OPTION is correct Answer :A

Discussion

5670.	Question : The major application of embryo culture is in :
Answer» PRODUCTION of alkaloids Clonal propagation Overcoming HYBRIDIZATION barriers Induction of somaclonal variation Answer :C

Discussion

5671.	Question : The main steps in breeding a new gwnwtic variert of a crop are
Answer» Evalutions and slections of PARENTS cross hybridisation AMONG the slected parents COLLECTION of variety selection and testing of superior RECOMBINANTS OPTIONS are - 1,2,3,4,5 1,4,5,2,32 3,1,2,5,4 3,2,5,1,4 Answer :3,1,2,5,4

Discussion

5672.	Question : The invasive species introduced in India from Philippines
Answer» LANTANA Prosopis Parthenium Kappaphycus Solution : Lantana

Discussion

5673.	Question : The main technique involved in agricultural biotechnology is called:
Answer» TISSUE culture Transformation Plant breeding DNA replication Answer :A

Discussion

5674.	Question : The introduction to t-DNA into plant involves(A) Allowing plant tool to stand in water(B) Infection of plant by Agrobacterium tumefaciens(C) Altering the pH of the soil, then heat shocking the plants(D) Exposing the plants to cold for a brief period
Answer» Allowing PLANT tool to STAND in water Infection of the plant by Agrobacterium tumefaciens Altering the PH of the soil, then heat SHOCKING the plants Exposing the plants to COLD for a brief period Solution :Infection of the plant by Agrobacterium tumefaciens

Discussion

5675.	Question : The main source of energy during muscle contraction is:
Answer» ATP GTP CTP UTP Answer :A

Discussion

5676.	Question : The introduction of fish that is more serious threat to the indigenous catfishes in river, they are
Answer» hilsa Clarias carp catla Answer :B

Discussion

5677.	Question : The main reason for the success of Mendel was that
Answer» he made STATISTICAL ANALYSIS of the offspring he first took only one character at a TIME in his CROSSES. he kept pedigree RECORDS he selected pea plant Solution : he first took only one character at a time in his crosses.

Discussion

5678.	Question : The main purpose of embryo culture is for
Answer» Production of haploid plants Production of VIRUS free plants Protoplast FUSION Embryo rescue Answer :A

Discussion

5679.	Question : The introduction of tDNA into plants involves
Answer» INFECTION of the plant by AGROBACTERIUM TUMEFACIENS altering the pH of soil, heat-shocking the PLANTS exposing the plants to cold for a brief period allowing the plant ROOTS to stand in water Solution :infection of the plant by Agrobacterium tumefaciens

Discussion

5680.	Question : The main objective of zoological park is
Answer» captive breeding PROGRAMME of ANIMALS providing NATURAL HABITATS to animals in genetic engineering programme all the statements are correct Answer :D

Discussion

5681.	Question : The main plant of Funaria is
Answer» SPOROPHYTIC gametophytic vegetative carposporophytic Answer :D

Discussion

5682.	Question : Persons who take drugs intravenously are much more likely to acquire serious infections like
Answer» cancer AIDS and cancer malaria typhoid. Solution :DRUG absuers who take drugs intravenously are more likely to develop infections like AIDS and hepatitis B as these diseases can SPREAD through infected NEEDLES.

Discussion

5683.	Question : The main plant body of Bryophyta is__________.
Answer» ANSWER :GAMETOPHYTE

Discussion

5684.	Question : The introduction of new life forms in bare areas is initiated by act of migration.
Answer» ANSWER :1

Discussion

5685.	Question : The main muscles controlling functioning oftracheae of insects are
Answer» Alary Tergosternal Both above None above Answer :B

Discussion

5686.	Question : The interval between infection and appearance of disease symptoms is called:
Answer» INOCULATION Penetration Infection period Incubation period Answer :D

Discussion

5687.	Question : The main mineralocorticoid hormone is ………..
Answer» cortisol cortisone aldosterone androgen Answer :C

Discussion

5688.	Question : The international union for conservation of water and natural resource (IUCN) head quarter is located in _____.
Answer» ANSWER :SWITZERLAND

Discussion

5689.	Question : The main functions of the root systems are (a) Absorption of water & minerals (b) Providing a proper anchorage to the plant (c) Maintaining the temperature & pressure of the plant (d) Gaseous exchange
Answer» a & b c & d a & c b & d Answer :A

Discussion

5690.	Question : The international size of herbarium sheet is
Answer» `41×29` cm^2 `16(1/2)×11(1/2)` inches^2 `29×41` cm^2 both (1) & (2) ANSWER :D

Discussion

5691.	Question : The main mechanical tissue of plant is :
Answer» Parenchyma Collenchyma Sclerenchyma Both 2 and 3 Answer :C

Discussion

5692.	Question : The main mechanism of determining the direction of short distance transport within a potato tuber is
Answer» determined by the structure and function of the tonoplast of TUBER cells diffusion due to concentration differences and BULD flow due to pressure differences not affected by temperature and pressure pressure flow THROUGHT the phloem Answer :B

Discussion

5693.	Question : The internal environment of an organism is called
Answer» EQUILIBRIUM Organostasis Homeostasis APOPTOSIS ANSWER :C

Discussion

5694.	Question : The main functions of the root system are all of the following, except
Answer» absorption of WATER and minerals from the soil providing a PROPER ANCHORAGE to the plant parts prevent soil erosion synthesis of 2,4-D (2,4-dichlorophenoxyacetic ACID) Answer :4

Discussion

5695.	Question : The internal buds of fresh water sponges are otherwise called (A) Choanocyte (B) Gemmule (C) Osculum (D) Blastula
Answer» choanocyte GEMMULE OSCULUM BLASTULA ANSWER :B

Discussion

5696.	Question : The main function of the innerbark of a woody plant is to
Answer» transport minerals WATER from the rootsto the leaves act as a membraneimpermeable to waterand gas transport food from the leaves to the otherparts of the plant protect theplant from HERBIVOROUS animals Solution :Inner bark of awoody plant is phloemn & function of PHLOEM is to transport food fromthe leaves to the otherparts of plant. XYLEM isanothertansporting ductof plantthat transport minerals& waterfrom theroots to the leaves.

Discussion

5697.	Question : The intermediate host of Schistosoma is
Answer» SNAIL Mosquito HOUSEFLY SHEEP SOLUTION :Snail

Discussion

5698.	Question : The main function of trophectoderm in mammalian embryo is
Answer» PROTECTION of the DEVELOPING cells drawing FOOD for the developing cells formation of FUTURE ectoderm formation of placenta Answer :D

Discussion

5699.	Question : The interaction where only one species is benefitted and detrimental to the other species is
Answer» PARASITISM PREDATION MUTUALISM 1 and 2 Answer :D

Discussion

5700.	Question : The main function of mammalian corpus luteum is to produce
Answer» oestrogen only PROGESTERONE human CHORIONIC GONADOTROPIN relaxin only Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The junction between dendrite of one cell and axon of another cell is

Question : The joints between atlas and axis of mammals is an example of

Question : The joint of our neck which allows us to rotate our head left to right is :-

Question : The major event that occurs during the anaphase of mitosis which brings about the equal distribution of chromosomes is:

Question : The joint not associated with the upper limb bones of humans is

Question :The Jim Corbett National Park is located in :

Question : The "lock and key" model of enzyme action illustrates a particular enzyme molecule

Question : The jhoney bee queen areises form a fertilized egg and of its larva especially fed on

Question : The isotopes that have proved useful in reseaches on photosynthesis are

Question :The IUCN . Red list ( 2004 ) documents the extinction of ( A ) species in the last 500 years . It includes ( B ) vertebrates , ( C ) invertebrates and ( D ) plants .

Question : The major control point in animal cell cycle is.

Question : The ion which shows passive influx into guard cells during day time in a photoactive stomata

Question : The ion which shows active influx into guard cells during day time in a photoactive stomata

Question : The major components of an ecosystem are

Question : The major cause of reduction in biodiversity is due to

Question : The maintenance of proper balance by a gymnast during performance is possible due to

Question : The ion which shows active efflux from guard cells during day time in a photoactive stomata

Question : The invasion of a community in succession involves

Question : The iodine derivative of amino acid tyrosine brings about effects on target cells by

Question : The major application of embryo culture is in :

Question : The main steps in breeding a new gwnwtic variert of a crop are

Question : The invasive species introduced in India from Philippines

Question : The main technique involved in agricultural biotechnology is called:

Question : The introduction to t-DNA into plant involves(A) Allowing plant tool to stand in water(B) Infection of plant by Agrobacterium tumefaciens(C) Altering the pH of the soil, then heat shocking the plants(D) Exposing the plants to cold for a brief period

Question : The main source of energy during muscle contraction is:

Question : The introduction of fish that is more serious threat to the indigenous catfishes in river, they are

Question : The main reason for the success of Mendel was that

Question : The main purpose of embryo culture is for

Question : The introduction of tDNA into plants involves

Question : The main objective of zoological park is

Question : The main plant of Funaria is

Question : Persons who take drugs intravenously are much more likely to acquire serious infections like

Question : The main plant body of Bryophyta is__________.

Question : The introduction of new life forms in bare areas is initiated by act of migration.

Question : The main muscles controlling functioning oftracheae of insects are

Question : The interval between infection and appearance of disease symptoms is called:

Question : The main mineralocorticoid hormone is ………..

Question : The international union for conservation of water and natural resource (IUCN) head quarter is located in _____.

Question : The main functions of the root systems are (a) Absorption of water & minerals (b) Providing a proper anchorage to the plant (c) Maintaining the temperature & pressure of the plant (d) Gaseous exchange

Question : The international size of herbarium sheet is

Question : The main mechanical tissue of plant is :

Question : The main mechanism of determining the direction of short distance transport within a potato tuber is

Question : The internal environment of an organism is called

Question : The main functions of the root system are all of the following, except

Question : The internal buds of fresh water sponges are otherwise called (A) Choanocyte (B) Gemmule (C) Osculum (D) Blastula

Question : The main function of the innerbark of a woody plant is to

Question : The intermediate host of Schistosoma is

Question : The main function of trophectoderm in mammalian embryo is

Question : The interaction where only one species is benefitted and detrimental to the other species is

Question : The main function of mammalian corpus luteum is to produce