24277 + Interview Questions in Biology in Class 12 Page 249 InterviewSolution

12401.	Question : Movement of chiasma at the end of chromosomes in prophase-1
Answer» is CALLED terminalisation OCCUR in diakinesis both (a) and (B) occur in zygotene Answer :C

Discussion

12402.	Question : Movement of blastomers usually seen in which embryonic stage :-
Answer» MORULA BLASTULA GASTRULA In all EMBRYONIC stages Answer :C

Discussion

12403.	Question : Movement in pollen tubes in angiosperms is:
Answer» Chemotropic Chemonastic Chemotactic Hydrotropic Answer :A

Discussion

12404.	Question : Movement of a molecule across a membrane independent of other molecules is known as –
Answer» Apoplast Uniport Antiport Symport Answer :B

Discussion

12405.	Question : Movement due to internal stimulus is called _____ movement.
Answer» ANSWER :autonemic

Discussion

12406.	Question : Movemant of materials against concentratin gradient is due to
Answer» ACTIVE TRANSPORT Passive transport Diffuion Osmosis Answer :A

Discussion

12407.	Question : Movement caused by more growthon upper surface.
Answer» ANSWER :EPINASTY

Discussion

12408.	Question : Mouth parts of different insects are the example of :
Answer» HOMOLOGOUS STRUCTURE ANALOGOUS structure Atavism Vestigeal organs Answer :A

Discussion

12409.	Question : Mouth in male and female Ascaris is
Answer» TERMINAL VENTRAL Triradiate Both (1) & (3) Answer :D

Discussion

12410.	Question : Mountain sikcness is due to
Answer» COLDER atmosphere Higherhumidity Winds Rarefactin of air. Answer :D

Discussion

12411.	Question : Identify the incorrect statements.i)Mound layering is applied for the plants having flexible branches. ii)Part of the stem is buried in the soil. iii)Two different plants are joined. iv) IT is the method of producing a new plant by cutting the plant.
Answer» I and III only II and IV only III and IV only I and II only Answer :C

Discussion

12412.	Question : Mottling of teeth is due to presence of an element in drinking water. This elements :
Answer» Mercury Flurine Boron Chlorine Answer :B

Discussion

12413.	Question : Motor nerve is:
Answer» Olfactory Optic Oculomotor Vagus Answer :C

Discussion

12414.	Question : Moulting hormone is secreted in insects by which gland ?
Answer» CORPORA allata PINEAL gland Hypothalamus Prothoracic gland Answer :D

Discussion

12415.	Question : Motor vehicles equippedwith catalyticconverter should use onlyunleaded petrol. Justify .
Answer» SOLUTION :LEAD in the PETROL INACTIVATES the CATALYST.

Discussion

12416.	Question : Mother's colostrum contains lg G.What type of immunity it confers to the infants?
Answer» PASSIVE immunity Active immunity Cell MEDIATE immunity Innate immunity Answer :A

Discussion

12417.	Question : Mother homozygous B,and father is A. What will be the possible blood group in their progeny ?
Answer» AB & B POSSIBLE AB & A possible A and B possible O possible Answer :A

Discussion

12418.	Question : Mother and father of a person with .O. blood group have .A. and .B. blood group respectively. What would be the genotype of both mother and father?
Answer» MOTHER is HOMOZYGOUS for .A. blood group and father is HETEROZYGOUS for .B.. Mother is heterozygous for .A. blood group and father is homozygous for .B. Both mother and father are heterozygous for A. and .B. blood group, RESPECTIVELY. Both mother and father are homozygous for .A. and .B. blood group, respectively. Solution :

Discussion

12419.	Question : Mother and father of a person with O blood group have A and B blood group respectively., What would be the genotype of both mother and father?
Answer» MOTHER is homozygou for A blood group and FATHER is heterozygous of B Mother is heterozygous for A blood group and father is HOMOZYGOUS for B. Both mother and fatehr are heterozygous for A and Blood group, respectively Both mother and father are homozygous for A and B blood group, respectively. Answer :C

Discussion

12420.	Question : Motor neurons carry impulses from receptors to the central nervous system
Answer» Answer :SENSORY NEURONS CARRY impulses from receptors to the centrel nervous SYSTEM

Discussion

12421.	Question : Most widely used bioweapon is(A) Bacillus subtilis(B) Pseudomonas putida(C) Bacillus anthracis(D) None of these
Answer» BACILLUS subtilis Pseudomonas putida Bacillus ANTHRACIS NONE of these SOLUTION :Bacillus anthracis

Discussion

12422.	Question :Most widely used bioweapon is
Answer» BACILLUS subtilis Pseudomonas putida Bacillus ANTHRACIS NONE of the above Answer :C

Discussion

12423.	Question : Most useful step of decomposition for plants is
Answer» mineralization catabolism humification fragmentation of detritus Answer :A

Discussion

12424.	Question : Most vital process for existence of life on Earth is
Answer» REPRODUCTION of PLANTS and animals Respiration of animals Photosynthesis by plants Communication in animals Answer :C

Discussion

12425.	Question : Most toxic nitrogenous waste product among following is
Answer» Ammonia Urea Uric acid Amino acids Answer :C

Discussion

12426.	Question : Most resistant stage in the life cycle of angiosperms is its:
Answer» SEEDING stage Seed stage Flowering stage Fruiting stage Solution :N//A

Discussion

12427.	Question : Most reduced sized gametophyte is of
Answer» BRYOPHYTE PTERIDOPHYTE Gymnosperm Angiosperm Answer :4

Discussion

12428.	Question : Most resistant organic material on exine of pollen grains:SporopolleninCelluloseChitinPectin
Answer» Sporopollenin Cellulose Chitin Pectin Answer :A

Discussion

12429.	Question : Most probably now, no origin of life is taking place in the way as occurred on primordial earth because
Answer» Free OXYGEN MAY react with most intremediate Free HYDROGEN is absent Water vapour is absent Man is not INTERESTED Answer :A

Discussion

12430.	Question : Mostrecent fossil of man
Answer» Cro-Magnonmam JAVA MAM AFRICAN MAN PEKING mam Answer :A

Discussion

12431.	Question : Most primitive living mammals, welch provide an evidence of organic evolution from geographical distribution are found in
Answer» China India Australia Africa Answer :D

Discussion

12432.	Question : Most parasitic fungi derive their nutrition from the host by means of a structure called
Answer» enzymes SEPTUM SCLEROTIUM INFECTIVE hair ANSWER :A

Discussion

12433.	Question : Most populus country of the world is
Answer» BANGLADESH INDONESIA India China ANSWER :D

Discussion

12434.	Question : Most primary hominoid appeared was:
Answer» Pleistocene EARLY MIOCENE Late miocene and early Pliocene Late plicone Answer :C

Discussion

12435.	Question : Most people living in hilly regions suffer from goitre. Give reason.
Answer» SOLUTION :IODINE DEFICIENCY is HILL WATER.

Discussion

12436.	Question : Most often HIV infection occurs due to conscious behaviour patterns. Do you agree with the statement? Substantiate your answer.
Answer» Solution :Yes, INFECTION spreads through the INFECTED NEEDLES and syringes used by drug addicts, or during blood transfusion. Transmission of HIV OCCURS to PERSONS having multiple sex partners.

Discussion

12437.	Question : Mostorganismusuallymaintaintheirinternalevironmentsin a constantconditionirrespective of external factors. But if the externalconditionare the alternatives for the organismto cope up with suchcondition
Answer» Solution :Organismshave manyalternatives. a. The organsimscan migrate i.e.,they can moveawaytemporarily fromthe stressfullhabitate to a morehospitable are an RETURN whenstressful period isovere.g.Birds Theorganismcan suspendorgansimlikebacteriaand fungiproduceprodcueseedsand someothervegetative REPRODUCTIVE STRUCTURES .Theprotective structres oforganismgerminateon availabilityofsuitable enevironment.

Discussion

12438.	Question : Most of the tree dwellers are found in which type of forest
Answer» DECIDUOUS forest Tropical RAIN forest Tundra Grassland ANSWER :B

Discussion

12439.	Question : Most of the water flow in the root takes place via apoplast because:
Answer» Cortical CELLS are loosely arranged Cortical cells are LIVING cells Cortical cells are thin WALLED cells All of the above Answer :A

Discussion

12440.	Question : Most of the mutations are lethal ad may lead to death of organism.
Answer» ANSWER :1

Discussion

12441.	Question : Most of the mutations seen in sex determination of maize are due to defects in _____ synthesis.
Answer» GIBBERELLINS PROTEIN ANTHOCYANIN POLYPEPTIDE ANSWER :A

Discussion

12442.	Question :''Most of the existing communities are evolved through a series of intermediate stages.''a. Substantiate the above statement with the process involved in the above phenomenon.b.Name the type of community development in bare rock and flooded area where the communities were destoryed.c.Elucidate the dynamic changes that happen in a water body.
Answer» SOLUTION :a.Succession b.Primary succession in BARE rock and secondary succession in flooded area. c.Phytoplankton STAGE `to`Submerged stage `to`FLOATING stage `to`Sedge MEADOW stage`to`Scrub stage `to`forest stage.

Discussion

12443.	Question : Most of the energy in the cells is liberated by oxidation of carbohydrates when
Answer» GLUCOSE is CONVERTED to ALCOHOL and `CO_2` Sugar is converted to PYRUVIC acid Pyruvic acid is converted to `CO_2` and `H_2 O` Pyruvic acid is converted to CoA Answer :C

Discussion

12444.	Question : Most of the biologiacal energy is supplied by mitochondria through
Answer» BREAKING of proteins Reduction of `NADP^(+)` Breaking of sugars Oxidising TCA substrates Solution :NA

Discussion

12445.	Question : Most of the biological activities of proteins are due to :
Answer» Primary CONFIGURATION SECONDARY configuration TERTIARY configuration More than one OPTION is correct Answer :C

Discussion

12446.	Question : Most of the cell membranes are principally composed of :
Answer» Protein Lipid protein and lipid Cellulose Answer :C

Discussion

12447.	Question : Most of the annelids are
Answer» Terrestrial Free living Ectoparasites Endoparasites Answer :B

Discussion

12448.	Question : Most of hydrolytic reactions are
Answer» EXOTHERMIC Endothermic Irreversible Reversible . SOLUTION :N//A

Discussion

12449.	Question : Most of female bufflaoes show sign of heat in the
Answer» MORNING aftrenoon evening NIGHT ANSWER :D

Discussion

12450.	Question : Most living organisms cannot survive at tempreture above 45^@. How are some microbes able to live in habitats with temperatures exceeding 100^@?
Answer» Solution :Microbes are ABLE to survinve at high temperature through (i) Occurrence of BRANCHED chain of lipids in the cell MEMBRANE that REDUCE FLUIDITY of cell membrane. (ii) Development of heat tolerant enzyme which deals with the high temperature.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Movement of chiasma at the end of chromosomes in prophase-1

Question : Movement of blastomers usually seen in which embryonic stage :-

Question : Movement in pollen tubes in angiosperms is:

Question : Movement of a molecule across a membrane independent of other molecules is known as –

Question : Movement due to internal stimulus is called _____ movement.

Question : Movemant of materials against concentratin gradient is due to

Question : Movement caused by more growthon upper surface.

Question : Mouth parts of different insects are the example of :

Question : Mouth in male and female Ascaris is

Question : Mountain sikcness is due to

Question : Identify the incorrect statements.i)Mound layering is applied for the plants having flexible branches. ii)Part of the stem is buried in the soil. iii)Two different plants are joined. iv) IT is the method of producing a new plant by cutting the plant.

Question : Mottling of teeth is due to presence of an element in drinking water. This elements :

Question : Motor nerve is:

Question : Moulting hormone is secreted in insects by which gland ?

Question : Motor vehicles equippedwith catalyticconverter should use onlyunleaded petrol. Justify .

Question : Mother's colostrum contains lg G.What type of immunity it confers to the infants?

Question : Mother homozygous B,and father is A. What will be the possible blood group in their progeny ?

Question : Mother and father of a person with .O. blood group have .A. and .B. blood group respectively. What would be the genotype of both mother and father?

Question : Mother and father of a person with O blood group have A and B blood group respectively., What would be the genotype of both mother and father?

Question : Motor neurons carry impulses from receptors to the central nervous system

Question : Most widely used bioweapon is(A) Bacillus subtilis(B) Pseudomonas putida(C) Bacillus anthracis(D) None of these

Question :Most widely used bioweapon is

Question : Most useful step of decomposition for plants is

Question : Most vital process for existence of life on Earth is

Question : Most toxic nitrogenous waste product among following is

Question : Most resistant stage in the life cycle of angiosperms is its:

Question : Most reduced sized gametophyte is of

Question : Most resistant organic material on exine of pollen grains:SporopolleninCelluloseChitinPectin

Question : Most probably now, no origin of life is taking place in the way as occurred on primordial earth because

Question : Mostrecent fossil of man

Question : Most primitive living mammals, welch provide an evidence of organic evolution from geographical distribution are found in

Question : Most parasitic fungi derive their nutrition from the host by means of a structure called

Question : Most populus country of the world is

Question : Most primary hominoid appeared was:

Question : Most people living in hilly regions suffer from goitre. Give reason.

Question : Most often HIV infection occurs due to conscious behaviour patterns. Do you agree with the statement? Substantiate your answer.

Question : Mostorganismusuallymaintaintheirinternalevironmentsin a constantconditionirrespective of external factors. But if the externalconditionare the alternatives for the organismto cope up with suchcondition

Question : Most of the tree dwellers are found in which type of forest

Question : Most of the water flow in the root takes place via apoplast because:

Question : Most of the mutations are lethal ad may lead to death of organism.

Question : Most of the mutations seen in sex determination of maize are due to defects in _____ synthesis.

Question : Most of the energy in the cells is liberated by oxidation of carbohydrates when

Question : Most of the biologiacal energy is supplied by mitochondria through

Question : Most of the biological activities of proteins are due to :

Question : Most of the cell membranes are principally composed of :

Question : Most of the annelids are

Question : Most of hydrolytic reactions are

Question : Most of female bufflaoes show sign of heat in the

Question : Most living organisms cannot survive at tempreture above 45^@. How are some microbes able to live in habitats with temperatures exceeding 100^@?