24277 + Interview Questions in Biology in Class 12 Page 286 InterviewSolution

14251.	Question : Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an example which could lower the dissolved oxygen content of an aquatic body.
Answer» Solution :YES, the WATER become SEPTIC if the DISSOLVED oxygen drops to zero. A very good example of it is organic pollution (biodegradable).

Discussion

14252.	Question : Life span of worker bee is :
Answer» 10 days 15 days 6 weeks 10 weeks Answer :C

Discussion

14253.	Question : Is life still originating ?
Answer» ANSWER :No

Discussion

14254.	Question : Life spam of Cow is .20-25 years. What is the life spam of horse?
Answer» 140 years 20-30 years 100-150 years 60 years Answer :D

Discussion

14255.	Question : Explain about life span of organisms ?
Answer» SOLUTION :The period from birth to the NATURAL death of an organism represents its LIFE SPAN.

Discussion

14256.	Question : Life originated on earth nearly ................. years ago.
Answer» SOLUTION :4 BILLION YEARS AGO

Discussion

14257.	Question : Is it right to name the layer of simple cuboidal epithelium on the surface of ovary as germinal epithelium?
Answer» Solution :The layer of cuboidal epithelium on the SURFACE of ovary is actually not germinal epithelium. It REPRESENTS visceral peritoneum. The term STILL exists because its cuboidal epithelial cells were once thought to produce oocyte. It is now named as OVARIAN epithelium.

Discussion

14258.	Question : Is it true that carpets and curtains/drapes placed on the floor or wall surfaces can reduce noise level. Explain briefly ?
Answer» Solution :Yes, CARPETS and curtains/drapes placed on the FLOOR or wall surfaces can reduce noise LEVEL because these are sound ABSORBER substances and thus acts as muffling device.

Discussion

14259.	Question : Life originates from pre-existing living being' OR Theory of biogenesis was advocated by whom?
Answer» ANSWER :ABBE SPALLANZANI and LOUIS PASTEUR

Discussion

14260.	Question : Is it possible to achieve .zero population growth rate? If yes, what kind of age pyramid is obtained?
Answer» Solution :Yes. An inverted BELL shaped age pyramid is obtained. The young of pre-REPRODUCTIVE age GROUP individuals are less in NUMBER and both pre-reproductive and reproductive stages are in the same level.

Discussion

14261.	Question :Life originated from the earths inorganic atmosphere is the post but this no longer happens today.
Answer» Solution :Life cannot be originated in the PRESENT day ATMOSPHERE because : The temperature of present day atmosphere is much less than that of PRIMITIVE atmosphere. The present day atmosphere is oxidizing and not REDUCING due to presence of oxygen.

Discussion

14262.	Question : Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years ?
Answer» Solution :No, it is not possible that productivity and diversity of natural community remain constant over a CERTAIN time period because: (i) The natural HABITAT is never maintained as such. (ii) Sufficient abundant RESOURCES are never available and there is always shortage of it.(iii) Environmental conditions for survival and REPRODUCTION are continuously CHANGING.

Discussion

14263.	Question : Life is present even below the sheet of ice in Antarctica because
Answer» Water POSSESSES high latent heat Water is source of molecular oxygen to biosphere Being BAD conductor of heat, ice protects the water from FREEZING underneath Water HELPS in synthesis as well as breaking up of complex molecules. Answer :C

Discussion

14264.	Question : Life of the effector cells of immune system is
Answer» A few WEEKS to SEVERAL years A few days A few years A few MONTHS to WHOLE life Answer :D

Discussion

14265.	Question : …….is favoured by protandry(A) Self pollination(B) Cross pollination(C) Autogamy(D) None of the above
Answer» SELF pollination Cross pollination Autogamy None of the above Answer :B

Discussion

14266.	Question : Life have originated about ......... million years ago.
Answer» 4000 3000 5000 2000 Solution :4000

Discussion

14267.	Question : _____is considered as a megaproject for determining sequency of base pairs in DNA.
Answer» ANSWER :HUMAN GENOME PROJECT

Discussion

14268.	Question : Life has originated in sea water. Justify the statement.
Answer» Solution :ACCORDING to Oparin and HALDANE, the FIRST cell PROTOBIONTS AROSE in the broth (not dilute soup). So it is considered that the life has originated in water.

Discussion

14269.	Question : _____is called suicidal bag of the cell.
Answer» ANSWER :LYSOSOME

Discussion

14270.	Question : _____is commonly called Indian bee.
Answer» ANSWER :APIS INDICA

Discussion

14271.	Question : Life had its origin by:
Answer» SPECIAL creation Spontaneous generation Biogenesis Chemical evolution Answer :D

Discussion

14272.	Question : ____is called Bleeder's disease.
Answer» ANSWER :HAEMOPHILIA

Discussion

14273.	Question : Life cycle of Ectocarpus and Fucus respectively are
Answer» HAPLONTIC, Diplontic Diplontic, Haplodiplontic Haplodiplontic, Diplontic Haplodiplontic, Haplontic Solution :(c) ECTOCARPUS and Fucus respectively show haplodiplontic and diplontic LIFE cycle.Concept EnhancerIn Ectocarpus sporic meiosis occursand HAPLOID biflagellate meiozoospores are formed. They germinate to PRODUCE gametophytic thalli. The gametophytes liberate gametes, which fuse to form diploid zygote, which gives rise to a diploid plant.

Discussion

14274.	Question : ...............Is calld brewer's yeast, which is used for fermenting malted cereals and fruit juices to produce ethanol.
Answer» SACCHAROMYCES cerevisiae Clostridium butylicum Trichodermapolysporum Penciliumnotatum Answer :A

Discussion

14275.	Question : Life cycle of Lac insect.
Answer» SOLUTION :

Discussion

14276.	Question : _____is called as blood bank of the body.
Answer» Heart Kidney Spleen Brain Answer :C

Discussion

14277.	Question : Life cannot originate from the inorganic material at present becauuse of presence of
Answer» Very low atmospheric temperatue High DEGREE of environmental POLLUTION Very high amount of OXYGEN in atmosphere Absence of RAW materials Answer :C

Discussion

14278.	Question : Life cannot originate from inorganic materials at present, because
Answer» Absence of RAW materials Very high ATMOSPHERIC temperature High degree of ENVIRONMENTAL pollution A very high amount of `O_(2)` in atmosphere Answer :D

Discussion

14279.	Question : __________is an example of auto triploid
Answer» Coffee Banana Potato Peanut Answer :B

Discussion

14280.	Question : Life cannot originate from inorganic materials at present because of
Answer» HIGH pollution High ATMOSPHERIC temerature Oxidising environmnet Absence of RAW materials Answer :C

Discussion

14281.	Question : ________________is always the main objective of plant breeding.
Answer» ANSWER :HIGHER YIELD

Discussion

14282.	Question : Lichens represent mutualism between
Answer» Fungus and higher plants Fungus and CYANOBACTERIA SEA ANEMONE and clown FISH Barnacle and whale Answer :B

Discussion

14283.	Question : Is an aquarium a complete ecosystem?
Answer» Solution :AQUARIUM is an artificially made ecosystem my Mom-Dad. The ecosystem which possesses all physical and BIOTIC components are PRESENT, It is called complete. When aquarium contains biotic components (PLANTS and fishes) and abiotic components (air and WATER) become necessary for saviour of fishes.

Discussion

14284.	Question : Life cannot originate from inorganic material at present because
Answer» very LOW atmospheric pressure HIGH degree of ENVIRONMENTAL pollution very high amount of oxygen in the atmosphere absence of RAW material Answer :C

Discussion

14285.	Question : ____is a viral disease that weakens muscles.
Answer» ANSWER :Poliomyeletis

Discussion

14286.	Question : ____is a traditional drink in Southern India and is the fermented product of palm sap.
Answer» ANSWER :TODDY

Discussion

14287.	Question : Lichens are well known combination of an alga and a fungus where fungus has:
Answer» an EPIPHYTIC RELATIONSHIP with the alga a parasitic relationship with the alga a SYMBIOTIC relationship with the alga a saprophytic relationship with alga Answer :C

Discussion

14288.	Question : ________________is a semidwarf wheat variety introduced from Mexico.
Answer» ANSWER :SONORA 64

Discussion

14289.	Question : Is a primary consumer
Answer» GRASS GOAT TIGER MAN SOLUTION :Goat

Discussion

14290.	Question : Lichens are the associations of
Answer» BACTERIA and fungus. Algae and bacterium. Fungus and algae. Fungus and virus. Answer :C

Discussion

14291.	Question : Lichens are the associations of :
Answer» FUNGUS and algae fungus and virus bacteria and fungus algae and bacterium Answer :A

Discussion

14292.	Question : ........is a non steroidal pills .
Answer» SAHELI A and C both PILLS None Answer :A

Discussion

14293.	Question : Lichens are the association of :
Answer» BACTERIA and FUNGUS ALGAE and bacterium fungus and algae fungus and virus Answer :C

Discussion

14294.	Question :__________is a metabolic disorder that occurs due to the lack of an enzyme that converts phenylalanine to tyrosine.
Answer» SOLUTION :PHENYLKETONURIA

Discussion

14295.	Question : Lichens are described as indicators of
Answer» WATER pollution Soil pollution Agriculture productivity Air pollution Answer :D

Discussion

14296.	Question : Lichens are association of
Answer» bacteria and FUNGUS alga and bacterium fungus and alga fungus and virus Solution :•Lichens are the mutualistic association of fungus and algae. • Algae being photosynthetic prepares FOOD while fungi PROVIDE WATER and shelter.

Discussion

14297.	Question : _____is a living mechanical tissue
Answer» ANSWER :COLLENCHYMA

Discussion

14298.	Question : Is a least porus soil
Answer» LOAM soil Clay soil Peaty soil Sandy soil ANSWER :B

Discussion

14299.	Question : Lichen stage : Pioneer species in Xerarch _____ : Pioneer species in hydrarch
Answer» SOLUTION :PHYTOPLANKTON STAGE

Discussion

14300.	Question : Lichen is the association of
Answer» PROTISTA and ALGAE FUNGI and BACTERIA protista and fungi algae and fungi ANSWER :d

Discussion

Explore topic-wise InterviewSolutions in .

Question : Is it true that if the dissolved oxygen level drops to zero, the water will become septic. Give an example which could lower the dissolved oxygen content of an aquatic body.

Question : Life span of worker bee is :

Question : Is life still originating ?

Question : Life spam of Cow is .20-25 years. What is the life spam of horse?

Question : Explain about life span of organisms ?

Question : Life originated on earth nearly ................. years ago.

Question : Is it right to name the layer of simple cuboidal epithelium on the surface of ovary as germinal epithelium?

Question : Is it true that carpets and curtains/drapes placed on the floor or wall surfaces can reduce noise level. Explain briefly ?

Question : Life originates from pre-existing living being' OR Theory of biogenesis was advocated by whom?

Question : Is it possible to achieve .zero population growth rate? If yes, what kind of age pyramid is obtained?

Question :Life originated from the earths inorganic atmosphere is the post but this no longer happens today.

Question : Is it possible that productivity and diversity of a natural community remain constant over a time period of, say one hundred years ?

Question : Life is present even below the sheet of ice in Antarctica because

Question : Life of the effector cells of immune system is

Question : …….is favoured by protandry(A) Self pollination(B) Cross pollination(C) Autogamy(D) None of the above

Question : Life have originated about ......... million years ago.

Question : _____is considered as a megaproject for determining sequency of base pairs in DNA.

Question : Life has originated in sea water. Justify the statement.

Question : _____is called suicidal bag of the cell.

Question : _____is commonly called Indian bee.

Question : Life had its origin by:

Question : ____is called Bleeder's disease.

Question : Life cycle of Ectocarpus and Fucus respectively are

Question : ...............Is calld brewer's yeast, which is used for fermenting malted cereals and fruit juices to produce ethanol.

Question : Life cycle of Lac insect.

Question : _____is called as blood bank of the body.

Question : Life cannot originate from the inorganic material at present becauuse of presence of

Question : Life cannot originate from inorganic materials at present, because

Question : __________is an example of auto triploid

Question : Life cannot originate from inorganic materials at present because of

Question : ________________is always the main objective of plant breeding.

Question : Lichens represent mutualism between

Question : Is an aquarium a complete ecosystem?

Question : Life cannot originate from inorganic material at present because

Question : ____is a viral disease that weakens muscles.

Question : ____is a traditional drink in Southern India and is the fermented product of palm sap.

Question : Lichens are well known combination of an alga and a fungus where fungus has:

Question : ________________is a semidwarf wheat variety introduced from Mexico.

Question : Is a primary consumer

Question : Lichens are the associations of

Question : Lichens are the associations of :

Question : ........is a non steroidal pills .

Question : Lichens are the association of :

Question :__________is a metabolic disorder that occurs due to the lack of an enzyme that converts phenylalanine to tyrosine.

Question : Lichens are described as indicators of

Question : Lichens are association of

Question : _____is a living mechanical tissue

Question : Is a least porus soil

Question : Lichen stage : Pioneer species in Xerarch _____ : Pioneer species in hydrarch

Question : Lichen is the association of