24277 + Interview Questions in Biology in Class 12 Page 448 InterviewSolution

22351.	Question : All given are dry fruits, except
Answer» LEGUME CAPSULE CARYOPSIS BERRY. ANSWER :D

Discussion

22352.	Question : All genes located on the same chromosome.
Answer» From diffeent groups DEPENDING upon their RELATIVE distacne FORM one linkage group will not form any linkage groups Form interactive groups that AFFECT the phenotype Answer :B

Discussion

22353.	Question : All fruits are produced from the ovary of a fertilized flower . Write an exception to this statement and explain.
Answer» Solution :In CERTAIN PLANTS some part of a flower in addition to the OVARY ALSO participate in the development of fruits . Such fruits are called false fruits. e.g In apple the thalamus is DEVELOPED to form the fleshy structure .

Discussion

22354.	Question : All enzymes of TCA cycle except succinic dehyd rogenase and cytochrome oxidase are found in
Answer» cytosole and oxysomes matrix of mitochondrion inner MEMBRANE of mitochondrion outer membrane of mitochondrion Answer :B

Discussion

22355.	Question : All enzymes of TCA cycle are located in the mitochondria matrix except one, which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is
Answer» LACTATE DEHYDROGENASE Isocitrate dehydrogenase MALATE dehydrogenase SUCCINATE dehydrogenase ANSWER :D

Discussion

22356.	Question : Enzymes of Krebs cycle are located in the matrix of mitochondria except one which is located in the inner mitochondrial membrane. Name the enzyme.
Answer» Isocitrate dehydrogenase Malate dehydrogenase Succinate dehydroginase Lactate dehydrogenae Answer :C

Discussion

22357.	Question : All enzymes are present in matrix of mitchondria for TCA cycle except:
Answer» `ALPHA`-Ketoglutaric ACID dehydrogenase Citrate synthetase Syccinate dehydrogenase Decarboxylase Answer :C

Discussion

22358.	Question : "All enzymes are proteins." s statement is now modified because an apparent exception to this biological truth is
Answer» Arylsulphatase Dehydrogenase Ribozyme Nitroreductase Answer :C

Discussion

22359.	Question : All chordates have(a) Notochord in adult stage(b) Solid nerve cord during embryonic stage(c) Triploblastic nature(d) Dorsal heart
Answer» NOTOCHORD in adult STAGE Solid NERVE cord during EMBRYONIC stage TRIPLOBLASTIC nature Dorsal heart Answer :C

Discussion

22360.	Question : All changes that an organism goes through during it's life cycle from germination of the seed to senescence is called
Answer» ANSWER :DEVELOPMENT

Discussion

22361.	Question : All are true for mycorrhizal association except.
Answer» Pious seeds cannot germinate properly without such association It's a SYMBIOTIC association of FUNGUS and roots of higher plants Surface area for water absorption increases Associated fungus GET MINERALS from plants Answer :D

Discussion

22362.	Question : All are the true statements about IgM except :-
Answer» Pentamer form Can CROSS placenta Synthesis after acute infection in blood Mostly INTRAVASCULAR in distribution Answer :B

Discussion

22363.	Question : All are the function of sympathetic nervous system except:-
Answer» Increase SWEAT GLAND secretion Increase lacrimal gland secretion Relax the MUSCLE of URINARY bladder Constrict bronchi Answer :D

Discussion

22364.	Question : All are true about spinal cord except :–
Answer» EPIDURAL space around MENINGES is present Pseudounipolar neurons in ventral ROOT Sensory fibre in DORSAL root and motor fibre in ventral root Lateral horn related to ANS Answer :B

Discussion

22365.	Question : All are the function of antibody except :-
Answer» Antigen binds with antibody leading to cell lysis After BINDING of antigen with antibody facilitate phagocytosis Body cell DIRECTLY binds with antigen and KILL the antigen related cell by releasing lymphotoxic substances Antibodies also bind with bacterial products and inhibit the ACTIVITY of bacterial product Answer :C

Discussion

22366.	Question : All are theelementswhosedeficiencysymptomsfirstappearintheoldertissues,except
Answer» NITROGEN Calcium Potassium MAGNESIUM Answer :B

Discussion

22367.	Question : All are the biotechnological applications in order to increase food production except
Answer» APICULTURE Agro-chemical based AGRICULTURE Organic FARMING Genetically ENGINEERED crop-based agriculture Solution :Apiculture

Discussion

22368.	Question : All are examples of broadly utilitarian except
Answer» Pollination OXYGEN Aesthetic pleasure of WALKING through woods pooma FIREWOOD Solution :Firewood

Discussion

22369.	Question : All Albizzia, vegetative propagation takes place with the help of
Answer» FASCICULATED TUBEROUS roots Epiphyllous buds Subaerial branches Nonfleshy roots. Answer :D

Discussion

22370.	Question : Alkaloid found in tabacco is…..
Answer» Atropine Cocaine heroin nicotine Answer :C

Discussion

22371.	Question : Alkaptomuries excrete excess of
Answer» URINE Albumen Malonylacetic ACID Homogentisic acid Answer :D

Discussion

22372.	Question : 'Alien species invasion leads to extinction of Indigenous species' - Justify the statement by considering two plants as examples.
Answer» Solution :Some alien species when INTRODUCED unintentionally. Become invasive and CAUSE harmful impact resulting in extinction of the indigenous species. Example 1:- Nile perch, a LARGE predator fish when introduced in lake Victoria caused the extinction of CICHLID fish in the lake. Example 2:- Introduction of African cat fish (Clarias gariepinus) for aquaculture purposes is posing a THREAT to the indigenous cat fishes of Indian rivers.

Discussion

22373.	Question : Alien species are highly invasive and are a threat toindigenous species. Substantiate this statement With any three examples.
Answer» Solution :(i) Some alien (exotic) species become invasive and cause maximum harmful IMPACT and the extinction of the indigenous species. (ii) Nile perch a large predator FISH was introduced 1n lake Victoria (East Africa) caused the extinction of an ecologically unique species of cichlid fish in the lake. (III) Invasive weed species like parthenium, LANTANA and EICCHORNIA caused environmental damage and pose threat to our native species. (iv) Introduction of African catfish (clarias gariepinue) for aqua culture purposes is posing a threat to the indigenous cat fishes of Indian rivers.

Discussion

22374.	Question : Alien species invasion leads to extinction of indigenous species' - Justify this statement by considering two animals as examples.
Answer» Solution :Eg 1. : The Nile perch introduced into Lake Victoria in east Africa lead to the extinction of more than 200 species of cichlid fish in the lake. Eg 2.: The invasive WEED species like carrot grass (Parthenium), WATER hyacinth (Eicchornia) and Lantana posed threat to our native species. Eg 3. : The illegal introduction of African cat fish (Clariasgariepinus) posed threat to indigenous cat fishes in our rivers. Detailed Answer: New species entering the geographical region are known as ALIEN species. Introduction of alien species causes significant loss to the biological community. Some of the species are able to establish the area. Such successful exotic species eliminate the native species to the point of extinction. And so alter the habitat that many native species are no longer able to persist. For example- Introduction of Nile perch into Lake Victoria disturbed the ecosystem of lake by eliminating several native species of small cichlid fishes. When the toxic species of water hyacinth were introduced in India it CAUSED huge water pollution and occupied all the water bodies.

Discussion

22375.	Question : "Alien species are highly invasive and are a threat to local species". Substantiate this with any two examples.
Answer» Solution :a) The Nile perch introduced into Lake Victoria in east Africa LED eventually to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake. b) The ENVIRONMENTAL damage caused and threat posed to our native species by invasive WEED species like carrot grass (parthenium), Lantana and wsater hyacinth (Eicchornia). c) Illegal introduction of the African catfish Clarias gariepinus for AQUA culture purpose is posing a threat to the indigenous catfishes in our RIVERS.

Discussion

22376.	Question : Alginic acid is present in the cell wall of
Answer» Bacillarlophyceae Myxophyceae Xanthophyceae Laminaria Answer :D

Discussion

22377.	Question : Algin can be obtained from :-
Answer» RED ALGAE & GREEN algae Brown algae & red algae Red algae Brown algae Answer :D

Discussion

22378.	Question : Algal blooms impart a distinct colour to water due to
Answer» their pigments excretion of coloured substances formation of coloured chemicals in water facilitated by physiological degradation of algae absorption of light by algal cell wall. Solution :Algal blooms are considered as POLLUTANTS of water, as they have very DAMAGING EFFECTS on flora and fauna of that water body. The color imparted by them DEPENDS on the colour of major PIGMENT in them. For e.g., chlorophyll imparts the characteristic green colour. Also refer to answer 19.

Discussion

22379.	Question : Algal bloomand eutrophicationare twoeffectsofwater pollution write the differences betweenthetwo .
Answer» Solution :Algal BLOOM : Excessive GROWTHOF planktonicalgae dueto thepresenceof large AMOUNTOF nutrientsin water Eutrophication:Naturalagingof a LAKE bynutrientenrichmentof itswater.

Discussion

22380.	Question : Algal blooms impart a distinct colour to water due to :(A) their pigments(B) excretion of coloured substances(C) formation of coloured chemicals in water facilitated by physiological degradation of algae.(D) absorption of light by algal cell wall.
Answer» their pigments excretion of coloured substances formation of coloured chemicals in water facilitated by physiological degradation of algae. absorption of LIGHT by algal cell wall. Solution :Algal blooms impart a distinct colour to water DUE to their pigments. Type of Algae : (i) GREEN Algae (ii) Brown Algae (iii) RED Algae (iv) Blue-Green Algae Pigments: (i) Chlorophyll-a and b (ii) Chlorophyl 1. a and c, fucoxanthin (iii) Chlorophyll-a and d phycoerythrin (iv) Chlorophyll-a, carotenoids, PHYCOBILINS and phycoerythrene

Discussion

22381.	Question : Algae in which sexual reproduction is oogamous type and complex post fertilization development is found ?
Answer» RED Algae Green Algae Fungi Brown Algae Answer :A

Discussion

22382.	Question :Algae have cell wall made of -
Answer» Cellulose, HEMICELLULOSE, PECTINS and protein Cellulose, galactans, mannans and MINERALS like calcium carbonate Chitin Peptidoglycans ANSWER :B

Discussion

22383.	Question : Alfred Wallace
Answer» Solution :A NATURALIST worked in Malay ARCHIPELAGO, came to a similar CONCLUSIONS LIKE Darwin. Thus they both jointly propounded the .Theory of natural SELECTION.

Discussion

22384.	Question : Alfred sturtevant to measure the distance between genes and mapped their position on the chromosome used the frequency of
Answer» RECOMBINATION between gene pairs on the two DIFFERENT CHROMOSOMES Recombination between gene pairs on the same chromosome Gene PAIRING on two different chromosomes Gene pairing on the same chromosome Answer :B

Discussion

22385.	Question : Alfred Wallace worked in
Answer» Galapagos island AUSTRALIAN island CONTINENT Malay ARCHIPELAGO none of these Solution :ALFRED Wallace worked in Malay Archipelago. He came to similar CONCLUSIONS around the same time as Darwin.

Discussion

22386.	Question : Alexander von Humbolt described for the first time
Answer» ecological biodiversity LAW of LIMITING factor species area relationships population growth equation SOLUTION :species area relationships

Discussion

22387.	Question : Alexander Fleming observed that the chemical produced by mould in one of his unwashed culture plates restricted the growth of
Answer» streptococcus staphylococcus pneumococcus bacillus Answer :B

Discussion

22388.	Question : Aleurone layer is present in
Answer» the PERIPHERAL PART of scutellum the peripheral part of coleoptile cotyledons the peripheral part of endosperm Answer :D

Discussion

22389.	Question :Aleurone layer is part of :
Answer» ENDOSPERM EMBRYO TEGMEN Testa Answer :A

Discussion

22390.	Question : Alec J.Jeffreys discovered the fundamental technique involved in DNA finger printing, while he was studying the gene for
Answer» DYSTROPHIN myoglobin haemoglobin TUBULIN ANSWER :B

Discussion

22391.	Question : Alec Jeffreys used ………. As genetic marker.
Answer» HUMULIN Radioactive probe RFLP VNTR Answer :D

Discussion

22392.	Question : Aldolase cateysing steps in regeneration phase of calvin cycle are A) 2G3P + 2DHAP rarr 2 F16P B)F6P + G3P rarr XMP C) SMP + G3P rarr XMP + RiMP D) EMP + DHAP rarr SHBP
Answer» All the above AB only BC only AD only Answer :D

Discussion

22393.	Question : Aldosterone is the main
Answer» SEXUAL cortioid glucocorticoid mineralocorticoid androgen Answer :C

Discussion

22394.	Question : Alcoholic fermentation is brought about by ……… .
Answer» Lactobacillus Saccharomyces Trichoderma Streptomyces Answer :B

Discussion

22395.	Question : Alcoholic fermentation is brought about by ……..
Answer» LACTOBACILLUS Saccharomyces TRICHODERMA STREPTOMYCES Answer :A::C

Discussion

22396.	Question : Differentiate between alcoholic fermentation and lactic acid fermentation.
Answer» SOLUTION :

Discussion

22397.	Question :Alcohol is the most socially accepted narcotic.Excessive consumption of alcohol leads to
Answer» STATE of hallucination loss of memory suppresion of BRAIN function Answer :C

Discussion

22398.	Question : Alcohol decreases secretion insulin
Answer» TRUE False Answer :ADH

Discussion

22399.	Question : Albuminous seeds store their food in _____
Answer» ANSWER :ENDOSPERM

Discussion

22400.	Question : Albinism, the total lack of melanin pigment, it due to a recessive gene'a. A normal man and a normal woman. Both of whom had one albino parent, marry. What is the probaility of them having an albino child ?
Answer» 0.5 0.25 0.75 All Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : All given are dry fruits, except

Question : All genes located on the same chromosome.

Question : All fruits are produced from the ovary of a fertilized flower . Write an exception to this statement and explain.

Question : All enzymes of TCA cycle except succinic dehyd rogenase and cytochrome oxidase are found in

Question : All enzymes of TCA cycle are located in the mitochondria matrix except one, which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is

Question : Enzymes of Krebs cycle are located in the matrix of mitochondria except one which is located in the inner mitochondrial membrane. Name the enzyme.

Question : All enzymes are present in matrix of mitchondria for TCA cycle except:

Question : "All enzymes are proteins." s statement is now modified because an apparent exception to this biological truth is

Question : All chordates have(a) Notochord in adult stage(b) Solid nerve cord during embryonic stage(c) Triploblastic nature(d) Dorsal heart

Question : All changes that an organism goes through during it's life cycle from germination of the seed to senescence is called

Question : All are true for mycorrhizal association except.

Question : All are the true statements about IgM except :-

Question : All are the function of sympathetic nervous system except:-

Question : All are true about spinal cord except :–

Question : All are the function of antibody except :-

Question : All are theelementswhosedeficiencysymptomsfirstappearintheoldertissues,except

Question : All are the biotechnological applications in order to increase food production except

Question : All are examples of broadly utilitarian except

Question : All Albizzia, vegetative propagation takes place with the help of

Question : Alkaloid found in tabacco is…..

Question : Alkaptomuries excrete excess of

Question : 'Alien species invasion leads to extinction of Indigenous species' - Justify the statement by considering two plants as examples.

Question : Alien species are highly invasive and are a threat toindigenous species. Substantiate this statement With any three examples.

Question : Alien species invasion leads to extinction of indigenous species' - Justify this statement by considering two animals as examples.

Question : "Alien species are highly invasive and are a threat to local species". Substantiate this with any two examples.

Question : Alginic acid is present in the cell wall of

Question : Algin can be obtained from :-

Question : Algal blooms impart a distinct colour to water due to

Question : Algal bloomand eutrophicationare twoeffectsofwater pollution write the differences betweenthetwo .

Question : Algal blooms impart a distinct colour to water due to :(A) their pigments(B) excretion of coloured substances(C) formation of coloured chemicals in water facilitated by physiological degradation of algae.(D) absorption of light by algal cell wall.

Question : Algae in which sexual reproduction is oogamous type and complex post fertilization development is found ?

Question :Algae have cell wall made of -

Question : Alfred Wallace

Question : Alfred sturtevant to measure the distance between genes and mapped their position on the chromosome used the frequency of

Question : Alfred Wallace worked in

Question : Alexander von Humbolt described for the first time

Question : Alexander Fleming observed that the chemical produced by mould in one of his unwashed culture plates restricted the growth of

Question : Aleurone layer is present in

Question :Aleurone layer is part of :

Question : Alec J.Jeffreys discovered the fundamental technique involved in DNA finger printing, while he was studying the gene for

Question : Alec Jeffreys used ………. As genetic marker.

Question : Aldolase cateysing steps in regeneration phase of calvin cycle are A) 2G3P + 2DHAP rarr 2 F16P B)F6P + G3P rarr XMP C) SMP + G3P rarr XMP + RiMP D) EMP + DHAP rarr SHBP

Question : Aldosterone is the main

Question : Alcoholic fermentation is brought about by ……… .

Question : Alcoholic fermentation is brought about by ……..

Question : Differentiate between alcoholic fermentation and lactic acid fermentation.

Question :Alcohol is the most socially accepted narcotic.Excessive consumption of alcohol leads to

Question : Alcohol decreases secretion insulin

Question : Albuminous seeds store their food in _____

Question : Albinism, the total lack of melanin pigment, it due to a recessive gene'a. A normal man and a normal woman. Both of whom had one albino parent, marry. What is the probaility of them having an albino child ?