24277 + Interview Questions in Biology in Class 12 Page 150 InterviewSolution

7451.	Question : Sugarcane is one of the importantcash crops in India. It isgrown to obtain
Answer» STARCH GLUCOSE FRUCTOSE SUCROSE SOLUTION :Sugarcaneis genrally grownto obtainsucrose.

Discussion

7452.	Question : Sugar fructose is present in the secretion of
Answer» Prostate GLAND PERINEAL glande Cowper's gland SEMINAL VESICLES. Answer :D

Discussion

7453.	Question : Sudden reappearance of certain ancestral chracters which had either disappeared or were reduced is known as
Answer» ADAPTIVE radiation Atavism Convergent evolution Phylogeny Answer :B

Discussion

7454.	Question : Sudoriferous glands present in external auditory meatus are
Answer» MEIBOMIAN GLANDS Glands of ZEIS Glands of Moll Ceruminous glands Answer :D

Discussion

7455.	Question : Sudha, who is on third trimester of gestation suddenly faced the labour pain and she is immediately admitted to hospital. On diagnosis, medical experts found that the position of the baby inside the uterus remain unfit for normal vaginal delivery. What would be the further step taken by the doctors to deliver the baby from uterus?
Answer» Solution :When normal vaginal delivery is not possible due to FACTORS like position of the BABY and nature of the PLACENTA, the baby is delivered through a surgical INCISION in the woman.s abdomen and uterus. It is ALSO termed as abdominal delivery or caesarean section or C-section.

Discussion

7456.	Question : Suddenly appearing large and stable variations in organisms is called______.
Answer» ANSWER :RECESSIVE

Discussion

7457.	Question : Suction pressure of cell as:
Answer» EQUAL to WALL pressure Equal to TURGOR pressure Equal to DPD Osmotic pressure Answer :C

Discussion

7458.	Question : Sucrosemovesintothe companioncells, theninto the living_____ byactivetransport .
Answer» SOLUTION :SIEVE tubecells

Discussion

7459.	Question : Sucrose is a disaccharide formed of two subunit sugars which are
Answer» GLUCOSE + Fructose Galactose + Glucose Glucose + glucose Galactose + Fructose Answer :A

Discussion

7460.	Question : Sucrose is an example of
Answer» Disaccharide Polysaccharide Monosaccharide Both (B) and (C) ANSWER :A

Discussion

7461.	Question : Sucker are I Formed from the inernode of undergound stem II fromed from the node of undergoound stem III roots which are formed from the upper poriton of nodes IV roots which are formed form the lower portion of nodes
Answer» I II and III I and II II and IV I and III Answer :A

Discussion

7462.	Question : Sucker fish and shark live in close association, is a classic example of commensalism.What is commensalisms?
Answer» Solution :Commensalism-This is the INTERACTION in which ONE species benefits and the other is nethir HARMED nor benefited

Discussion

7463.	Question : Sucrase is an enzyme found in :-
Answer» Saliva Gastric juice Intestinal juice Pancreatic juice Answer :C

Discussion

7464.	Question : Sucker fish and shark live in close association, is a classic example of commensalism. What is commensalism?
Answer» Solution :It is an interaction between TWO different SPECIES in which one species is benefited and the other is NEITHER harmed nor benefited.

Discussion

7465.	Question : Succus entericus is the name given to -
Answer» Appendix Swelling of the gut Swelling of the gut Junction between ILEUM and LARGE intestine Answer :C

Discussion

7466.	Question : succulent plants occur in
Answer» DESERTS ECOSYSTEM TUNDRA ecosystem Temperate deciduous forests Tropical rain forests ANSWER :A

Discussion

7467.	Question : Succinate dehydrogenase enzyme is found
Answer» In MITOCHONDRIAL matrix On OUTER mitochondrial MEMBRANE on INNER mitochondrial membrane In ribosomes Answer :C

Discussion

7468.	Question : Succession which takes in water or very wet areas is called
Answer» HYDRARCH SUCCESSION Xerarch succession TETRARCH succession All the above SOLUTION :Hydrarch succession

Discussion

7469.	Question : successional community which is relatively stable and is in equilibrium with the environment referred as
Answer» seral COMMUNITY PIONEER community CLIMAX community TRANSITIONAL community Answer :C

Discussion

7470.	Question : Succession on different habitat are differentin nature Mention the type of climax community that will ultimately get established.
Answer» SOLUTION :The CLIMAX COMMUNITY will be a FOREST.

Discussion

7471.	Question : Succession on different habitat are differentin nature Name the pioneer species on a bare rock.
Answer» SOLUTION :LICHENS are the PIONEER SPECIES

Discussion

7472.	Question : Successfully breddomesticated varieties from while plans and elements are obtained through
Answer» ARTIFICIAL selection Selective crossing Emasculation all EXCEPT (3) ANSWER :D

Discussion

7473.	Question : Succession in an ecosystem is the result of:
Answer» OCCURRENCE of diseases changes in GRAZING habits of animals competition among animals adaptive ability to ENVIRONMENTAL changes Answer :D

Discussion

7474.	Question : Plant succession initiating in sand____________.
Answer» a) Hydrosere B) Psammosere c) Halosere d) Lithosere Answer :B

Discussion

7475.	Question : Substrate level phosphorylation occurs when:
Answer» Succinic acid CHANGES to fumaric acid Fumaric acid CHANGE to malic acid Succinyl COA changes to succinic acid Oxaloacetic acid changes to `PROP` ketoglutaric acid Answer :C

Discussion

7476.	Question : Substrate level phosphorylation occurs during which step ofKreb's cycle?
Answer» SUCCINYL - CoA `to` Sucinic acid Isocitric acid `to`Oxalosuccinic acid Oxalosuccinic acid `to ALPHA`- Ketoglutaric acid Malic acid `to` OAA ANSWER :A

Discussion

7477.	Question : Substrate foe amylase enzyme is
Answer» Nuleic ACID Protien Retinol IODINE Answer :C

Discussion

7478.	Question : Substances which are harmful to organisms of biosphere are called :
Answer» Fertilizer Pollution Pollutants Radioisotopes ANSWER :C

Discussion

7479.	Question : Substitution of a purine base with a pyrimidine base or vice versa is called
Answer» Transition Transversion Deletion Addition Answer :B

Discussion

7480.	Question : Substance which lack their own mutagenic properties but enhance the effects of known mutagens _____
Answer» SOLUTION :COMUTAGENS

Discussion

7481.	Question : Substance of pollen wall which preserves the pollen during fertilization ……….. .
Answer» SOLUTION :SPOROPOLLENIN

Discussion

7482.	Question : Subsidary cells are present in :-
Answer» Lenticles Stomatal apparatus Roots Ovule (NEAR by EGG CELL) ANSWER :B

Discussion

7483.	Question : submerged hydrophytes have a well-developed
Answer» vascular SYSTEM AERENCHYMA ROOT system stomatal system Answer :B

Discussion

7484.	Question : Subaerial stem modification with long internode is
Answer» tuber PHYLLODE phyloclade runner Solution :In subaseirl modification the stems are dilicated THIN weak and unable to stand rerect runner grow prostrate in all direction s abvoe the SOIL level it has a creeping stem with long internodes on the lower side nodes BEAR adventitious roots

Discussion

7485.	Question : Sub field of genomics that deals with the comparison of entire genomes of different species is
Answer» FUNCTIONAL genomics Structural genomics COMPARITIVE genomics Comparitive bioinformatics Answer :C

Discussion

7486.	Question : Stung by hairs of nettle leaves causes burning pain. This isdue to injection of
Answer» Acetic acid Methanoic acid Suphuric acid Hydrochloric acid Solution :Stung by hairsof nettle leaves causes burning pain. This is due tothe injection of methanoic acid. Methanoic acid is the SIMPLEST carboxylicacid. It isalso knownas FORMIC acid. It's molecular FORMULA is HCOOH or `CH_2O_2`. It occurs naturally in a variety ofsources, such as STINGING ants, nettles, pine needles, and sweat.

Discussion

7487.	Question : Sub-arachnoid space is present between
Answer» CRANIUM and duramater Duramater and arachnoid Arachnoid and PIA mater Two LATERAL ventricles Answer :C

Discussion

7488.	Question : stuned growth in absence of mycorrhiza can be seen in
Answer» pinus orchids cycas bryophytes Answer :A

Discussion

7489.	Question : Study the three age pyramids of human population and answer the following questions.Which one is ideal for a population.Suggest reason.
Answer» Solution :Epanding ,Pre PRODUCTIVE INDIVIDUALS are more in number than REPRODUCTIVE and POST reproductive

Discussion

7490.	Question : Study the three age pyramids of human population and answer the following questions.Name of A,B and C pyramids.
Answer» Solution :A) Expending ,B)Stable,C)DECLINING

Discussion

7491.	Question : Study the three age pyramids of human population and answer the following questions.How does such age pyramids help policymakers of the country.
Answer» SOLUTION :It REFLECTS the GROWTH STATUS

Discussion

7492.	Question : Study the statement (a-d) and select the correct option (a) A lion eating a deer and sparrow feeding on grains are consumers (b) Predator starfish, pisaster, helps in maintaining diversity of some invertebrates Predators ultimately lead to extinction of prey species (d) Plant chemicals like nicotine and strychnine are produced due to metabolic disorders
Answer» C& d a & d a & b b & c ANSWER :C

Discussion

7493.	Question : Study the table given below. Do not copy the table, but write the answers in the correct order.
Answer» Solution :(a) Streptococcus (b) CLOT BUSTER (c) STATINS (d) Inhibit CHOLESTEROL synthesis (e) Streptococcus LACTIS (f) In pickles

Discussion

7494.	Question : Study the population growth curves shown above (i) Identify curves 'a' and 'b'. (ii) Mention the conditions responsible for the curves 'a' and 'b' respectively. (iii) Give the necessary eqution for the curve 'b'
Answer» Solution :(i) a = when resources are not limlting the growrh, Plot exponental growth curve. `(dN)(dt)=rN` b = when resources are LIMITING the growth, Plot is logistic growth curve. `(dN)/(dt) = rN ((K-N)/(K))` (ii) In nature a given habitat has enough resources to support a maximum possible NUMBER, beyond which no further growth is possible. Aa population growing in a habitat with limited resources shows a lag PHASE which is followed by phases of acceleration and declaration and finally an asymptote. (iii) `(dN)/(dt) = rN ((K-N)/(K))` N = Population density at time (t) r = Instrinsic rate of natural INCREASE K =carring capacity.

Discussion

7495.	Question :Study the pie-diagram and answer the questions which follows: What do A, B, C and D represent in these diagrams.
Answer» SOLUTION :`Ato ` Crustaceans B `to` Insects C `to` MOSSES D ` to ` FUNGI

Discussion

7496.	Question : Study the relationshipof the givenpair and fillup the blanks a.Hibernation: Bears : :Aestivation : ………… b. Whiderangeof salinity :Euryhaline :Narrowrangeof salinity : ……….
Answer» SOLUTION :a. Sinailb. STENOHALINE

Discussion

7497.	Question : Study the process given below and mention the phenomena A and B (a) Meristematic tissue overset(A)rarr Permanent tissue (b) Callus overset(B)rarr Embryoid
Answer» SOLUTION :(a) A - DIFFERENTIATION (B) B - REDIFFERENTIATION

Discussion

7498.	Question : Study the mRNA segment given above which is complete to be translated into a polypeptide chain. (i) Write the codons'a' and 'b' (ii) What so they code for ? (iii) How is peptide bond formed between two amino acids in the ribosome ?
Answer» Solution :(i) a = AUG b =`UAA//UAG//UGA` (ii) AUG = Met = methionine UAA = does not code for any amino acid, i.e., stop TERMINATING codon. (III) In a polypeptide chain, the adjunct amino acids are LINKED to each other by a peptide BOND

Discussion

7499.	Question : Study the pedigree chart of a family showing the inheritance of myotonic dsytrophy The trait under study is
Answer» DOMINANT X-linked recessive X-linked autosomal dominant recessive Y-linked Solution :Autosomal domionant trait can express its EFFECT in homozygpous as WELL as heterzygous CONDITION.

Discussion

7500.	Question : Study the pathway given below: In which of the following options correct words for all the three blanks A,B and C are indicated ?
Answer» `{:(A,B,C),("Fixation ","TRANSAMINATION" ,"Regeneration "):}` `{:(A,B,C),("Fixation"," Decarboxylation"," Regeneration"):}` `{:(A,B,C),("Carboxylation","Decarboxylation","REDUCTION "):}` `{:(A,B,C),("Decarboxylation"," Reduction ","Regeneration"):}` ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Sugarcane is one of the importantcash crops in India. It isgrown to obtain

Question : Sugar fructose is present in the secretion of

Question : Sudden reappearance of certain ancestral chracters which had either disappeared or were reduced is known as

Question : Sudoriferous glands present in external auditory meatus are

Question : Suddenly appearing large and stable variations in organisms is called______.

Question : Suction pressure of cell as:

Question : Sucrosemovesintothe companioncells, theninto the living_____ byactivetransport .

Question : Sucrose is a disaccharide formed of two subunit sugars which are

Question : Sucrose is an example of

Question : Sucker are I Formed from the inernode of undergound stem II fromed from the node of undergoound stem III roots which are formed from the upper poriton of nodes IV roots which are formed form the lower portion of nodes

Question : Sucker fish and shark live in close association, is a classic example of commensalism.What is commensalisms?

Question : Sucrase is an enzyme found in :-

Question : Sucker fish and shark live in close association, is a classic example of commensalism. What is commensalism?

Question : Succus entericus is the name given to -

Question : succulent plants occur in

Question : Succinate dehydrogenase enzyme is found

Question : Succession which takes in water or very wet areas is called

Question : successional community which is relatively stable and is in equilibrium with the environment referred as

Question : Succession on different habitat are differentin nature Mention the type of climax community that will ultimately get established.

Question : Succession on different habitat are differentin nature Name the pioneer species on a bare rock.

Question : Successfully breddomesticated varieties from while plans and elements are obtained through

Question : Succession in an ecosystem is the result of:

Question : Plant succession initiating in sand____________.

Question : Substrate level phosphorylation occurs when:

Question : Substrate level phosphorylation occurs during which step ofKreb's cycle?

Question : Substrate foe amylase enzyme is

Question : Substances which are harmful to organisms of biosphere are called :

Question : Substitution of a purine base with a pyrimidine base or vice versa is called

Question : Substance which lack their own mutagenic properties but enhance the effects of known mutagens _____

Question : Substance of pollen wall which preserves the pollen during fertilization ……….. .

Question : Subsidary cells are present in :-

Question : submerged hydrophytes have a well-developed

Question : Subaerial stem modification with long internode is

Question : Sub field of genomics that deals with the comparison of entire genomes of different species is

Question : Stung by hairs of nettle leaves causes burning pain. This isdue to injection of

Question : Sub-arachnoid space is present between

Question : stuned growth in absence of mycorrhiza can be seen in

Question : Study the three age pyramids of human population and answer the following questions.Which one is ideal for a population.Suggest reason.

Question : Study the three age pyramids of human population and answer the following questions.Name of A,B and C pyramids.

Question : Study the three age pyramids of human population and answer the following questions.How does such age pyramids help policymakers of the country.

Question : Study the table given below. Do not copy the table, but write the answers in the correct order.

Question : Study the population growth curves shown above (i) Identify curves 'a' and 'b'. (ii) Mention the conditions responsible for the curves 'a' and 'b' respectively. (iii) Give the necessary eqution for the curve 'b'

Question :Study the pie-diagram and answer the questions which follows: What do A, B, C and D represent in these diagrams.

Question : Study the relationshipof the givenpair and fillup the blanks a.Hibernation: Bears : :Aestivation : ………… b. Whiderangeof salinity :Euryhaline :Narrowrangeof salinity : ……….

Question : Study the process given below and mention the phenomena A and B (a) Meristematic tissue overset(A)rarr Permanent tissue (b) Callus overset(B)rarr Embryoid

Question : Study the mRNA segment given above which is complete to be translated into a polypeptide chain. (i) Write the codons'a' and 'b' (ii) What so they code for ? (iii) How is peptide bond formed between two amino acids in the ribosome ?

Question : Study the pedigree chart of a family showing the inheritance of myotonic dsytrophy The trait under study is

Question : Study the pathway given below: In which of the following options correct words for all the three blanks A,B and C are indicated ?