22339 + Interview Questions in Biology in Class 11 Page 329 InterviewSolution

16401.	Question : In tropical rain forests, the canopy is thick and shorter plants growing below it, recive filtered light. How are they able to carry out photosynthesis ?
Answer» SOLUTION :The intensity of light and amount affect the rate of PHOTOSYNTHESIS. So plants of various SIZE can perform photosynthesis but the rate of photosynthesis is different whichwill be dependetn o the intensity of light and amount.

Discussion

16402.	Question : In transpiration/guttation water loss is dilute solution of inorganic and organic substances.
Answer» SOLUTION :GUTTATION

Discussion

16403.	Question : In .......... tracheids, thickening material is deposited in the form of rings.
Answer» ANSWER :ANNULAR

Discussion

16404.	Question : In Torpedo , electric organs are modified
Answer» SCALES muscles TEETH FINS ANSWER :B

Discussion

16405.	Question : In thre dimensional view, a transfer RNA molecule appearas
Answer» L SHAPED Y shaped E shaped S shaped ANSWER :A

Discussion

16406.	Question : In this type of selection no speciation takes place but the phenotype stability is maintained within the population over generation.
Answer» STABILIZING selection Directional selection Disruptive selection Adaptive radiation Answer :A

Discussion

16407.	Question : In this type of fossilization, the molecules of the dead body is replaced for molecules by minerals and the original substance being lost through disintegration.
Answer» ACTUAL remains petrifaction natural moulds cast formation Answer :B

Discussion

16408.	Question : In Theobroma cocoa, the inflorescence arise from ..............
Answer» TERMINAL shoot axillary part TRUNK of PLANT leaf node Solution :trunk of plant

Discussion

16409.	Question : In the young cob of maize, numerous filamentous hair-like structures protruding from its tip are
Answer» LONG STYLES of carpels Hair of SEEDS HAIRY PROJECTIONS from the bracts Anthers Answer :A

Discussion

16410.	Question :In the Whittaker five-kingdom system, organisms in the kingdom Protista are .............. or .............. eukaryotes.
Answer» SOLUTION :UNICELLULAR , COLONIAL

Discussion

16411.	Question : In the vascular bundle of leaf, xylem is located towards the adaxial side of the leaf.
Answer» ANSWER :1

Discussion

16412.	Question : In the urinogenital organs of rabbit which one of following part is present in male but not in female ?
Answer» Urethra FALLOPIAN TUBE VAGINA VAS deferens Solution :Vas deferens

Discussion

16413.	Question : In the tissues, the factors favourable for the dissociatio of O_(2) from oxyhaemoglobin are
Answer» a, d, f, h b, c, E, g a, d, f, g b, c, e, h Solution :In the TISSUES, the factors favourable for the DISSOCIATION of `O_(2)` from oxyhaemoglobin are low `pO_(2)", high "pCO_(2)`, HIGHER temperature and low pH (or high `H^(+)`ion).

Discussion

16414.	Question : In __________ the tissues of male and female genotype type form a mosaic.
Answer» Haplo-diploidy Gynandromorphy Genic balance Lygaeus type Answer :B

Discussion

16415.	Question : In the transpiration pull theory, whatcauses the tension that leads to liftingof the water column?
Answer» Solution :Loss of water from the XYLEM to theadjacent cells creates a negative pressurecalled TENSION.

Discussion

16416.	Question : In the tissues, high concentrations of carbon dioxide
Answer» increases the affinity of haemoglobin to both oxygen and hydrogen increases the affinity of haemoglobin to oxygen but decreases its affinity to hydrogen decrease the affnitiy to haemoglobin to oxygen but increases its affinity to hydrogen decrease the affinity of haemoglobin to both oxygen and hydrogen. Solution :INCREASE in the `CO_(2)` content of the blood decreases the pH of the blood. This decreases the affinity of `O_(2)` with HB. This is calle Bohr effect and is closely realted to the fact that deoxygented Hb binds hydrgoen ions ore actively than does the Hb. This facililates GASEOUS exchanges because more` O_(2)` is released in the tissues where the amount of `CO_(2)` is more DUE to metablic ACTIVITY. At the same time, more `O_(2)` is taken up by the lungs or gills when the amount of `CO_(2)` is low.

Discussion

16417.	Question : In the term 'taxonomy' the Greek word taxis means ________.
Answer» SOLUTION :ARRANGEMENT

Discussion

16418.	Question : In the successive seral stages there is a change in the
Answer» Diversity of SPECIES of ORGANISMS NUMBER of species of organisms Increase of total boimass All the above Answer :D

Discussion

16419.	Question : In the stomach, gastric acid is secreted by the……….. .
Answer» GASTRIN SECRETING CELLS parietal cells PEPTIC cells acidic cells SOLUTION :N/A

Discussion

16420.	Question : State whether the following statements are true or false.In the sodium-potassium pump, sodium is transported out of the cell and potassium is transported into the cell as ATP is broken by a membrane protein.
Answer» ANSWER :1

Discussion

16421.	Question :In the root nodules of leguminous plants, what is the role off nitrogenase and leghaemoglobin?
Answer» Solution :Nitrogenase : CATALYSES the conversion of atmospheric/gaseous nitrogen into ammonia. Leghaemoglobin: COMBINES OXYGEN to protect the nitrogenase ENZYME (which is highly sensitive to oxygen),

Discussion

16422.	Question : In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive
Answer» `Ca^(2+)` into the cell `K^+` and `Na^+` out of the cell `Na^+` into the cell `Na^+` out of the cell Solution :The concentration gradients across the resting MEMBRANE are maintained by the ACTIVE transport of ions by the sodium-potassium pump which TRANSPORTS `3 Na^+` outward for `2 K^+` into cell.

Discussion

16423.	Question : In the resting state of the neural membrane diffusion due to concentration gradients, allowed, would drive
Answer» `NA^(+)` into the CELL `Na^(+)` outthe cell `K^(+)` into the cell `K` and `Na^(+)` out of the cell

Discussion

16424.	Question : In the resting muscle fibre, tropomysin partially covers
Answer» CALCIUM binding sites on troponin actin binding sites on myosis muyosin binding sites on actin calcium binding sites on actin. Solution :When the muscle is at REST, the tropomyosin molecule COVERS the binding site of the actin molecule where INTERACTION with myosin occurs.

Discussion

16425.	Question : In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive:
Answer» `NA^+` out of the CELL `K^+` into the cell `Na^+` into the cell `k^+` and `Na^+` out of the cell SOLUTION :Na+ into the cell

Discussion

16426.	Question : In the regions of A-band, the numbers of thick filaments surrounding a thin filament are
Answer» 3 6 12 9 ANSWER :A

Discussion

16427.	Question : In the pyramid for a hypothetical country, the ratio of reproductive females and pre-reproductive females is gt 2. Based on this data, the population size is expected to
Answer» DECREASE steadily Remain ROUGHLY similar Will INCREASE for some TIME and then BECOME stable Increase steadily Answer :A

Discussion

16428.	Question : In the plant cell, cytokinesis occurs by ………….
Answer» Separation of the cytoplasm from the periphery to central region. Separation of the cytoplasm THROUGHOUT the equatorial PLANE SIMULTANEOUSLY. Separation of the cytoplasm from cell centre to its periphery . Following of cytoplasm from two side at right angles to the plane of spindle pole. ANSWER :C

Discussion

16429.	Question : In the nucleotide namely adenosine-5'-tri phosphate, the sequence of linkages among N(base), C(sugar) and P(phosphate) is
Answer» `C-P-N-P-P` `N-C-P-P-P` `P-C-N-P-P` `P-P-P-C-N` ANSWER :B

Discussion

16430.	Question : In the neurilemma, the synaptic vesicles release neurotransmitters into the synaptic ciert by …………………… .
Answer» SOLUTION :EXOCYTOSIS

Discussion

16431.	Question :In the months of April and May one can see a yellowsulphur like dust floating in the Himalayan pine forests. What is it due to ?
Answer» SOLUTION :POLLEN GRAINS of PINES.

Discussion

16432.	Question : In the moss life cycle, the sporophyte:
Answer» CONSISTS of leafy green shoots is the heart-shaped prothallus consists of a foot, a stalk, and a capsule is the DOMINANT GENERATION SOLUTION : consists of a foot, a stalk, and a capsule

Discussion

16433.	Question : In the members of family Fabaceae, the petals showdescending imbricate aestivation.
Answer» ANSWER :1

Discussion

16434.	Question :In the members of Fabaceae stamens and pistilare enclosed and protected by the following
Answer» Posterior STANDARD petal Lateral wing petal ANTERIOR sepals Anterior keel PETALS ANSWER :C

Discussion

16435.	Question : In the meiotic cell division four daughter cells are produced by two successive divisions in which :
Answer» FIRST division is EQUATIONAL and second is reductional first division is reductional and second is equational both divisions are reductional both divisions are equational Answer :B

Discussion

16436.	Question : In the mechanism of action of a protein hormone, one of the second messengers is
Answer» cyclic AMP insulin `T_(3)` gastrin. Solution :The molecules of hormones that are amino ACID derivatives, peptides or protiens are large and insoluble in lipids and cannot enter the target cell. Therefore, they actg at the cell surface. They bind to specific receptor molecuels located on the cell membrane and GENERATE second MESSENGER, e.g., cyclic AMP, `IP_(3),Ca^(++)`, etc.

Discussion

16437.	Question : In the mechanism of action of a protein hormone, one of the second messengers is …………..
Answer» Cyclic AMP Insulin `T_3` GASTRIN Solution :Secondary massengers INVOLVED in PROTEIN HORMONE mechanism.

Discussion

16438.	Question : In the life cycle of Plasmodium exflagellation occurs in ……………. .
Answer» sporozoties microgametes macrogametes SIGNET RING ANSWER :B

Discussion

16439.	Question : In the life cycle of moss, which of the following generations is dominant ?
Answer» HAPLOID GAMETOPHYTE DIPLOID gametophyte Haploid SPOROPHYTE Diploid sporophyte Solution :Haploid gametophyte

Discussion

16440.	Question : In the life cycle of common round worm 2nd and 3rd moults occur in
Answer» In the moist SOIL Intestine of man In the ALVEOLI of lungs In the liver Answer :C

Discussion

16441.	Question : In the life cycle of ascomycetes and basidomycetes cells are
Answer» Monokaryotic Dikaryotic both None ANSWER :C

Discussion

16442.	Question : In the leaves of C_3 plants, peroxisomes are involved in a process celled
Answer» RESPIRATION `C_3` CYCLE `C_2` cycle `C_4` cycle ANSWER :C

Discussion

16443.	Question : In the kingdoms……….. and ........, the cell is a complete organism.
Answer» SOLUTION :MONERA , PROTISTA

Discussion

16444.	Question : In the internal ear the 'organ of corti'. Which bears hair cells, is located in
Answer» SCALA tympanii Scala MEDIA Scala vestibuli SACCULUS ANSWER :C

Discussion

16445.	Question : In the kingdom Animalia, which of the following is not an invertebrate ?
Answer» PLATYHELMINTHES Rotifera ARTHROPODA AMPHIBIA SOLUTION :Amphibia

Discussion

16446.	Question : In the inflorescence of Musa
Answer» PEDICELLATE FLOWERS are arranged in acropetal manner Sessile flowers are arranged in acropetal manner Sessile flowers are arranged in CENTRIFUGAL manner Sessile flowers are arranged in basipetal manner ANSWER :B

Discussion

16447.	Question : In the inflorescence of Cassia
Answer» the length of pedicels decreases acropetally The flowers are asymmetric with staminodes The flowers open CENTRIFUGALLY with sepals and PETALS overlap one another in a PARTICULAR direction The flowers appear to be in centripetal arrangement with a CENTRAL flower, a product of TERMINAL bud Answer :A

Discussion

16448.	Question :In the host body, HIV undergoes replication in
Answer» Macrophages, T-helper cells BLOOD plasma, RBC Erythrocytes, TISSUE FLUID NERVE cells, blood plasma Answer :A

Discussion

16449.	Question : In the hexaploid wheat, the haploid (n) and basic (x) number chromosomes are
Answer» N = 21 and x = 21 n = 21 and x = 14 n = 21 and x = 7 n = 7 and x = 21 Answer :C

Discussion

16450.	Question :In the graphical representation of pulmonary Volumes and capacities, 'x' denotes
Answer» INSPIRATORY reserye volume Total LUNG capacity Expiratory capacity lnspiratory capacity Solution :

Discussion

Explore topic-wise InterviewSolutions in .

Question : In tropical rain forests, the canopy is thick and shorter plants growing below it, recive filtered light. How are they able to carry out photosynthesis ?

Question : In transpiration/guttation water loss is dilute solution of inorganic and organic substances.

Question : In .......... tracheids, thickening material is deposited in the form of rings.

Question : In Torpedo , electric organs are modified

Question : In thre dimensional view, a transfer RNA molecule appearas

Question : In this type of selection no speciation takes place but the phenotype stability is maintained within the population over generation.

Question : In this type of fossilization, the molecules of the dead body is replaced for molecules by minerals and the original substance being lost through disintegration.

Question : In Theobroma cocoa, the inflorescence arise from ..............

Question : In the young cob of maize, numerous filamentous hair-like structures protruding from its tip are

Question :In the Whittaker five-kingdom system, organisms in the kingdom Protista are .............. or .............. eukaryotes.

Question : In the vascular bundle of leaf, xylem is located towards the adaxial side of the leaf.

Question : In the urinogenital organs of rabbit which one of following part is present in male but not in female ?

Question : In the tissues, the factors favourable for the dissociatio of O_(2) from oxyhaemoglobin are

Question : In __________ the tissues of male and female genotype type form a mosaic.

Question : In the transpiration pull theory, whatcauses the tension that leads to liftingof the water column?

Question : In the tissues, high concentrations of carbon dioxide

Question : In the term 'taxonomy' the Greek word taxis means ________.

Question : In the successive seral stages there is a change in the

Question : In the stomach, gastric acid is secreted by the……….. .

Question : State whether the following statements are true or false.In the sodium-potassium pump, sodium is transported out of the cell and potassium is transported into the cell as ATP is broken by a membrane protein.

Question :In the root nodules of leguminous plants, what is the role off nitrogenase and leghaemoglobin?

Question : In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive

Question : In the resting state of the neural membrane diffusion due to concentration gradients, allowed, would drive

Question : In the resting muscle fibre, tropomysin partially covers

Question : In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed would drive:

Question : In the regions of A-band, the numbers of thick filaments surrounding a thin filament are

Question : In the pyramid for a hypothetical country, the ratio of reproductive females and pre-reproductive females is gt 2. Based on this data, the population size is expected to

Question : In the plant cell, cytokinesis occurs by ………….

Question : In the nucleotide namely adenosine-5'-tri phosphate, the sequence of linkages among N(base), C(sugar) and P(phosphate) is

Question : In the neurilemma, the synaptic vesicles release neurotransmitters into the synaptic ciert by …………………… .

Question :In the months of April and May one can see a yellowsulphur like dust floating in the Himalayan pine forests. What is it due to ?

Question : In the moss life cycle, the sporophyte:

Question : In the members of family Fabaceae, the petals showdescending imbricate aestivation.

Question :In the members of Fabaceae stamens and pistilare enclosed and protected by the following

Question : In the meiotic cell division four daughter cells are produced by two successive divisions in which :

Question : In the mechanism of action of a protein hormone, one of the second messengers is

Question : In the mechanism of action of a protein hormone, one of the second messengers is …………..

Question : In the life cycle of Plasmodium exflagellation occurs in ……………. .

Question : In the life cycle of moss, which of the following generations is dominant ?

Question : In the life cycle of common round worm 2nd and 3rd moults occur in

Question : In the life cycle of ascomycetes and basidomycetes cells are

Question : In the leaves of C_3 plants, peroxisomes are involved in a process celled

Question : In the kingdoms……….. and ........, the cell is a complete organism.

Question : In the internal ear the 'organ of corti'. Which bears hair cells, is located in

Question : In the kingdom Animalia, which of the following is not an invertebrate ?

Question : In the inflorescence of Musa

Question : In the inflorescence of Cassia

Question :In the host body, HIV undergoes replication in

Question : In the hexaploid wheat, the haploid (n) and basic (x) number chromosomes are

Question :In the graphical representation of pulmonary Volumes and capacities, 'x' denotes