22339 + Interview Questions in Biology in Class 11 Page 399 InterviewSolution

19901.	Question :Can there be DNA replication without cell division ?
Answer» SOLUTION : DNA REPLICATION is done for preparation of CELL division. If cell division does not take place then DNA replication does not take place.

Discussion

19902.	Question : Can girdling experiments be done in monocots ? If yes, How ? If no, why not ?
Answer» Solution :No, Ring experimentis not possible in monocotyldons. Because vascular BUNDLES are scattered in STEM of monocotyledons (on all sides of stem). It is FOUND transverse section that no ring can be formed on MONOCOT like dicot.

Discussion

19903.	Question : Can all the four chambers of the human heart experience systole simultaneously ?
Answer» SOLUTION :All the four chambers of the human heart never EXPERIENCE systole simultaneously because it is a cyclic process. During atrial systole, blood enters into right ATRIUM through superior and inferior venae cavae, and coronary sinus while pulmonary veins bring blood to the left atrium from lungs. When atrial systole is completed, the action POTENTIAL passes VIA AV node to ventricles to cause ventricular systole.

Discussion

19904.	Question : Can a chemical reaction take place without enzyme ? Comment .
Answer» Solution :Yes, but SLOWLY. However rate of reaction may not be ABLE to sustain LIFE.

Discussion

19905.	Question :Camplyotropus ovule is commonly seen in
Answer» Helianthus POLYGONUM Tridax Bean ANSWER :4

Discussion

19906.	Question : Campylobacter is a …………….
Answer» OBLIGATE AEROBE obligate ANAEROBE capnophilic aerobe ANSWER :C

Discussion

19907.	Question : Campanion cells are present only in. . . . . . . . . .
Answer» PTERIDOPHYTES Angisperms Gymnosperms Dicots Answer :B

Discussion

19908.	Question : Camilo Golgi (1898):
Answer» SOLUTION :Camilo Golgi first observed densely STAINED reticular structure NEAR the nucleus of nerve cell of owl. These were later named Golgi bodies after him.

Discussion

19909.	Question : Cammon cell wall material in primary wall, secondary wall and middle lamellum is
Answer» Cellulose Suberin Pectin Lignin ANSWER :C

Discussion

19910.	Question : Camouflage of chameleon is associated with ………………… .
Answer» CHROMOPLAST CHROMOSOME CHROMATOPHORE CHROMOMERE SOLUTION :Chromatophore

Discussion

19911.	Question : Camouflage is present in
Answer» HEMIDACTYLUS ICHTHYOPHIS Chamaelon SALAMANDRA ANSWER :C

Discussion

19912.	Question : Cambium of root is an example of ……….meristem
Answer» SOLUTION :SECONDARY

Discussion

19913.	Question : CAM pla nts be long to family by
Answer» Malvaceac Crassulaceae Trapaceae Orchidaceae Solution :CAM PLANTS BELONG to FAMILY crassulaceae.

Discussion

19914.	Question : Calyptrogen gives rise to
Answer» ROOT cap Metaxylem Secondary XYLEM All of these Answer :A

Discussion

19915.	Question : Calyptra around the sporophyte of a bryophyte is derived from
Answer» Columella Antheridium ARCHEGONIUM Capsule Answer :C

Discussion

19916.	Question : Calvin cycle leads to reduction of:
Answer» `CO_(2)` `O_(2)` RUBP RUMP Answer :A

Discussion

19917.	Question : Calotes versicolor is a ………………….. .
Answer» House LIZARD ROCK lizard GARDEN lizard Flying lizard Solution :Garden lizard

Discussion

19918.	Question : Callose plug and p-proteins are associated with
Answer» COMPANION cells Sieve TUBE Phloem PARENCHYMA Trachea Answer :B

Discussion

19919.	Question : Calculate the respiratory quotient from the following equation C_4H_6O_5 + 3O_2 to 4CO_2 3H_2O + "Energy"
Answer» UNITY More than unity Less than unity Zero Answer :B

Discussion

19920.	Question : Calculate the respiratory quotient for the following equation. C_6H_12O_6 to 2CO_2 + 2C_2H_5OH + "Energy"
Answer» SOLUTION :Volume of `O-2` USED = O. Volume of `CO_2` released = 2. `RQ = ("Volume of" CO_2" liberated")/("Volume of "O_2" CONSUMED")` `RQ = 2/0 = prop ("infinity")`

Discussion

19921.	Question : Calcium phosphate in the bone is found as
Answer» Colloids of HYDROXY phosphate Crystals of hydroxyapatite Crystals of CALCIUM carbonate Colloidal SOLUTION Answer :B

Discussion

19922.	Question : Calcium plays a vary important role in the formation of bones. Write on the role of endocrine glands and hormones responsible for maintaining calcium homeostasis.
Answer» SOLUTION :Endocrine glands thyroid and parathyroid maintains homestasis of `Ca^("++")`, related hormone are calcitonin and parathyroid (PTH). (i) Parathyroid gland secete PTH, which maintains balance of `Ca^("++")` and `PO_(4)^(-)` in BLOOD and other tissues. It induces transport of CALCIUM from bones into the blood INCREASES reabsorption of `Ca^("++")` by Kidney and Intestine. (ii) Thyroid gland secrete thyrocalcitonin hormone. It INHIBITS release of `Ca^("++")` from bone and lower calcium level thus it acts against PTH and maintains hormonestasis of `Ca^("++")`.

Discussion

19923.	Question : Calcium is an element that is essential for both plants and animals but not essential for fungi.
Answer» ANSWER :1

Discussion

19924.	Question : Calcium ion concentrationin blood affects muscle contraction .Does it lead to tetany in certain cases ? How will you correlate fluctuationin blood calcium with tetany ?
Answer» Solution :For MUSCLE contraction opening of joining site of THIN filament is essential when `ca^(2+)` ions joins along with other regulatory protein troponim form troponincomplex . It REGULATES position of tropomyosin on thin filament union of `Ca^(2a)` re-arrangestropomysin-troponin complex , opening myosin linkge site on thin filament when `Ca^(2+)` is in cytosole , thin and thick filament SLIDE over each other , result in muscle contraction . When `Ca^(2+)` level decreases linkage surface coveredcontraction completed . In tetany `Ca^(2+)`level decrease in body fluid - due to inactiveness of parathyroid gland . This gland secrete parathormonehormone which regulates ca level in BLOOD . ,br> In tetany muscles are contracted /spasm and giddiness.

Discussion

19925.	Question : Calcified cartilage makes
Answer» PUBIS of pevic girdle of MAMMAL SUPRA scapula of pectral girdle of MAN pubis of pelvic girdle of frog Sternum of frog Answer :C

Discussion

19926.	Question : Caecum and vermiform appendix are the important site for.................. digestion in herbivores .
Answer» SOLUTION :N/A

Discussion

19927.	Question : Caecum :
Answer» Solution :Location : 6 to 8 BLIND TUBULES located at the JUNCTION of foregut and midgut in cockroach is called Hepatic caecum. Function : Which secrete digestive juice and help in DIGESTION of food.

Discussion

19928.	Question : Cadherins and integrins are
Answer» Intercellular TRANSMEMBRANE glycoproteins Rivet-like adhesions INTERMEDIATE FILAMENTS Answer :C

Discussion

19929.	Question : CAD is often referred to as .......... heart failune.
Answer» ANSWER :ATHEROSCLEROSIS

Discussion

19930.	Question :Ca metabolism is regulated by
Answer» ACTH Thyroxine Parathormone Epinephrine SOLUTION :ACTH

Discussion

19931.	Question : Ca^(2+) level in body is controleed by
Answer» THYROID gland parathyroid gland ADRENAL gland both a and b Solution :`Ca^(2+)` level in the body is controlled by both thyroid gland and pararthyroid gland. Thyroid gland secretes a hormone. THYROCALCITONIN which checks the excess BLOOD calcium levels. Parathyroid gland secretes hormone calle dprathyroid hormone or parathormone which INCREASE the `Ca^(2+)` levels in the blood.

Discussion

19932.	Question : Ca^(+) Metabolism is regulated by .............. .
Answer» ACTH Thyroxin Parathormone Epinephrine Answer :A

Discussion

19933.	Question : C_(6) H_(12) O_(6) :
Answer» ANSWER :GLUCOSE

Discussion

19934.	Question : C_(4) plants show response to low / high light intensity as they lack photorespiration.
Answer» ANSWER :HIGH

Discussion

19935.	Question : C_4 plants show Kranz anatomy.
Answer» SOLUTION :The chloroplasts of bundle sheath cells LACK grana and chloroplasts in mesophyll cells SHOW normal chloroplasts in `C_4` plants.

Discussion

19936.	Question : C_(4) plants respond to ………. Temperatuere and show higher rate of photosynthesis.
Answer» ANSWER :HIGHER

Discussion

19937.	Question : C_(4) plants havea mechanism which ……… concentration of CO_(2) at enzyme site.
Answer» ANSWER :INCREASES

Discussion

19938.	Question : C_4 plants have a specialised type of anatomy in leaves called Kranz type.
Answer» ANSWER :1

Discussion

19939.	Question : C_(4) plantsare ofecologicalbenefit - Commnet.
Answer» SOLUTION :`C_(4)` plantsaccountfor about30% of terrestrialcarbonfixation . INCREASING the proportionof`C_(4)`plants o on earth could assistbiosequestrationof `CO_(2)`andrepresentan importantclimatechange avoidancestrategy .

Discussion

19940.	Question : C_(4) plants are more efficient in photosynthesis than C_(3) plants due to
Answer» presence of thin cuticle lower RATE of photorespiration higher leaf area presence of larger NUMBER of chloroplast in the leaf CELLS. Solution :presence of larger number of chloroplast in the leaf cells.

Discussion

19941.	Question : C_(4) plant saturation for CO_(2) : 360 mu//L^(-1) : : C_(3) : …….
Answer» ANSWER :`450 ML L^(-1)`

Discussion

19942.	Question : C_(4)patlıway occurs
Answer» only in monocots in monocots in niost of the dicots in few dicots Answer :B

Discussion

19943.	Question : C_(3) : PGA : : C_(4) : ………
Answer» ANSWER :OA A

Discussion

19944.	Question : C_(2) H_(5) OH :
Answer» ANSWER :ETHANOL

Discussion

19945.	Question : C_(2)cyclerefers to ………. .
Answer» CAM CYCLE PCO cycle PCRcycle DCA cycle Answer :B

Discussion

19946.	Question :Nitrogen as a nutrient element is highly immobile in plants.following statements are true? If false correct them:
Answer» SOLUTION :(C) False, NITROGEN is a MOBILE element.

Discussion

19947.	Question : Byophytes differ from pteridophytes in not having
Answer» Archegonia Defined sporophyte Vascular STRANDS (STELES) MULTICELLULAR embryo Answer :C

Discussion

19948.	Question : By which process, the fatty acid changesx into acetyl Co-A.
Answer» SOLUTION :`BETA` - OXIDATION.

Discussion

19949.	Question : By which process fructose is absorbed by mucous cells of intestinal tract ?
Answer» SIMPLE diffusion Active transport Facilitated diffusion Cotransport Answer :A

Discussion

19950.	Question : By which mechanism, oxygen is released out from lungs to cells
Answer» DIFFUSION FACILITATED diffusion TRANSPIRATION OSMOSIS ANSWER :A

Discussion

Explore topic-wise InterviewSolutions in .

Question :Can there be DNA replication without cell division ?

Question : Can girdling experiments be done in monocots ? If yes, How ? If no, why not ?

Question : Can all the four chambers of the human heart experience systole simultaneously ?

Question : Can a chemical reaction take place without enzyme ? Comment .

Question :Camplyotropus ovule is commonly seen in

Question : Campylobacter is a …………….

Question : Campanion cells are present only in. . . . . . . . . .

Question : Camilo Golgi (1898):

Question : Cammon cell wall material in primary wall, secondary wall and middle lamellum is

Question : Camouflage of chameleon is associated with ………………… .

Question : Camouflage is present in

Question : Cambium of root is an example of ……….meristem

Question : CAM pla nts be long to family by

Question : Calyptrogen gives rise to

Question : Calyptra around the sporophyte of a bryophyte is derived from

Question : Calvin cycle leads to reduction of:

Question : Calotes versicolor is a ………………….. .

Question : Callose plug and p-proteins are associated with

Question : Calculate the respiratory quotient from the following equation C_4H_6O_5 + 3O_2 to 4CO_2 3H_2O + "Energy"

Question : Calculate the respiratory quotient for the following equation. C_6H_12O_6 to 2CO_2 + 2C_2H_5OH + "Energy"

Question : Calcium phosphate in the bone is found as

Question : Calcium plays a vary important role in the formation of bones. Write on the role of endocrine glands and hormones responsible for maintaining calcium homeostasis.

Question : Calcium is an element that is essential for both plants and animals but not essential for fungi.

Question : Calcium ion concentrationin blood affects muscle contraction .Does it lead to tetany in certain cases ? How will you correlate fluctuationin blood calcium with tetany ?

Question : Calcified cartilage makes

Question : Caecum and vermiform appendix are the important site for.................. digestion in herbivores .

Question : Caecum :

Question : Cadherins and integrins are

Question : CAD is often referred to as .......... heart failune.

Question :Ca metabolism is regulated by

Question : Ca^(2+) level in body is controleed by

Question : Ca^(+) Metabolism is regulated by .............. .

Question : C_(6) H_(12) O_(6) :

Question : C_(4) plants show response to low / high light intensity as they lack photorespiration.

Question : C_4 plants show Kranz anatomy.

Question : C_(4) plants respond to ………. Temperatuere and show higher rate of photosynthesis.

Question : C_(4) plants havea mechanism which ……… concentration of CO_(2) at enzyme site.

Question : C_4 plants have a specialised type of anatomy in leaves called Kranz type.

Question : C_(4) plantsare ofecologicalbenefit - Commnet.

Question : C_(4) plants are more efficient in photosynthesis than C_(3) plants due to

Question : C_(4) plant saturation for CO_(2) : 360 mu//L^(-1) : : C_(3) : …….

Question : C_(4)patlıway occurs

Question : C_(3) : PGA : : C_(4) : ………

Question : C_(2) H_(5) OH :

Question : C_(2)cyclerefers to ………. .

Question :Nitrogen as a nutrient element is highly immobile in plants.following statements are true? If false correct them:

Question : Byophytes differ from pteridophytes in not having

Question : By which process, the fatty acid changesx into acetyl Co-A.

Question : By which process fructose is absorbed by mucous cells of intestinal tract ?

Question : By which mechanism, oxygen is released out from lungs to cells