22339 + Interview Questions in Biology in Class 11 Page 144 InterviewSolution

7151.	Question : When the margins of sepals or petals overlap one another without any particualr direction, the condition is termed as
Answer» VEXILLARY IMBRICATE Twisted Valvate ANSWER :B

Discussion

7152.	Question : When the membrane potential reaches the spike potential, what happens?
Answer» The potential again goes to the spike potential The potential reaches to the threshold potential The potential FALLS BACK towards the resting potential The potential REMAINS the same Solution :The potential falls back towards the resting potential

Discussion

7153.	Question : When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as
Answer» VEXILLARY IMBRICATE TWISTED Valvate SOLUTION :Imbricate

Discussion

7154.	Question : When the leaflets are joined together at a common point at the petiole, the leaf is
Answer» SIMPLE LEAF pinnately COMPOUND leaf palmately compound leaf a BRANCH

Discussion

7155.	Question : When the intensity of light is low during night the light is detected by
Answer» RODS CONES LENS Both rods and cones ANSWER :C

Discussion

7156.	Question : When the fruit develops from a spike or catkin inflorescence, it is known as
Answer» syconus sorosis caryopsis hesperidium Answer :B

Discussion

7157.	Question : When the frog is in water.............. respiration occurs.
Answer» PULMONARY gill buccal cutaneous ANSWER :A

Discussion

7158.	Question : When the fluid outside a cell has a greater concentration of a given molecule than the fluid inside the cell, the external fluid is …………………………
Answer» SOLUTION :HYPERTONIC

Discussion

7159.	Question : When the filaments of stamens are attached to the perianth, the condition is
Answer» Epiphylious epipetalous adelphous syngenesious Answer :A

Discussion

7160.	Question : When the enzymes with slightly different molecular structure can also perform the identical activities , they are called as ……………
Answer» SOLUTION :ISOENZYMES

Discussion

7161.	Question : When the calyx is coloured and showy, it is called……………..
Answer» PETALOID sepaloid bract spathe Solution :petaloid

Discussion

7162.	Question : When the body encounters with the same pathogen for the second time, the response is
Answer» PRIMARY response with LOW INTENSITY Amnestic response with high intensity Anamnestic response with high intensity SECONDARY response with very low intensity Answer :C

Discussion

7163.	Question : When temperature decrease, oxy-Hb curve becomes
Answer» Moresteep STARIGHT PARABOLA all of THEABOVE ANSWER :A

Discussion

7164.	Question : When temperature decreases, oxy-Hb curve will become
Answer» more steep straight parabola all of these

Discussion

7165.	Question :When pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is reffered to as
Answer» AUTOGAMY geitonogamy xenogamy ALLOGAMY ANSWER :B

Discussion

7166.	Question : When pollen grains are not transferred from rahthers to stigma in a flower, due to the physical barrier, it is called
Answer» CLEISTOGAMY HERKOGAMY DICHOGAMY heterogamy Answer :B

Discussion

7167.	Question : When phloem is present on both sides of the xylem, the vasecular bundle is said to be
Answer» collateral bicollateral radial conjoint Answer :B

Discussion

7168.	Question : When perennial plants bear fruits every year they are called as …………………….
Answer» polycarpie ephemerals ANNUAL therophyte Solution :polycarpie

Discussion

7169.	Question :When ovule is straight with funiculus,embryo sac, chalaza and micropyle lying in a straight vertical line,it is known as
Answer» orthotropous anatropous campylotropous amphitropous ANSWER :A

Discussion

7170.	Question : When number of chromosomes is already reduced to half in the first reductional division of meiosis, where is the necessity of second meiotic division
Answer» The division is required for the formation of four gametes Division ensures equal DISTRIBUTION of haploid chromosomes Division ensures equal distribution of GENES on chromosomes Division is required for SEGREGATION of replicated chromosomes Answer :D

Discussion

7171.	Question : When nerve impulse reaches a neuromuscular junction, is released ...............
Answer» SOLUTION : ACETYLCHOLINE

Discussion

7172.	Question : When many equally strong veins like midrib arise from the petiole towards the margin of the leaf forming a network, the leaf is said to
Answer» RETICULATE PINNATE reticulate PALMATE PARALLEL pinnate parallel palmate

Discussion

7173.	Question : When lactose is present in the culture medium:
Answer» TRANSCRIPTION of LAC y, lac z a genes Repressor is UNABLE to bind to the operator Repressor is ABLE to bind to the operator Both (a) and (b) are correct Answer :D

Discussion

7174.	Question : When lactic acid is formed during fermentation ?
Answer» SOLUTION :(i) During fermentation by LACTIC ACID bacteria. (ii)During heavy exercise in striated muscles in humans.

Discussion

7175.	Question : When is the development of an organism called as Indirect?
Answer» SOLUTION :Have a larval stage MORPHOLOGICALLY DISTINCT from ADULT.

Discussion

7176.	Question : When is interphase seen?
Answer» In the beginning of CELL DIVISION At the end of division in daughter cell Between two divisions A, B, C all THREE Answer :D

Discussion

7177.	Question : When incision in a leaf is more than half way towards the midrib it is called
Answer» Pinnatisect Pinnatipartite Pinnatifid Palmatipartite Answer :B

Discussion

7178.	Question : When heart muscles are suddenly damagedby an inadequate blood supply?
Answer» CARDIAC arrest Cardiac FAILURE Heart attack Heart failure ANSWER :C

Discussion

7179.	Question : When fungi form a sheath around the root in a pine or oak tree what type of mycorrhiza it is?
Answer» SOLUTION :ECTOMYCORRHIZA.

Discussion

7180.	Question : When form of reproduction is correctly matched?
Answer» Euglena transvers BINARY FISSION PARAMECIUM LONGITUDINAL binary fission Amoeba MULTIPLE fission Plasmodium binary fission Answer :C

Discussion

7181.	Question : When fat is in the stomach the secretion of gastrin is inhibited. This inhibition is due to
Answer» PRESENCE of FAT Non-stimulation of vagus Slow DIGESTION of fat RELEASE of enterogastron Answer :C

Discussion

7182.	Question : When ever there is infection, the cells that are activated to phagocytes are
Answer» a. astrocytes b. ependymal cells C. microglial d. OLIGODENDROCYTES ANSWER :C

Discussion

7183.	Question : Whenelectricwavesreach from S . A nodetonodeit slows down in heart.This slwoingdown is essential as ……..
Answer» It gives resttoauricles It makesstrong contractingof rightauricle It helpsventriclein receivingmorebloodfrom AURICLES . Helpsrightauricleto receivebloodfrom VENA CAVA . Answer :C

Discussion

7184.	Question : When does the wildlife week celebrated in India?
Answer» SOLUTION :FIRST WEEK of OCTOBER.

Discussion

7185.	Question : When does the angiosperm appeared on Earth ?
Answer» DEVONIAN CAMBRIAN EARLY CRETACEOUS Precambrian Solution :Early cretaceous

Discussion

7186.	Question : When does meiosis occur in gymnosperms and angiosperms?
Answer» SOLUTION :In gymnosperm : It occurs in MICROSPORANGIUM and megasporangium to produce MICROSPORES and megaspores. In ANGIOSPERM: It occurs in microsporangium of anther and megasporangium of OVULE.

Discussion

7187.	Question : When does rigor mortis begin afterdeath?
Answer» SOLUTION :GENERALLY in about 2-3 HRS after DEATH.

Discussion

7188.	Question : When does glomerular filtration occurs in Bowman's capsule?
Answer» When HYDROSTATIC PRESSURE of blood in the glomerulus is 70 mmHg and NET FILTRATE pressure is - 25 mmHg When hydrostatic pressure of blood in the glomerulus is 70 mmHg and net filtrate pressure is - 35 mmHg When hydrostatic pressure of blood in the glomerulus is 75 mmHg and net filtrate pressure is 25 mmHg When hydrostatic pressure of blood in the glomerulus is 70 mmHg and net filtrate pressure is - 70 mmHg Answer :B

Discussion

7189.	Question : When does anaerobic respiration occur in man and yeast ?
Answer» Solution :(a) Whenanimals do physical EXERCISE at thattime deficit of `O_(2)`is created anaerobic respiration takes palce. Atthis time pyruvicacid gets converted intolactic acid by enzyme lactatedehydrogenate. (b) Anaerobic respiration takes place in yeast in absence of `O_(2)`. Whilepyruvic acid is converted into `CO_(2)`and ethanol is obtained which is done through enzyme pyruvic acid decarboxylase and ALCOHOL dehydrogenase.

Discussion

7190.	Question : When does an essential mineral is considered as a "toxic" ?
Answer» Solution :Increase of MINERAL NUTRIENTS more than the normal concentration causes toxicity. A concentration, at which 10% of the dry weight of tissue is REDUCED, is considered as TOXIC.

Discussion

7191.	Question : When does a prophage enters lytic cycle?
Answer» Solution :On EXPOSURE to UV radiation and CHEMICALS the excision of phage DNA may occurs and results in lytic CYCLE.

Discussion

7192.	Question : When do you call the perforation plate in vessels as simple ?
Answer» SOLUTION :In vessels, due to the dissolution of entire cell WALL, a single pore is formed at the PERFORATION PLATE. Such a perforation is called as SIMPLE perforation plate. Example : Magnifera.

Discussion

7193.	Question : When describing a skeletal muscle, what does ''striated'' mean?
Answer» SOLUTION : Each SKELETAL muscle fibre has a REPEATED series of DARK and light bands. The dark A-bands and light I-bands give a striated appearance to the muscle.

Discussion

7194.	Question : When CO_(2) is added to PEP, the first stable product synthesised is
Answer» pyruvate glyceraldehyde - 3 - phosphate phosphoglycerate oxaloacetate Solution :(Oxalocetic ACID OAA)

Discussion

7195.	Question : When concentration of CO_(2) is less in blood then respiration is …………. . (A) Slow and deep (B) Fast and deep (C) Shallow and slow (D) No effect on respiration
Answer» Slow and deep FAST and deep Shallow and slow No EFFECT on respiration ANSWER :B

Discussion

7196.	Question : When CO_(2) concentration in blood increases, breathing becomes
Answer» SLOW and deep faster and deeper shallower and slow no AFFECT on BREATHING

Discussion

7197.	Question : When breast feeding is replaced by less nutritive food low in proteins and calories the infants below the age of one year are likely to suffer from
Answer» marasmus rickets kwashiorkor pellagra Answer :A

Discussion

7198.	Question : When body part moves towards the median axis is called
Answer» abductor adductor supinator pronator Answer :B

Discussion

7199.	Question :When blood volume drops down abruptly, what happens to the stroke volume? State whether it increases or decreases?
Answer» Solution :Stroke volume SV = EDV - ESV EDV - Amount of BLOOD getting collected in ventricle during diastole. ESV - Volume of blood remaining in ventricle after CONTRACTION. 1. Heart.s pumping action maintains balance between CARDIAC output and venous return, Heart is a double pump. 2. Each side of the heart can fail independently of the other 3. Increase in EDV can increase SV. On the other hand decrease in venous retum and EDV can decrease SV. Similarly changes of EDV and ESV on SV are not independent.

Discussion

7200.	Question : When apical bud is removed, the next axial bud begins to grow out.
Answer» Solution :The auxin SYNTHESIZED in the apical BUD suppresses the growth of the next AXILLARY bud when this apical bud is REMOVED the effect of auxin is also removed and then the axial bud GROWS.

Discussion

Explore topic-wise InterviewSolutions in .

Question : When the margins of sepals or petals overlap one another without any particualr direction, the condition is termed as

Question : When the membrane potential reaches the spike potential, what happens?

Question : When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as

Question : When the leaflets are joined together at a common point at the petiole, the leaf is

Question : When the intensity of light is low during night the light is detected by

Question : When the fruit develops from a spike or catkin inflorescence, it is known as

Question : When the frog is in water.............. respiration occurs.

Question : When the fluid outside a cell has a greater concentration of a given molecule than the fluid inside the cell, the external fluid is …………………………

Question : When the filaments of stamens are attached to the perianth, the condition is

Question : When the enzymes with slightly different molecular structure can also perform the identical activities , they are called as ……………

Question : When the calyx is coloured and showy, it is called……………..

Question : When the body encounters with the same pathogen for the second time, the response is

Question : When temperature decrease, oxy-Hb curve becomes

Question : When temperature decreases, oxy-Hb curve will become

Question :When pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is reffered to as

Question : When pollen grains are not transferred from rahthers to stigma in a flower, due to the physical barrier, it is called

Question : When phloem is present on both sides of the xylem, the vasecular bundle is said to be

Question : When perennial plants bear fruits every year they are called as …………………….

Question :When ovule is straight with funiculus,embryo sac, chalaza and micropyle lying in a straight vertical line,it is known as

Question : When number of chromosomes is already reduced to half in the first reductional division of meiosis, where is the necessity of second meiotic division

Question : When nerve impulse reaches a neuromuscular junction, is released ...............

Question : When many equally strong veins like midrib arise from the petiole towards the margin of the leaf forming a network, the leaf is said to

Question : When lactose is present in the culture medium:

Question : When lactic acid is formed during fermentation ?

Question : When is the development of an organism called as Indirect?

Question : When is interphase seen?

Question : When incision in a leaf is more than half way towards the midrib it is called

Question : When heart muscles are suddenly damagedby an inadequate blood supply?

Question : When fungi form a sheath around the root in a pine or oak tree what type of mycorrhiza it is?

Question : When form of reproduction is correctly matched?

Question : When fat is in the stomach the secretion of gastrin is inhibited. This inhibition is due to

Question : When ever there is infection, the cells that are activated to phagocytes are

Question : Whenelectricwavesreach from S . A nodetonodeit slows down in heart.This slwoingdown is essential as ……..

Question : When does the wildlife week celebrated in India?

Question : When does the angiosperm appeared on Earth ?

Question : When does meiosis occur in gymnosperms and angiosperms?

Question : When does rigor mortis begin afterdeath?

Question : When does glomerular filtration occurs in Bowman's capsule?

Question : When does anaerobic respiration occur in man and yeast ?

Question : When does an essential mineral is considered as a "toxic" ?

Question : When does a prophage enters lytic cycle?

Question : When do you call the perforation plate in vessels as simple ?

Question : When describing a skeletal muscle, what does ''striated'' mean?

Question : When CO_(2) is added to PEP, the first stable product synthesised is

Question : When concentration of CO_(2) is less in blood then respiration is …………. . (A) Slow and deep (B) Fast and deep (C) Shallow and slow (D) No effect on respiration

Question : When CO_(2) concentration in blood increases, breathing becomes

Question : When breast feeding is replaced by less nutritive food low in proteins and calories the infants below the age of one year are likely to suffer from

Question : When body part moves towards the median axis is called

Question :When blood volume drops down abruptly, what happens to the stroke volume? State whether it increases or decreases?

Question : When apical bud is removed, the next axial bud begins to grow out.