22339 + Interview Questions in Biology in Class 11 Page 198 InterviewSolution

9851.	Question : The regulation of the flow of material into and outside thecell depends on:
Answer» CELL membrane mechanism of OSMOSIS CHEMICAL composition of plasma membrane plasma membrane's permeability Solution :plasma membrane.s permeability

Discussion

9852.	Question : The region where the image is sharpest is known as
Answer» BLIND spot rod region retina fovea

Discussion

9853.	Question :The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the (a) Fovea (b) Iris (C) Blind spot (d) Optic chiasmata
Answer» SOLUTION :(C) BLIND SPOT

Discussion

9854.	Question : The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the
Answer» fovea iris blind spot optic CHIASMA

Discussion

9855.	Question : The region of the vertebrate eye, where the nerve passes out of the retina is called the
Answer» fovea iris blind spot optic CHIASMA ANSWER :A

Discussion

9856.	Question : The region of the chromosome with which they attach themselves to spindle during cell division is known as……………………………
Answer» SOLUTION :CENTROMERE

Discussion

9857.	Question : The region between two successive Z-discs is called a
Answer» SARCOMERE microtubule myoglobin actin Solution :sarcomere

Discussion

9858.	Question : The reflex pathway comprises atleast 2 afferent neurons.
Answer» ANSWER :FALSE

Discussion

9859.	Question : The reflex action is effected by
Answer» brain medulla oblongata effector organs SPINAL CORD Solution :spinal cord

Discussion

9860.	Question : The refractive index of protoplasmm is___
Answer» 1.4 2.4 3.4 0.4 Solution :1.4

Discussion

9861.	Question : The red colour of the RBC is due to the presence of a respiratory pigment
Answer» HAEMOERYTHRIN HAEMOGLOBIN HAEMOCYANIN Chlorocronin SOLUTION :Haemoglobin

Discussion

9862.	Question : The red colour of Rhodophyta is due to the preponderance of
Answer» Phycobilins Phycocyanin PHYCOERYTHRIN Xamthophyll Solution :The red colour of RHODOPHYTES is due to the PREPONDERANCE of phycoerythrin.

Discussion

9863.	Question : The receptors of taste and smell are called .
Answer» SOLUTION :CHEMORECEPTORS

Discussion

9864.	Question : The receptor chordotonal is found on the .............. which respond to air or earth bome vibrations
Answer» SOLUTION :ANAL CERCI

Discussion

9865.	Question : The recentmodel for plasma membrane proposed by Singer and Nicolson is
Answer» MOLECULAR LIPID MODEL Lamellar model UNIT membrane model Fluid mosaic model Answer :D

Discussion

9866.	Question : The reaction which is not light dependent
Answer» LIGHT Dark Both (A) and (B) NONE of these Answer :B

Discussion

9867.	Question : The reaction that is responsible for the primary fixation of CO_(2) is catalysed by
Answer» RUBP CARBOXYLASE PEP carboxylase RuBP carboxylase and PEP carboxylase PGA synthase Solution :RuBP carboxylase in `C_(3)` PLANTS and PEP carboxylase in `C_(4)` plants.

Discussion

9868.	Question : The reabsorption of water in the kidney is under the control of
Answer» LH ADH STH ACTH

Discussion

9869.	Question : RBCs are formedin the________.
Answer» SOLUTION : BONE MARROW

Discussion

9870.	Question : The raw material for decomposition, the detritus includes
Answer» DEAD PLANT REMAINS Dead remains of animals Faecal MATTER All the above Answer :D

Discussion

9871.	Question : The ratio of the number of ketonic groups in cytosine, thymine and uracil is
Answer» `1:2:2` `2:1:2` `2:2:1` `1:1:1` ANSWER :A

Discussion

9872.	Question : The ratio of red blood cells to blood plasma is expressed is ..............
Answer» SOLUTION :Haemotocrit.

Discussion

9873.	Question : The ratio of phosphates, sugars and nitrogen bases in ds-DNA
Answer» `1:2:1` `1:1:1` `1:1:2` `3:1:1` ANSWER :B

Discussion

9874.	Question : The ratio of H_1 and H_3 proteins in chromatin is
Answer» `1 : 2` `2 :1 ` `1 : 1` `1 :4` ANSWER :A

Discussion

9875.	Question : The ratio of centromeres, kinetochores, DNA molecules in a metaphase chromosome
Answer» `1 : 2: 2` `1 : 2 : 1` `2 : 2 : 2` `1 : 1 : 2` ANSWER :A

Discussion

9876.	Question : The ratio number of chromatids at prophase, metaphase and anaphase of stem cell of onion
Answer» ` 16:32:32` ` 32:16:32` ` 2:2:1` ` 1:2:1` ANSWER :C

Discussion

9877.	Question : The ratio between the number of chromatids that move to each pole during Anaphase-I in a pollen mother cell and the number of chromosomes that move to each pole during Anaphase in a meristematic cell of same plant is
Answer» ` 1:2` ` 2:1` `1:1` `1:4` ANSWER :C

Discussion

9878.	Question : The ratio between the number of chromatids and anaphasic chromosomes in a mitocyte is
Answer» ` 1:2` ` 1:1` ` 2:1` ` 1:4` ANSWER :B

Discussion

9879.	Question : The ratio between megasporophylls of a female flower and microsporophylls of a male flower of Euphorbia respectively is
Answer» 1:1 ` 1:` 3:1 `:1` ANSWER :C

Discussion

9880.	Question : The ratio between Histone .2. and Histone 1 associated with eukaryotic DNA, respectively?
Answer» `2:1` 1: 2` `1: 4` `4:1 ` ANSWER :D

Discussion

9881.	Question : The rate of transpirator in plants is more when
Answer» ATMOSPHERE is dry TEMPERATURE is high atmosphere is HUMID atrrosphere is DIY and temperature is high Answer :D

Discussion

9882.	Question : The rate of transpiration of a plantwould gradually increase if
Answer» the relative humidity increases the relative humidity decreases the relative humidity REMAIN unchanged the water POTENTIAL gradient remain unchanged

Discussion

9883.	Question : The rateof respiration is slowin plants.
Answer» SOLUTION :Plants do not have SPECIAL respiratoryorgans for exchange of gases unlike animals .Buttype havestomata and lenticles in them. Each part ofthe plant takes care of its requirementof exchange of gases. The transport of gases from one part of the plant to another is very less. Moreover there isnot much need of exchange of gases in plants. So COMPARED to animals rate of RESPIRATION is slow in plants.

Discussion

9884.	Question : The rate of production of organic matter of an ecosystem during photosynthesis is
Answer» NET PRIMARY PRODUCTIVITY GROSS primary productivity Primary productivity Secondary productivity Answer :B

Discussion

9885.	Question : The rate of metabolism, food reserves and type of respiration respectively in frog during adverse climatic conditions are
Answer» FAST, glucose and fat and buccopharyngeal fast, glycogen and protein, pulmoary slow, glycogen and lipids and CUTANEOUS slow, glucose and protein, cutaneous ANSWER :C

Discussion

9886.	Question : The rate of decompostion is controlled by
Answer» CHEMICAL COMPOSITION of detritus Climatic factors Both (1) and (2) None Answer :C

Discussion

9887.	Question : The rate of conversion of light energy into chemical energy of organic molecules in an ecosystem is
Answer» NET PRIMARY productivity gross primary productivity SECONDARY productivity gross secondary productivity Answer :B

Discussion

9888.	Question : The radioactive spots ofchromatogram can be located by ………….
Answer» SOLUTION :RADIO AUTOGRAPHY,

Discussion

9889.	Question : The radio labelled carbon in carbon dioxide supplied to potato plants in an experiment was seen in the tuber eventually. Trace the movement of the labelled carbon dioxide.
Answer» Solution :When potato plant was SYNTHESIZING in PRESENCE of light, carbon liable `C^14` was given in it. So `C_14O_2` was FIXED and radio ACTIVE photosynthetic product was formed, e.g. Glucose - `C_6^(14)H_12O_6` This radio active Glucose is converted into sucrose which is again becomes radio active. Due to `C_14`, which has derived from sugar from first. This sucrose then is transported to various parts of the plant by phloem tissue. Radio active carbon can be found in sugar by auto radiography method moreover elements are transported in plants. e.g. sieve tube (from phloem tissue to various parts of the plant TOWARDS sink).

Discussion

9890.	Question : The radially symmetrical, diploblastic animals belong to phylum(a) porifera(b) coelenterata(c) platyhelminthes(d) echinodermata
Answer» porifera coelenterata platyhelminthes echinodermata

Discussion

9891.	Question : The Quiescent centre in root meristem serves as a
Answer» SITE for storage of food, which is utilized during MATURATION reservoir of growth hormones RESERVE for REPLENISHMENT of damaged cells of the meristem region for absorption of water ANSWER :A::C::D

Discussion

9892.	Question : The Queen bee produces ............... to attract drones.
Answer» SOLUTION :PHEROMONE

Discussion

9893.	Question : The quantum yield for reduction of one CO_(2) molecule is ______
Answer» 0.14 0.1 0.12 0.08 Solution :0.12

Discussion

9894.	Question : The purple sulphur bacteria use hydrogen sulphide and release sulphur but not oxygen. Which of the following agrees with above observation
Answer» The `H_(2)` that resuces `CO_(2)` comes from `H_(2)S` that liberates sulphur Photosynthesis does not require chlorophyll Photosynthesis consist of a light and a dark reaction The `H_(2)` which reduces `CO_(2)` in photosynthesis comes from `H_(2)O` that RELEASES `O_(2)` SOLUTION :`6CO_(2)+12H_(2)S OVERSET("Light")(rarr) C_(6)H_(12)O_(6)+12S+6H_(2)O+` energy. Here `H_(2)S` is utilized as a SOURCE of hydrogen, which reduces `CO_(2)` into glucose. Oxygen is not liberated in bacterial photosynthesis.

Discussion

9895.	Question : The purpose of using enzyme in the ELISA test is
Answer» to show the coloured product to show the ANTIGEN - ANTIBODY reaction to show the immobilised antigen to show the IMMOBILIZED antigen Answer :C::D

Discussion

9896.	Question : The purplish pigment of rod cells
Answer» Scotopsin RHODOPSIN lodopsin RETINAL ANSWER :A

Discussion

9897.	Question : The proximal thick walled part of truncus arteriosus of frog is
Answer» PYLANGIUM SYNANGIUM gynangium gynatrium ANSWER :A

Discussion

9898.	Question : The prouduct of aerobicglycolysis in skeletal muscle and anaerobic fermentation in yeast are respectively . . . . and . . . .
Answer» Solution :In striated muscles, pyruvic acid is obtained at the ENDOF aerobicglycolysisand in YEAST ethanol and `CO_(2)`are obtained at THEEND of fermentation.

Discussion

9899.	Question : The proteins that from large pores in the outer membranes of the plastids, mitochondria etc are
Answer» Porins Aquaporins Symporins Both A and B Answer :A

Discussion

9900.	Question : The protonema of moss which is not formed from spore is called
Answer» Prothallus Leafy stage `1^(@)` PROTONEMA `2^(@)` protonema Solution :The protonema of moss which is not formed from spore is CALLED `2^(@)` protonema (it is formed from `1^(@)` protonema)

Discussion

Explore topic-wise InterviewSolutions in .

Question : The regulation of the flow of material into and outside thecell depends on:

Question : The region where the image is sharpest is known as

Question :The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the (a) Fovea (b) Iris (C) Blind spot (d) Optic chiasmata

Question : The region of the vertebrate eye, where the optic nerve passes out of the retina, is called the

Question : The region of the vertebrate eye, where the nerve passes out of the retina is called the

Question : The region of the chromosome with which they attach themselves to spindle during cell division is known as……………………………

Question : The region between two successive Z-discs is called a

Question : The reflex pathway comprises atleast 2 afferent neurons.

Question : The reflex action is effected by

Question : The refractive index of protoplasmm is___

Question : The red colour of the RBC is due to the presence of a respiratory pigment

Question : The red colour of Rhodophyta is due to the preponderance of

Question : The receptors of taste and smell are called .

Question : The receptor chordotonal is found on the .............. which respond to air or earth bome vibrations

Question : The recentmodel for plasma membrane proposed by Singer and Nicolson is

Question : The reaction which is not light dependent

Question : The reaction that is responsible for the primary fixation of CO_(2) is catalysed by

Question : The reabsorption of water in the kidney is under the control of

Question : RBCs are formedin the________.

Question : The raw material for decomposition, the detritus includes

Question : The ratio of the number of ketonic groups in cytosine, thymine and uracil is

Question : The ratio of red blood cells to blood plasma is expressed is ..............

Question : The ratio of phosphates, sugars and nitrogen bases in ds-DNA

Question : The ratio of H_1 and H_3 proteins in chromatin is

Question : The ratio of centromeres, kinetochores, DNA molecules in a metaphase chromosome

Question : The ratio number of chromatids at prophase, metaphase and anaphase of stem cell of onion

Question : The ratio between the number of chromatids that move to each pole during Anaphase-I in a pollen mother cell and the number of chromosomes that move to each pole during Anaphase in a meristematic cell of same plant is

Question : The ratio between the number of chromatids and anaphasic chromosomes in a mitocyte is

Question : The ratio between megasporophylls of a female flower and microsporophylls of a male flower of Euphorbia respectively is

Question : The ratio between Histone .2. and Histone 1 associated with eukaryotic DNA, respectively?

Question : The rate of transpirator in plants is more when

Question : The rate of transpiration of a plantwould gradually increase if

Question : The rateof respiration is slowin plants.

Question : The rate of production of organic matter of an ecosystem during photosynthesis is

Question : The rate of metabolism, food reserves and type of respiration respectively in frog during adverse climatic conditions are

Question : The rate of decompostion is controlled by

Question : The rate of conversion of light energy into chemical energy of organic molecules in an ecosystem is

Question : The radioactive spots ofchromatogram can be located by ………….

Question : The radio labelled carbon in carbon dioxide supplied to potato plants in an experiment was seen in the tuber eventually. Trace the movement of the labelled carbon dioxide.

Question : The radially symmetrical, diploblastic animals belong to phylum(a) porifera(b) coelenterata(c) platyhelminthes(d) echinodermata

Question : The Quiescent centre in root meristem serves as a

Question : The Queen bee produces ............... to attract drones.

Question : The quantum yield for reduction of one CO_(2) molecule is ______

Question : The purple sulphur bacteria use hydrogen sulphide and release sulphur but not oxygen. Which of the following agrees with above observation

Question : The purpose of using enzyme in the ELISA test is

Question : The purplish pigment of rod cells

Question : The proximal thick walled part of truncus arteriosus of frog is

Question : The prouduct of aerobicglycolysis in skeletal muscle and anaerobic fermentation in yeast are respectively . . . . and . . . .

Question : The proteins that from large pores in the outer membranes of the plastids, mitochondria etc are

Question : The protonema of moss which is not formed from spore is called