24277 + Interview Questions in Biology in Class 12 Page 395 InterviewSolution

19701.	Question : Choose odd one w.r.tflowering and fruiting pattern
Answer» Rice, WHEAT MARIGOLD, Maize PEA, Rice Mango, Apple ANSWER :D

Discussion

19702.	Question : Choose odd one out w.r.t. origin
Answer» Interfascicular CAMBIUM INTERCALARY MERISTEM Apical meristem Intrafascicular cambium ANSWER :A

Discussion

19703.	Question : Choose incorrect statement w.r.t mesophyll cells ofC_4-plants
Answer» Lack of RUBISCO enzyme `C_4`-acid is broken down to release `CO_2` amd a 3-carbon molecule Primary `CO_2` ACCEPTOR molecule is PEP Have a PEP CASE enzyme Answer :B

Discussion

19704.	Question : Choose incorrect statement w.r.t. Rhizophora.
Answer» SHOWS precocious SEED germination Develop respiratory roots Grow in SALINE MARSHY habitat Show seed dormancy Answer :D

Discussion

19705.	Question : Choose incorrect statement:-
Answer» SCP is ONE of the alternate SOURCES of proteins for ANIMALS and human nutrition. Microbes because of their high rate of biomass production and growth can produces \\ LARGE amounts of protein. Spirulina can sense as food RICH in protein but not in minerals, fats, carbohydrate and vitamins. Microbial growth on starch, straw, molasses, sewagealso reduces environmental pollution. Answer :C

Discussion

19706.	Question : Choose incorrect option w.r.t fungi producing endogenous asexual and sexual respectively.
Answer» MUCOR, Truffles Rhizopus, Morels Smut FUNGI, Puffballs Rhizopus,Truffles Answer :C

Discussion

19707.	Question : choose incorrect option w.r.t shoot apex
Answer» TERMINAL position produces NODES and internodes primary meristem differentiated into fourhistogens ANSWER :D

Discussion

19708.	Question : Choose incorrect option w.r.t. Ethephon.
Answer» It is an AQUEOUS solution It is used as source of ethylene It is used to hasten FRUIT ripening in tomatoes and apples It is a natural ripening compound Answer :D

Discussion

19709.	Question : Chooseincorrect option w.r.t chloroplast
Answer» Has ENZYMES for CARBOHYDRATE synthesis Stroma-Light reaction Has enzymes for PROTEIN synthesis Thylakoid-Possess photosystem Answer :B

Discussion

19710.	Question : Choose correct statements writ. phytochromes. A. They absorbs both far-red and red lights B. The P_r form is physiologically active and is present in cytosol C. The P_(fr) form is physiologically active and is attached to plasma membrane D. For LDP P_(fr)/P_r > 1
Answer» A, B and C are correct A, C and D are correct A, B and D are correct B and D are correct Answer :B

Discussion

19711.	Question : Choose incorrect match amongst restriction enzymes listed in column l and type of ends produced in column ll
Answer» COLUMN I - ECOR I and Column II - Sticky end Column I - HIND III and Column II - Sticky end Column I - Sma I and Column II - Blunt end Column I - Bam HI and Column II - Flush end Answer :D

Discussion

19712.	Question : choose e correct option w.r.t. leg- haemoglobin
Answer» FOUND in ROOT nodules of grasses Oxygen scavenger Provides suitable conditions for nitrogenase ACTIVITY Both (2) and (3) ANSWER :D

Discussion

19713.	Question :Choose correct sequence of mechanism of visioni. The light rays in visible wavelength focussed on the retina through the cornea and lens.ii. Light induces dissociation of the retina from opsin resulting in changes in the structure of the opsin iii. This causes membrane permeability changes iv. Potential differences are generated in the photoceceptor cells rods and cones v. This produces a signal that generates action potentials in the ganglion cells through the bipolar cells.vi. These action potentials (impulses) are transmitted by the optic nerves to the visual cortex area of the brainvii. Where the neural impulses are analysed and the image formed on the retina is recognised based on earlier memory and experience
Answer» i, II, III, iv, v, VI and VII i, v, iii, iv, ii, vi and vii iv, v, i, ii, ii, vi and vii iv, i, iii, v. ii, vi and vii Answer :A

Discussion

19714.	Question : choose correct sequence of taxonomic categories in decreasing order
Answer» phylum-class-order-family-genus Kingdom-division-class-family-order division-class-family-order-genus Kingdom-phylum-order-species-genus ANSWER :A

Discussion

19715.	Question : Choose correct statement about anatomical arrangement of lungs.
Answer» They are SURROUNDED by AXIAL SKELETAL and APPENDICULAR skeletal bones They are surrounded by appendicular skeleton only They are surrounded by axial skeleton only They are surrounded by axial skeleton and diaphragm Answer :D

Discussion

19716.	Question : Choose correct option of development of animal kingdom.
Answer» PROTISTA `to` Multicell TISSUE `to` MULTICELLULAR `to` INVERTEBRATE. Protista `to` Multicellular`to` Invertebrate `to` VERTEBRATE. Protista `to` Invertebrate `to` Multicell tissue `to` Multicellular Protista `to` Multicell tissue `to` Invertebrate `to` Multicellular Solution :Protista `to` Multicellular`to` Invertebrate `to` Vertebrate.

Discussion

19717.	Question : choose correct pairs of PGRs showing antagonistic effects.(A) ABA and GAs for seed germination(B) ABA and GAs for stomatal closure (C) Auxin and cytokinin for apical dominance
Answer» (A), (C) and (D) (B), (C) and (D) (C) and (D) only (B) and (D) only Answer :A

Discussion

19718.	Question : Choose correct option for reaction chamber of Urey and Millers experiment.
Answer» AMMONIA METHANE HYDROGEN All of above SOLUTION :All of above

Discussion

19719.	Question : Choose correct one w.r.t. respiratory climactic.
Answer» Sudden SHARP rise in RATE of RESPIRATION Induced by cytokinins Occur at the TIME of flowering Decrease in rate of respiration in dormant seeds Answer :A

Discussion

19720.	Question : Choose any three microbes, from the following which are suited for organic farming which is in great demand these days for various reasons. Mention one application of each one chosen. Mycorrhiza, Monascus, Anabaena, Rhizobium, Methanobacterium, Trichoderma
Answer» Solution :MYCORRHIZA: It is the symbiotic association of fungi with PLANTS. The fungus absorbs phosphorus from the soil and HELPS plant growth. Mycorrhiza also help in resistance to ROOT borne PATHOGENS and tolerance to drought and salinity. Rhizobium.-It also plays a role in Nitrogen fixation and found in the roots of leguminous plants. (iii) Anabaena - Fix atmospheric nitrogen and increase nitrogen content of soil.

Discussion

19721.	Question : Choose correct combination of labelling in aquatic zones:
Answer» a- LIMNETIC ZONE, b-profundal zone, C-littoral zone, d-benthic zone a-limnetic zone, b-benthic zone, c-profundal zone ,d-littoral zone a-littoral zone, b-limnetic zone, c.profundal zone, d-benthic zone a-littoral zone, b-profundal zone, C-benthic zone, d-limnetic zone ANSWER :C

Discussion

19722.	Question : Chondrocytes produce _____.
Answer» ANSWER :Chondrin

Discussion

19723.	Question : Cholesterol is a
Answer» Phospholipid Wax Steroid Triglyceride Answer :C

Discussion

19724.	Question : Cholera leads to dehydration. Why?
Answer» Solution :Vibrio cholerae, a PATHOGEN of cholera produces PROTEIN ENTEROTOXIN which induces excessive SECRETION of an isotonic electrolyte solution by the intestinal mucosa. This solution is lost in STOOL, leading to dehydration.

Discussion

19725.	Question : Cholera is caused by :
Answer» Protozoans Fungus Virus Bactrium Answer :D

Discussion

19726.	Question : Chlorosis is the loss of chlorophyll leading to yellowing in leaves. This symptom is caused by the deficiency of elements like :-
Answer» S, FE, CA, Cu Mn, Mo, B, Cl Fe, Mg, Mo, N Ca, Mg, Cu Answer :C

Discussion

19727.	Question : Chloroplastswithoutgrana are known to occur:
Answer» BUNDLE SHEATH CELLS of `c_3` plants Mesophyll cells of `C_4` plants Bundle sheath cells of `c_4` plants Mespohyll cells of all plants Answer :C

Discussion

19728.	Question : Chloroplast of Chlamydomonas is
Answer» stellate cup-shaped collar-shaped spiral Solution :(b) In Chlamydomonas,chloroplast is single and cup-shaped.Chloroplasts are the pigment (chl-a and chl-b) containing bodies present in GREEN algae.Thegreen colouration of the members of chlorophyta is due to he presence of EXCESS of chlorophyll in the chloroplasts.The chloroplasts are well defined bodies met WITHIN every CELL of the members of this class, though number and SHAPE of tthe chloroplasts variesin different orders of the class.

Discussion

19729.	Question :Chloroplast dimorphism is a characteristic feature of:
Answer» PLANTS with CALVIN CYCLE `C_4` plants ALL plants Only In algae Answer :B

Discussion

19730.	Question : Chloroplast are located at the ______ with their broad surfaces_____ to the cell wall of the mesophyll cells.
Answer» OUTER MARGINS, at RIGHT angle inner margins, parallel outer margins, parallel inner margins, at right angle Answer :C

Discussion

19731.	Question : Chlorophyllousbundle sheath cells occurs in
Answer» monocot STEM monocot LEAVES dicot leaves None of these ANSWER :B

Discussion

19732.	Question : Chlorophyll is a large molecule composed of
Answer» FIVE 4-membered rings four 4-membered rings four 5-membered rings five 5-membered rings Answer :C

Discussion

19733.	Question :Chlorophyll ' C" differ from Chlorophyll 'a' and ' b ' in
Answer» ABSENCE of Mg Ability to DISSOLVED in WATER Absence of phytol tail Absence of porphyring structure Answer :C

Discussion

19734.	Question : Chlorophyll b. chlorophyll d and cholorophyll c aremajor pigments in________. _______.and _________.respectively
Answer» CHLOROPHYCEAE, PHAEOPHYCEAE and RHODOPHYCEAE Phaeophyceae, rhodophyceae and chlorophyceae Rhodophyceae, phaeophyceae and chlorophyceae Chlorophyceae, rhodophyceae and phaeophyceae Answer :D

Discussion

19735.	Question : Chlorophyll appears _____ When flouresed and carotene appears ____ (colour)
Answer» ORANGE , BLUE RED GREEN Green , orange Blue , red Answer :B

Discussion

19736.	Question : Chlorophyll-a molecule cannot remain in ionized state for more than ……… seconds.
Answer» `10^(-5)` `10^(-4)` `10^(-9)` `10^(-8)` ANSWER :C

Discussion

19737.	Question : Chlorophyll absorbs:
Answer» RED LIGHT only Blue light only Green light only Blue as WELL as red light Answer :D

Discussion

19738.	Question : Chlorophyll-a and Chlorophyll-b.
Answer» SOLUTION :

Discussion

19739.	Question : Chlorofluorocarbons (CFCs) are widely used as refrigerants. Then why it is suggested to reduce its emission as far as possible ? Explain.
Answer» Solution :There is a delicate balance between production and degradation of ozone in the stratosphesre. The balance has been disrupted due to enhancement of ozone degradation by chlorofluorocarbons (CFCs). CFCs find wide use as refrigerants. CFCs DISCHARGED in the lower part of atmosphere move upward and reach stratosphere. In stratosphere, UV RAYS act on them releasing CL ATOMS. Cl degrades ozone releasing molecular oxygen, with these atoms acting nearly as catalysts, Cl atoms are not CONSUMED in the reaction. Hence, whatever CFCs are added to the stratosphere, they have permanent and continuing affects on Ozone Levels.

Discussion

19740.	Question : chlorinatedhydroccarbonsenters throughone trophiclevel and its concentrationis increasedas PPMinsuccessivetrophic levels, its nature is
Answer» BIODEGRADABLE NON biodegradable DEGRADABLE on COMBUSTION not degradable on combustion Answer :B

Discussion

19741.	Question : Chlorofluoro carbons are responsible for
Answer» ACID rain Ozone layer DEPLETION GLOBAL warming Thermal pollution Answer :B

Discussion

19742.	Question : Chloride ions are required for –
Answer» Splitting of water to LIBERATE OXYGEN during photosynthesis Pollen germination Carbohydrate Translocation Both (2) & (3) Answer :A

Discussion

19743.	Question : Chlorenchyma is known to develop in the:-
Answer» Cytoplasm of chlorella Mycellium of a GREEN MOULD such as Aspergilus Spore CAPSULE of a moss Pollen TUBE of Pinus Answer :C

Discussion

19744.	Question : Chlorenchyma is
Answer» Chlorophyll containing parenchyma Mechanical tissue between TWO successive leaf primordia Region of ORIGIN of root branch Region of origin of STEM branch Answer :A

Discussion

19745.	Question : CHl.-b 65+CH.-a 660+CHl.-a 670+CHl.-a 678+CHl.-a 680-690 represent
Answer» PS-I PS-II Both the SYSTEMS NONE of these Answer :C

Discussion

19746.	Question : Chl a and Chl b have same structure except Chl a has ……….. Group while Chl b has ……… group.
Answer» `Ch_(4)CH_(3)` `CH_(3)`, CHO CHO, `CH_(3)` `CH_(3), CH_(2)` ANSWER :B

Discussion

19747.	Question : Chitin is a
Answer» Polysaccharide Nitrogenous polysaccharide Lipoprotein Protein Answer :B

Discussion

19748.	Question : Chipko movement - local women protecting Trees _____ - Bishnois show courage to protect wild life
Answer» SOLUTION :AMRITA DEVI.

Discussion

19749.	Question : Chipko movement in which local women showed enormous bravery in protecting trees by hugging them occurred in
Answer» 1731 in Jodhpur led by AMRITA Devi Bishnoi 1974 in GARHWAL HIMALAYAS led by Gaura Devi 1983 in Uttara KANNADA led by Pandurang Hegde 1985 in Maharashtra led by Medha Patkar ANSWER :B

Discussion

19750.	Question : China rose has
Answer» PARIETAL placentation, TWISTED AESTIVATION , monodelphous, perigynous flower. Axile placentation , twisted aestivation , monodelphous , hypogynous flower. Parietal placentation , volvate aestivation , DIADELPHOUS , perigynous flower. Axile placentation , valvate aestivation , diadelphous , hypogenous flower . ANSWER :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : Choose odd one w.r.tflowering and fruiting pattern

Question : Choose odd one out w.r.t. origin

Question : Choose incorrect statement w.r.t mesophyll cells ofC_4-plants

Question : Choose incorrect statement w.r.t. Rhizophora.

Question : Choose incorrect statement:-

Question : Choose incorrect option w.r.t fungi producing endogenous asexual and sexual respectively.

Question : choose incorrect option w.r.t shoot apex

Question : Choose incorrect option w.r.t. Ethephon.

Question : Chooseincorrect option w.r.t chloroplast

Question : Choose correct statements writ. phytochromes. A. They absorbs both far-red and red lights B. The P_r form is physiologically active and is present in cytosol C. The P_(fr) form is physiologically active and is attached to plasma membrane D. For LDP P_(fr)/P_r > 1

Question : Choose incorrect match amongst restriction enzymes listed in column l and type of ends produced in column ll

Question : choose e correct option w.r.t. leg- haemoglobin

Question : choose correct sequence of taxonomic categories in decreasing order

Question : Choose correct statement about anatomical arrangement of lungs.

Question : Choose correct option of development of animal kingdom.

Question : choose correct pairs of PGRs showing antagonistic effects.(A) ABA and GAs for seed germination(B) ABA and GAs for stomatal closure (C) Auxin and cytokinin for apical dominance

Question : Choose correct option for reaction chamber of Urey and Millers experiment.

Question : Choose correct one w.r.t. respiratory climactic.

Question : Choose any three microbes, from the following which are suited for organic farming which is in great demand these days for various reasons. Mention one application of each one chosen. Mycorrhiza, Monascus, Anabaena, Rhizobium, Methanobacterium, Trichoderma

Question : Choose correct combination of labelling in aquatic zones:

Question : Chondrocytes produce _____.

Question : Cholesterol is a

Question : Cholera leads to dehydration. Why?

Question : Cholera is caused by :

Question : Chlorosis is the loss of chlorophyll leading to yellowing in leaves. This symptom is caused by the deficiency of elements like :-

Question : Chloroplastswithoutgrana are known to occur:

Question : Chloroplast of Chlamydomonas is

Question :Chloroplast dimorphism is a characteristic feature of:

Question : Chloroplast are located at the ______ with their broad surfaces_____ to the cell wall of the mesophyll cells.

Question : Chlorophyllousbundle sheath cells occurs in

Question : Chlorophyll is a large molecule composed of

Question :Chlorophyll ' C" differ from Chlorophyll 'a' and ' b ' in

Question : Chlorophyll b. chlorophyll d and cholorophyll c aremajor pigments in________. _______.and _________.respectively

Question : Chlorophyll appears _____ When flouresed and carotene appears ____ (colour)

Question : Chlorophyll-a molecule cannot remain in ionized state for more than ……… seconds.

Question : Chlorophyll absorbs:

Question : Chlorophyll-a and Chlorophyll-b.

Question : Chlorofluorocarbons (CFCs) are widely used as refrigerants. Then why it is suggested to reduce its emission as far as possible ? Explain.

Question : chlorinatedhydroccarbonsenters throughone trophiclevel and its concentrationis increasedas PPMinsuccessivetrophic levels, its nature is

Question : Chlorofluoro carbons are responsible for

Question : Chloride ions are required for –

Question : Chlorenchyma is known to develop in the:-

Question : Chlorenchyma is

Question : CHl.-b 65+CH.-a 660+CHl.-a 670+CHl.-a 678+CHl.-a 680-690 represent

Question : Chl a and Chl b have same structure except Chl a has ……….. Group while Chl b has ……… group.

Question : Chitin is a

Question : Chipko movement - local women protecting Trees _____ - Bishnois show courage to protect wild life

Question : Chipko movement in which local women showed enormous bravery in protecting trees by hugging them occurred in

Question : China rose has

Question : Chloroplast are located at the __ with their broad surfaces_ to the cell wall of the mesophyll cells.

Question : Chlorophyll b. chlorophyll d and cholorophyll c aremajor pigments in____. _.and _______.respectively

Question : Chlorophyll appears _ When flouresed and carotene appears (colour)