Biology. tho fokku. (314) Assignment - I. ewy;kadu i=k & I. (Lessons 1-15) ¼ikB 1 ls 15 rd½

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1 tho fokku (314) Assignment - I ewy;kadu i=k & I (Lessons 1-15) ¼ikB 1 ls 15 rd½ Max. Marks: 25 dqy vad % 25 Note: (i) All questions are compulsory and carry equal marks. fvii.kh% lhkh iz'uksa ds mùkj nsus vfuok;z gsaa lhkh iz'uksa ds vad leku gsaa (ii) Write your name, enrolment number, AI name and subject etc. on the top of the first page of the answer sheet. mùkj iqflrdk ds izfke i`"b ij Åij dh vksj viuk uke] vuqøekad] v/;;u dsunz dk uke] fo"k; vkfn Li"V 'kcnksa esa fyf[k,a 1. Answer any two of the following questions: fueufyf[kr iz'uksa eas ls fdugha nks ds mùkj nhft,% Explain the various methods by which small molecules are transported across the plasma membrane. mu fofhkuu fof/k;ksa dk o.kzu dhft, ftuds }kjk IykTek f>yyh ds vkj&ikj NksVs v.kqvksa dk ifjogu gksrk gsa (b) Mention the name given to the region in the bacterial cell where DNA is located. Also explain the process of sexual reproduction in bacteria. csdvhfj;k dksf'kdk esa ml {ks=k dk uke crkb, tgka DNA ik;k tkrk gsa csdvhfj;k esa ysafxd tuu izfø;k dk Hkh o.kzu dhft,a (c) Name the kingdom, phylum and class of the following animals. Mention three characteristics of each animal (i) Bat (ii) Scorpion fueufyf[kr tarqvksa ds txr] Qkbye rfkk Dykl ds uke fyf[k,a izr;sd turq ds rhu eq[; y{k.k Hkh nhft,a (i) pexknm+ (ii) fcpnw 2. Answer any two questions of the following. fueufyf[kr esa ls fdugh nks dk mùkj nhft,% State the reason for the following: (i) Lysosomes are known as suicide bags. (ii) Transpiration is considered to be a necessary evil. fueufyf[kr dk dkj.k crkb,% (i) ykblkslkse dks ^^vkre?kkrh FkSfy;ka** dgk tkrk gsa (ii) ok"iksrltzu dks,d ^^vko';d cqjkbz** ekuk tkrk gsa 66

2 (b) (c) Explain the process of transmission of nerve impulse. raf=kdk vkos'k ds izs"k.k dh fof/k dk o.kzu dhft,a Draw the transverse section of dicot root and label the parts whose description is given below: (i) It is the seat of origin of lateral roots. (ii) A many layered zone of thin walled parenchymatous cells. f}chti=kh tm+ dh vuqizlfk dkv dk fp=k cukb;s rfkk blesa mu Hkkxksa dks ukekafdr dhft, ftudk fooj.k uhps fn;k x;k gs% (i) ;g ik'ohz; tm+ksa dh mrifùk dk LFkku gsa (ii) ;g cgqdksf'kdh; cm+k [k.m ¼tksu½ gs,oa iryh fhkfrr dh isjudkbek dksf'kdkvksa ls cuk gqvk gsa 3. It is assumed that the present day organisms have gradually evolved from simple forms of a common ancestor. Provide five evidences to support this statement. Give a brief explanation of each evidence. ^^;g ekuk tkrk gs fd vkt ds tho ljy izdkj ds leku iwozt ls /khjs&/khjs fodflr gq, gsaa** bl dfku ds lefkzu esa vki dksbz ikap izek.k izlrqr dhft,a izr;sd izek.k dk laf{kir o.kzu dhft,a Describe the various factors affecting rate of respiration in plants. Mention the significance of R.Q. (Respiratory Quotient) ikniksa esa 'olu dks izhkkfor djus okys fofhkuu dkjdksa dk o.kzu dhft,a 'olu xq.kkad (R.Q.) dk D;k egro gs\ 4. (i) Explain the process of haemodialysis (ii) Describe the role of liver in excretion. (i) gheksmk;kfyfll dh izfø;k dk o.kzu dhft,a (ii) mrltzu eas ;Ñr dh D;k Hkwfedk gs\ Differentiate between the following: (i) Pulmonary artery and pulmonary vein (ii) Superior vena cava and inferior vena cava (iii) Bicuspid valve and tricuspid valve (iv) Systolic pressure and diastolic pressure (v) Antigen and antibody fueufyf[kr esa varj Li"V dhft,% (i) Qq Qql /keuh,oa Qq Qql f'kjk (ii) m/ozegkf'kjk,oa fueu egkf'kjk (iii) f}oyuh dikv,oa f=koyuh dikv (iv) izdqapuh nkc,oa vuqf'kffkyuh nkc (v) izfrtu,oa izfrj{kh 67

3 5. Project Work Go out to a nearby field and collect some leguminous plants. Observe their roots carefully. Write your observations and draw the diagrams of their roots. Prepare a detailed report regarding the cause of the development of nodules as well as their significance. Draw a simplified flow chart of biochemical steps involved in this process. ifj;kstuk dk;z vkl ikl ds fdlh [ksr ij tkb, vksj dqn nyguh iks/ks,df=kr dhft,a budh tm+ksa dk /;kuiwozd voyksdu dhft,a vius voyksdu dks fyf[k,,oa bu iks/kksa dh tm+ksa dk fp=k cukb,a tm+ksa esa xzaffkdkvksa ds fuekz.k dk dkj.k,oa buds egro ds ckjs esa,d folr`r fjiksvz rs;kj dhft,a bl izfø;k esa fufgr tso jklk;fud lksikuksa ¼inksa½ dk,d ljy izokg pkvz cukb;sa 68

4 tho fokku (314) Assignment - II ewy;kadu i=k & II (Lessons 16-30) ¼ikB 16 ls 30 rd½ Max. Marks: 25 dqy vad % 25 Note: fvii.kh% (i) All questions are compulsory and carry equal marks. iz'uksa ds mùkj nsus vfuok;z gsaa lhkh iz'uksa ds vad leku gsaa (ii) Write your name, enrolment number, AI name and subject etc. on the top of the first page of the answer sheet. mùkj iqflrdk ds izfke i`"b ij Åij dh vksj viuk uke] vuqøekad] v/;;u dsunz dk uke] fo"k; vkfn Li"V 'kcnksa esa fyf[k,a 1. Answer any two of the following questions. fueufyf[kr iz'uksa esa ls fdugh nks dk mùkj nhft,a Given below are some hormones. Name the gland responsible for the secretion of each hormone. uhps dqn gkekszu ds uke fn, x, gsaa izr;sd gkekszu ds lzo.k ds fy, mrrjnk;h xzaffk dk uke fyf[k,a (i) Calcitonin dsfylvksfuu (ii) Glucagon XywdSxkWu (iii) Adrenaline,sMªhusfyu (iv) Vasopressin oslksizsflu (v) Human chorionic gonadotropin ekuo dksfjvksfud xksusmksvªksfiu (b) (i) How is the polar bear able to survive in the polar regions? /kzqoh; {ks=kksa esa /kzqoh; Hkkyw fdl izdkj thfor jg ikrk gs\ (ii) Name an important gas released by the biogas plant that is one of the cause of global warming. ck;ksxsl IykaV ls fudyus gksus okyh ml eq[; xsl dk uke crkb, tksfd Hkwe.Myh; rkiu dk dkj.k gsa 69

5 (c) (iii) Why does a plant leaf fall down from the plant when it becomes old? iks/ks dh irrh tc iqjkuh gks tkrh gs rks ;g iks/ks ls VwV dj D;ksa fxj tkrh gs\ State the scientific terms for the following statements: fueufyf[kr dfkuksa ds fy, oskkfud 'kcnkoyh crkb,% (i) (ii) Technique of plant tissue culture used for the propagation of plants. iks/kksa ds izo/kzu ds fy, mi;ksx dh tkus okyh ikni Ård lao/kzu rduhda Chemical substances that promote, inhibit or modify growth and development in plants. og jklk;fud inkfkz tks iks/kksa esa o`f),oa ifjo/kzu dks c<+krs] jksdrs ;k :ikurfjr djrs gsaa (iii) Production of offspring by the formation and subsequent fusion of gametes. ;qxedksa dk fuekz.k o ckn esa muds lay;u }kjk larfr dk mriuu gksuka (iv) Organisms that feed on dead plants and animals. os tho tks e`r ikniksa,oa turqvksa ls Hkkstu izkir djrs gsaa (v) A living organism which causes a disease. os tho tks jksx dk dkj.k gsaa 2. Answer any two of the following questions. fueufyf[kr iz'uksa esa ls fdugha nks ds mùkj nhft;sa (b) What is the cause of improper functions of a gene? Explain the steps of gene therapy involved in the treatment of Thalassemia (a genetic disorder). fdlh thu dh vlkeku; fø;k'khyrk dk D;k dkj.k gs\ FkSySlhfe;k ¼,d vkuqoaf'kd jksx½ ds mipkj ls lecfu/kr thu&mipkj ds pj.kksa dk o.kzu dhft,a What are 'T' Lymphocytes? How are they different from the 'B' Lymphocytes? What does MMR stand for in MMR vaccines. T ylhdk dksf'kdk,a D;k gksrh gsa\ ;s B ylhdk dksf'kdkvksa ls fdl izdkj fhkuu gsa] MMR Vhds esa MMR D;k n'kkzrk gs\ (c) (i) What is the difference between florigen and vernalisation. yksfjtsu,oa clarhdj.k esa vurj Li"V dhft,a (ii) Give the causative agent and mode of transmission of malaria. eysfj;k ds jksxtud dk uke crkb,a eysfj;k dk laøe.k fdl izdkj gksrk gs\ (iii) Name the disease which is caused by the deficiency of vitamin B 12. ml jksx dk uke crkb, tks fovkfeu B 12 dh vyirk ds dkj.k gksrk gs\ 3. What is a reflex action? With the help of a suitable example explain a simple reflex and a conditioned reflex. izfrorz fø;k D;k gksrh gs\,d mi;qdr mnkgj.k ds }kjk ljy,oa izkuqdwyh izfrorz dk o.kzu dhft,a (b) Name the principal heat regulating centre in our body. Explain any two ways by which our body is able to keep warm in the cold weather. 70

6 (b) (c) (d) (e) gekjs 'kjhj esa rkifu;eu ds iz/kku dsunz dk uke crkb,a lnhz ds eksle esa gekjk 'kjhj fdl izdkj xez jg ikrk gs\ dksbz nks rjhds crkb,a Give any two examples of anthropogenic causes of soil erosion. ekuotfur dkj.kksa ls e`nk vijnu ds nks mnkgj.k nhft,a With the help of a suitable example explain the role of transgenic microbes mi;qzdr mnkgj.k dh lgk;rk ls ikjthuh thok.kqvksa dh Hkwfedk dk o.kzu dhft,a What is bioremediation? tso mipkj D;k gs\ What role do the decomposers play in our ecosystem? gekjs ikfjflfkfrd ra=k esa vi?kvdksa dh D;k Hkwfedk gs\ Why is the energy flow in our ecosystem linear? gekjs ikfjflfkfrd ra=k esa ÅtkZ dk izokg jsf[kd D;ksa gksrk gsa 4. (i) What is scalariform conjugation? Give one example where it occurs lh<+huqek la;qxeu D;k gksrk gs\,d mnkgj.k nhft, tgka bl izdkj dk la;qxeu gksrk gsa (ii) Give any two characteristics of insect pollinated flowers. mu iq"iksa ds nks y{k.k crkb, ftuesa dhvksa }kjk ijkx.k gksrk gsa (iii) Explain why generally only the male child suffers from colour blindness? lkeku;r% dsoy uj f'k'kq gh o.kkzu/krk ls xzlr gksrk gsa dkj.k Li"V dhft,a (iv) What is "central dogma"? Give the sequence in which it operates. lsuvªy Mksxek D;k gs\ blds leiuu gksus dk vuqøe crkb,a (i) What is the role of amniotic fluid? What do you understand by artificial insemination?,feu;ksfvd nzo dh D;k Hkwfedk gksrh gs\ Ñf=ke xhkkz/kku ls vki D;k le>rs gsa\ (ii) State the chromosonal abnormality in: fueufyf[kr esa Øksekslkseh vlekurk,a crkb,% (b) Turner's syndrome VuZj flamªkse Klinefelter's syndrome DykbuQsYVj flamªkse (iii) What is Chargaff's rule? pkxszq dk fu;e D;k gs\ (iv) What is the importance of genetic engineering in our life? Explain with the help of suitable example. 71

7 gekjs thou esa vkuqoaf'kd vfhk;kaf=kdh dk D;k egro gs\ mi;qdr mnkgj.kksa dh lgk;rk ls o.kzu dhft,a 5. Project work Make a chart of the various vaccines that you have taken right from the time of your birth till day. You can take help from your mother or father. Note the age at which you took these vaccines. Also mention the disease for which you had taken them. Did you take booster doses also for any of the vaccines? Prepare a report. ifj;kstuk dk;z tue ls ysdj vkt rd vkidks ftrus Vhds yxk, x, gsa mudk,d pkvz cukb,a vki vius ekrk&firk dh lgk;rk ys ldrs gsaa ftl&ftl vk;q esa vkidks Vhds yxk, x, mls uksv dhft, mu jksxks adk Hkh o.kzu dhft, ftudh jksdfkke ds fy, ;s Vhds yxk, x,a D;k vkius fdlh Vhds dh cwlvj [kqjkd yh gs\ bl ckjs esa,d fjiksvz rs;kj djsaa 72

8 tho fokku (314) Assignment - III ewy;kadu i=k & III (Lessons 31-35) ¼ikB 31 ls 35 rd½ Optional Modules 1 and 2 Max. Marks: 25 dqy vad % 25 Note: (i) Attempt questions from either optional module 1 (Tools and Techniques in ) or optional module - 2 (Economic ) fvii.kh% fn;s x, iz'uksa esa ls ekwm~;wy -1 ¼thofoKku ds midj.k,oa rduhdsa½ ;k ekwm~;wy- 2 ¼vkfFkZd thofokku½ ds iz'uksa ds mùkj nhft,a (ii) All questions are compulsory. All questions carry equal marks. iz'uksa ds mùkj nsus vfuok;z gsaa izr;sd iz'u ds vad leku gsaa (iii)write your name, enrolment number, AI name and subject etc. on the top of the first page of the answer sheet. mùkj iqflrdk ds izfke i`"b ij Åij dh vksj viuk uke] vuqøekad] v/;;u dsunz dk uke] fo"k; vkfn Li"V 'kcnksa esa fyf[k,a Optional Module - 1 Tools and Techniques 1. Answer any two of the following questions. fueufyf[kr iz'uksa esa ls fdugh nks dk mùkj nhft,a (b) (c) Name the microscopes which can be used, for observing (i) cheek cells (ii) details of organelles of a cell. State the differences between their objective lenses, source of illumination and extent of magnification or resolving power. mu lw{enf'kz;ksa ds uke crkb, ftudk mi;ksx (i) xky dh dksf'kdkvksa (ii) dksf'kdk vaxdksa ds ijh{k.k esa fd;k tkrk gsa buds vfhkn`';d ysal] izdkf'kr djus ds lzksr,oa vko/kzu {kerk vfkok fohksnu 'kfdr esa vurj Li"V dhft,a State the functions of the following instruments (i) Incubator (ii) Kymograph Give three reasons for the need for finding the ph value of a sample fueufyf[kr midj.kksa ds dk;ks± dk o.kzu dhft,a (i) bud;wcsvj (ii) dkbeksxzkq fdlh uewus ds ph eku dk irk yxkus ds rhu dkj.kksa dk myys[k dhft,a Describe the following and mention their use: fueufyf[kr dk o.kzu,oa budk mi;ksx Hkh crkb,% (i) Vasculum and biological dredge 73

9 (ii) osld;wye rfkk tso fud"kzd What is meant by taxidermy? VSDlhMehZ dk vfkz D;k gsa 2. Answer any two from the following three questions: fueufyf[kr iz'uksa esa ls fdugha nks ds mrrj nhft,% Given below is a table which carries the name of instruments and their uses. Fill in the blanks left in the table. Name of Equipment Berlese funnel Green house Formalin filled jars Function Teacher carries to class as an aid for the lecture Ornamental fish and aquatic plants are kept uhps,d rkfydk nh xbz gsa bleas midj.kksa ds uke o buds mi;ksx fy[ks x, gsaa rkfydk esa fjdr LFkkuksa dh iwfrz dhft,a midj.k dk uke mi;ksx cjyht Qusy v/;kid ds }kjk d{kk esa fo"k; dks le>kus esa mi;ksx fd;k tkrk gs xzhu gkml ltkovh enfy;ksa,oa tyh; ikniksa dks j[kk tkrk gsa QkWesZyhu ls Hkjk tkj (b) Observe the two diagrams depicting the techniques used in. Name the techniques. uhps fn, x, fp=kksa dk voyksdu dhft,a bu fp=kksa esa tho fokku esa mi;ksx dh tkus okyh rduhdksa dks fn[kk;k x;k gsa bu rduhdksa ds uke crkb,a What are these techniques used for? Also state what is contained in the part labelled "solvent" in (I) or homogenate in (II) bu rduhdksa dk mi;ksx fdl fy, fd;k tkrk gsa fp=k (I) esa ftl Hkkx ij ^^foyk;d** vfkok fp=k (II) esa ftl Hkkx ij ^^lekaxhñr** fy[kk x;k gs muesa D;k Hkjk gs\ 74

10 Figure 1 Figure 2 (c) Name the technique shown in the following diagram and mention its advantage. Label the parts shown as blank and explain them. uhps fn, x, fp=k esa fn[kkbz xbz rduhd dk uke rfkk blds ykhk crkb,a [kkyh NksM+s x, Hkkxksa dks ukekafdr dhft, rfkk budk o.kzu dhft,a (1) (2) (3) 3. Name the parts of a kymograph and mention the function of each of these parts. dkbeksxzkq ds Hkkxksa ds uke crkb,,oa izr;sd Hkkx ds dk;ks± dk o.kzu dhft,a Explain in details how you will obtain onion root tips to be used for staining in order to study meiosis. lw=kh fohkktu dk v/;;u djus gsrq LVsfuax ds fy, mi;ksx dh tkus okyh I;kt dh tm+ ds fljs vki fdl izdkj izkir djsaxs\ folrkjiwozd fyf[k,a 4. State the factors necessary for the management of cages needed to keep cockroaches and rats for laboratory work. Name and describe the place where frogs are kept for similar use. 75

11 iz;ksx'kkyk dk;z gsrq frypv~vs,oa pwgs j[kus ds fy, vko';d fiatjksa ds izcu/ku ds fy, dksu ls dkjd vko';d gsa\ iz;ksx'kkyk dk;z ds fy, es<dksa dks ftl LFkku ij j[kk tkrk gs mldk uke,oa o.kzu dhft,a (i) What is the purpose of fixing and staining biological material? Name the solution and mention the ingredients of the solution in which living cells may be kept for sometime so that they donot undergo change. tsfod inkfkks± ds flfkjhdj.k,oa jatu dk D;k mís'; gs\ ml foy;u dk uke crkb;s ftlesa thfor dksf'kdkvksa dks dqn le; ds fy, j[kk tkrk gs ftlls fd muesa fdlh izdkj dk ifjorzu u gksus ik;sa bl foy;u esa iz;qdr inkfkks± ds uke crkb,a (ii) Give the compositon of one fixative and one stain that you shall need for observing cells under the compound microscope.,d flfkjhdkjd,oa,d jatd dk uke nhft;s ftudh vkidks la;qdr lw{en'khz esa dksf'kdkvksa ds fujh{k.k djrs le; vko';drk gksxha 5. Project Work Obtain some fruit flies, Drosophila, from the fruit shop. They are small flies with red eyes. You may trap them by placing an over ripe banana is an empty jam bottle. The flies will enter the bottle when you leave it at the fruit shop. Upon collecting the flies cover the bottle with a thin cloth with the help of a rubber band. Note the number of flies trapped in the bottle after 2 days. Open the mouth of the bottle to let them fly away as they would have already laid the eggs. Observe everyday. Record the following: (i) Time taken for the larvae to hatch. (ii) Change in the size of the larvae. (iii) Number of days taken by the larvae to become pupae. [The fully growth larvae move up the walls of the bottle to pupate]. (iv) Time taken to hatch into flies. ifj;kstuk dk;z fdlh Qy dh nqdku ls dqn Qy efd[k;ka] MªklksfQyk izkir dhft,a ;s yky vka[kksa okyh NksVh efd[k;ka gksrh gsaa vki budks,d tse dh [kkyh cksry esa,d ids gq, dsys dks j[kdj Hkh idm+ ldrs gsaa tc vki bl tse cksry dks nqdku esa NksM+ nsaxs rc ;s efd[k;ka mlesa izos'k dj tk;saxha efd[k;ksa ds,d=k gks tkus ij cksry ds eqag dks,d eghu dim+s ls <ddj jcjcs.m dh lgk;rk ls cksry dk eqag can dj nsrs gsaa nks fnu ds i'pkr cksry esa idm+h x;h efd[k;ksa dh la[;k dh x.kuk dhft,a cksry dk eqag [kksy nsa rkfd efd[k;ka mm+ tk;saa os vams ns pqdh gksaxha izfrfnu fujh{k.k dhft;sa fueufyf[kr dks fjdkmz dhft,& (i) ykosz dks vams ls fudyus esa yxk le;a (ii) ykosz ds vkdkj esa vk;k cnykoa (iii) ykokz ls I;wik cuus esa yxus okys fnuksa dh la[;k ¼iw.kZ fodflr ykokz] I;wik cuus ds fy, cksry dh nhokj ij pyrs gs½ (iv) efd[k;ksa ds cuus esa yxk le;a Take a large transparent glass or plastic bottle. Procure two small fish from the market. Add some small aquatic plants from some nearby pond. Observe and record the 76

12 behaviour of these small fishes and their morphology. Also note how they move and breathe. This would act as a make aquarium.,d cm+h ikjn'khz dkap ;k IykfLVd dh cksry yhft,a cktkj ls nks enfy;ka ykb,a mlesa ikl ds rkykc ls yk;s dqn tyh; iks/ks j[k nhft;sa bu NksVh enfy;ksa ds O;ogkj,oa mudh vkdkfjdh dks nsf[k;s vksj fjdkmz dhft,a os dsls xfr djrh,oa lkal ysrh gsa] budk Hkh fujh{k.k dhft;sa ;g,d izdkj ls,sdosfj;e dh rjg dk;z djsxka Optional Module-2 Economic 1. Answer any two of the following questions. fueufyf[kr iz'uksa esa ls fdugh nks dk mùkj nhft,a (i) Classify the following crops into Kharif, Rabi or Ziad and also into cereal, vegetable or root crop. wheat, cucumber, maize. fueufyf[kr Qlyksa dks [kjhq] jch,oa tk;n dh Qlyksa esa oxhzñr,oa vukt] lcth ;k tm+ okyh Qlyksa ds :i esa Hkh oxhzñr dhft;sa xsgwa] [khjk] eddk (ii) Pulses are not only proteinaceous food but plants of pulses also make the soil fertile. Explain how. nkyksa u dsoy izksvhu;qdr [kk inkfkz gsa vfirq buds iks/ks Hkwfe dks mitkå Hkh cukrs gsaa fdl izdkj buls /kjrh mitkå gks tkrh gs] le>kb,a (b) Complete the flow chart regarding ornamental plants. Annuals Ornamental Plants Shrubs Indoor plants Foliage ltkovh iks/kksa ds fy, fn;s x;s izokg pkvz dks iw.kz :i ls Hkfj;sA ltkovh iks/ks,do"khz; >kfm+;k?kj ds Hkhrj mxk, tkus okys iks?ks i.khz 77

13 (c) Complete the table showing diseases and pathogens of domestic animals. Pathogen Name of disease Anthrax Foot and mouth Fungus Trypanosomiasis Rinder pest ikyrw i'kqvksa ds jksx,oa jksxtudksa dks n'kkzrh rkfydk dks iw.kz dhft,a jksx tud jksx dk uke 2. Answer any two of the following questions: fueufy[kr iz'uksa esa ls fdugha nks iz'uksa ds mùkj nhft,% (b) dod Give the meaning of the following terms fueufyf[kr 'kcnksa dk vfkz nhft;s% (i) Retting vixyu (ii) Terrarium Vsjsfj;e (iii) Artificial insemination Ñf=ke oh;zlspu (iv) Embryo transplant Hkwz.k izr;kjksi.k (v) Pisciculture ekr;ldh (i) Expand the following fueufyf[kr dks folrkfjr dhft;s CDRI NDDB (ii),afkszdl eq[k,oa ikn dk jksx fvªisukslksfe;kfll fjamjislv Name the kind of silk yielded by the following silk worm moths. Antherea assama, Philosamia ricini and Bombyx mori fueufyf[kr js'ke dhv 'kyhkksa ls izkir gksus okyh js'ke dh fdleksa ds uke crkb;sa,safkhfj;k vlkek] Qkbykslkfe;k fjflukbz] ckwfecdl eksjkbz 78

14 (c) (i) Give one point of difference between lac and shellac Estuarine and marine fisheries Foliage and flowering plants fueu ds chp dsoy,d varj nhft;s% yk[k vksj 'ksysd Tokjun eq[kh;,oa leqnzh enfy;ka i.khz,oa iq"ih iks/ks (ii) Explain what happens to fish when excessive chemical fertilizers reach pond waters. enfy;ksa dk D;k gksrk gs tc rkykc ds ty esa vr;f/kd ek=kk esa jklk;fud mozjd fey tkrs gsa] O;k[;k dhft,a 3. What do you mean by green revolution? State any four factors which helped to bring about green revolution in our country? gfjr Økafr ls vki D;k le>rs gsa\ dksbz pkj dkjd crkb;s tks gekjs ns'k esa gfjr Økafr ykus esa ennxkj lkfcr gq,a State five uses of forests which justify that forests ought to be conserved. ou ds ikap mi;ksx crkb;s ftlls ;g fu.kz; fd;k tk lds fd ouksa dk laj{k.k djuk,d drzo; gsa 4. List five different uses of fish to humans which make fisheries an economically important venture. ekuo ds fy, enyh ds ikap fofhkuu mi;ksxksa dh lwph cukb;s ftuds dkj.k ekrl;dh vkffkzd egro dk,d dke cu tkrk gsa Differentiate between agriculture and floriculture. Explain to your friend how he can grow plants through hydroponics Ñf"k,oa iq"iñf"k esa varj dhft,a vius fe=k dks le>kb;s fd ty Ñf"k }kjk fdl izdkj iks/ks mxk ldrs gsa\ 5. Project work Obtain "mushroom seed" and grow mushrooms, preparing your own compost and spawning them. Make observations on the growth of culture and mark the time taken till ready for harvesting. At the end of doing this, write a report. ifj;kstuk dk;z e'k:e ds chtksa dks yhft, vksj e'k:e mxkb;s] Lo;a deikslv rs;kj dhft, vksj mudh chtkbz dhft,a mxrs gq, lao/kzu dk fujh{k.k dhft;s vksj Qly izkir gksus esa yxs le; dks uksv dhft;sa bl ij var esa fjiksvz fyf[k,a Visit a biogas plant. Study its working and prepare a report. ck;ksxksl la;a=k dks ns[kus tkb;sa bldh dk;z fof/k dk v/;;u dhft;s vksj,d fjiksvz rs;kj dhft,a 79