Tiêu đề 2. P2C2 (প্রাণী পরিচিতি হাইড্রা).pdf ✅

cÖvYxi cwiwPwZt nvBWav  Practice Content 2 25. ewnt‡Kvlxq cwicvK Kx? DËit- ‡Kvb wbw`©ó †Kv‡li Af ̈šÍ‡i cwicvK bv n‡q †Kv‡li evB‡i †Kvb bvjx ev _wji g‡a ̈ †h cwicvK msNwUZ nq Zv‡K ewnt‡Kvlxq cwicvK e‡j| 26. AšÍt‡Kvlxq cwicvK Kx? DËit- ‡KvbI wbw`©ó †Kv‡li Af ̈šÍ‡i Lv` ̈ cwicvK nIqvi c×wZ‡K AšÍt‡Kvlxq cwicvK e‡j| 27. cywó Kx? DËit- ‡h •RewbK cawμqvq cavYx wbR cwi‡ek †_‡K ca‡qvRbxq RwUj •Re Lv` ̈ ManY K‡i wewfbœ GbRvB‡gi mnvqZvq †Kv‡l cwienb I †kvlY Dc‡hvMx mij I `aeYxq Lv‡` ̈ cwiYZ K‡i cwicvKK„Z Lv` ̈mvi †kvl‡Yi gva ̈‡g †`‡ni ¶qc~iY, e„w×mvab, kw3 Drcv`b BZ ̈vw` kvixie„Ëxq Kvh©Kjvc A¶yYœ iv‡L Ges Lv‡` ̈i AcvP ̈ Ask †`n †_‡K †ei K‡i †`q Zv‡K cywó e‡j| 28. Pjb Kx? DËit- cavYxi ̄^Ztca‡Yvw`Z n‡q ̄’vb cwieZ©b Kivi c×wZ‡K Pjb e‡j| 29. d ̈v‡MvmvB‡Uvwmm wK? DËit- ‡h •RweK cawμqvq hv‡Z d ̈v‡MvmvBUm †Kvl ̧‡jv Ab ̈vb ̈ †Kvl wKsev †KvlKwYKv‡K f¶Y K‡i Zv‡K d ̈v‡MvmvB‡Uvwmm e‡j| 30. MøvBwWs Pjb Kx? DËit- Hydra c`Z‡ji ewntZ¡Kxq †Kvl ̧‡jv †_‡K wcw”Qj GK ai‡bi im ¶iY K‡i| c‡i H ̄’vb †_‡KB †Kvlxq ¶Yc‡`i A ̈vwge‡qW Pj‡bi mvnv‡h ̈ nvBWav Lye Av‡ ̄Í Av‡ ̄Í axiMwZ‡Z Lye mvgvb ̈ c_ AwZμg K‡i| Hydra-i G Pjb cawμqv‡K MøvBwWs Pjb e‡j| 31. Rbb Kx? DËit- ‡h cawμqvq Rxe wb‡R eskai i¶vi Rb ̈ caRbb¶g Abyiƒc Rxe m„wó K‡i Zv‡K Rbb e‡j 32. A‡hŠb caRbb Kx? DËit- ‡h cawμqvq Rbb‡Kvl A_©vr ïμvYy I wW¤^vYy QvovB cavYx eskwe ̄Ívi K‡i Zv‡K A‡h.b caRbb e‡j| 33. †hŠb caRbb Kx? DËit- ‡h c×wZ‡Z Rxe n ̈vcø‡qW msL ̈K Rbb †Kvl Z_v ïμvYy I wW¤^vby MVb I Zv‡`i wgj‡bi d‡j wWcø‡qW RvB‡MvU m„wói gva ̈‡g wkï Rxe Drcbœ K‡i Zv‡K †h.b caRbb e‡j| 34. gyKy‡jv`Mg Kx? DËit- ‡h cawμqvq Amg wefvR‡bi gva ̈‡g gvZ„‡`n n‡Z GK ev GKvwaK gyKyj m„wó nq, hv e„w×cvß n‡q cieZ©xKv‡j gvZ„‡`n n‡Z wew”Qbœ nq Ges ̄^vaxbfv‡e Rxebhvcb K‡i Zv‡K gyKy‡jv`Mg e‡j| 35. M ̈v‡g‡Uv‡R‡bwmm Kx? DËit- Rbb †Kvl ev ïμvYy I wW¤^vYy MVb cawμqv‡K M ̈v‡g‡Uv‡R‡bwmm e‡j| 36. DI‡R‡bwmm Kx? DËit- wW¤^vkq †_‡K wW¤^vYy m„wói cawμqv‡K DI‡R‡bwmm ev wW¤^vYyRbb e‡j| 37. wb‡lK Kx? DËit- ‡h.b caRb‡b wW¤^vYy I ïμvYyi wgjb‡K wb‡lK e‡j| 38. giæjv Kx? DËit- RvB‡MvU gvB‡Uvwmm cawμqvq eivei wefvwRZ n‡q †h eû‡Kvlx, wb‡iU I †MvjvKvi †Kv‡l cwiYZ nq Zv‡K giæjv e‡j| 39. M ̈v÷ayjv Kx? DËit- eøv÷yjv cieZ©x eû-åƒYxq ̄Íi wewkó MVb‡K M ̈v÷ayjv e‡j| 40. eøv÷yjv Kx? DËit- giæjvi †Kvl ̧‡jv GK ͇̄i mw1⁄2Z n‡q GKwU duvcv, †Mvj åæ‡Y cwiYZ nq, G‡K eøv÷yjv e‡j| 41. ̄úvg©v‡Uv‡R‡bwmm wK? DËit- ïμvYy m„wói cawμqv‡K ̄úvg©v‡Uv‡R‡bwmm ev ïμvYyRbb e‡j| Abyaveb g~jK cÖ‡kœi DËi 1. †g‡mvwMøqvi KvR wK? DËit- ‡g‡mvwMøqv n‡jv nvBWavi GwcWvwg©m I M ̈v‡÷avWvwg©m Gi ga ̈eZ©x ̄’v‡b Aew ̄’Z †Rjxi g‡Zv, ̄^”Q, w ̄’wZ ̄’vcK ̄Íi| †g‡mvwMøqvi KvR:  ‡g‡mvwMøqv †`n‡K mv‡cvU© Ki‡Z mnvqZv K‡i Ges GK ai‡bi Bjvw÷K K1⁄4vj wn‡m‡e KvR K‡i|  ‡g‡mvwMøqv `ywU †Kvl ͇̄ii wfwËiƒ‡c KvR K‡i|  mœvqy‡Kvl I ms‡e`x †KvlZš‘mg~n Ges †cwk-AveiYx †Kvl ms‡KvPbkxj gv‡qvdvBweaj aviY K‡i|  ‡g‡mvwMøqvq Aew ̄’Z †cwk-AveiYx †Kv‡li ms‡KvPbkxj gv‡qvdvBwea‡ji ms‡KvP‡b †`n ev Kwl©Kv Lv‡Uv nq| d‡j †`n euvKv‡bv m¤¢e nq| 2. wm‡j‡›Uib ej‡Z wK eyS? DËit- wbWvwiqv c‡e©i cavYx‡`i †`n MnŸi‡K wm‡j‡›Uib e‡j| wbWvwiqv c~Y©v1⁄2 cavYx‡Z wØ ̄Íix Z_v wØZ¡K wewkó| G‡`i †`‡ni †fZ‡i cak ̄Í MnŸiwU M ̈v‡÷avfv ̄..yjvi MnŸi ev wm‡j‡›Uib bv‡g cwiwPZ Ges GwU GKwU gvÎ wQ`a c‡_ evB‡i Db¥y3| Hydra-i †`‡ni †K‡›`a Aew ̄’Z I M ̈v‡÷avWvwg©‡m Ave„Z duvKv MnŸi‡K wm‡j‡›Uib e‡j| wm‡j‡›Uib‡K A‡bK mgq eøvBÛ MvU ev eøvBÛ m ̈vK ejv nq| Lv‡` ̈i ewnt‡Kvlxq cwicvK, Lv` ̈mvi, k¦mb, †iPb c`v_© GB GKwU gvÎ wQ`a w`‡q cwievwnZ nq| 3. nvBWavi ewnt‡Kvlxq cwicvK ej‡Z wK eyS? DËit- ‡Kvb wbw`©ó †Kv‡li Af ̈šÍ‡i cwicvK bv n‡q †Kv‡li evB‡i †Kvb bvjx ev _wji g‡a ̈ †h cwicvK msNwUZ nq Zv‡K ewnt‡Kvlxq cwicvK e‡j| nvBWavi wm‡j‡›Ui‡Y Lv` ̈ †c.Qvi m‡1⁄2 m‡1⁄2 gyLwQ`a eÜ n‡q hvq Ges AšÍtZ¡Kxq Mawš’‡Kvl ̧‡jv mwμq nq| †Kvl ̧‡jv eo I `vbv`vi n‡q D‡V Ges GbRvBg ¶iY K‡i| ca_‡g GbRvB‡gi cafv‡e wkKv‡ii g„Z ̈y N‡U| †`ncavPx‡ii caej ms‡KvPb- camvi‡Yi d‡j wkKviwU †QvU †QvU KYvq cwiYZ nq| G mgq AšÍtZ¡Kxq †Kv‡li d¬ ̈v‡Rjv mÂvwjZ n‡q Lv` ̈KYv‡K GbRvB‡gi mv‡_ fvjfv‡e wgwkaZ K‡i| Mawš’‡Kvl †_‡K wbtm„Z GbRvB‡gi cafv‡e Lv` ̈KYv cwicvK n‡Z _v‡K| †ccwmb wbtm„Z n‡q †cavwUb‡K cwj‡ccUvBW-G cwiYZ K‡i, Z‡e wjwcW I kK©iv Lv` ̈vs‡ki †Kv‡bv cwieZ©b nq bv| wbw`©ó †Kv‡li evB‡i Lv‡` ̈i G cwicvK wμqv‡K ewn‡Kvtlxq cwicvK e‡j| 4. wg‡_vRxweZv ej‡Z wK eyS? DËit- wg‡_vRxweZv wMaK kã Symbioum †_‡K G‡m‡Q| wMaK kã wmgev‡qv‡gi A_© n‡”Q Live Together. A_©vr GKmv‡_ _vKv‡K wmgev‡qvwmm e‡j| hLb `ywU wfbœ caRvwZfy3 Rxe Nwbôfv‡e mnve ̄’v‡bi d‡j ci ̄ú‡ii KvQ †_‡K DcK„Z nq, ZLb G ai‡bi mvnPh©‡K wg‡_vRxweZv e‡j| G Ae ̄’vq Rxe`ywU‡K wg‡_vRxex (Symbiont) ejv nq| wg‡_vRxweZv‡K Avevi Symbiosis Ges wg‡_vRxwe‡`i Symbiont I ejv nq| 5. M ̈v‡÷avfvmKyjvi MnŸi wK? DËit- †`‡ni Af ̈šÍ‡i Aew ̄’Z †h MnŸ‡i Lv‡` ̈i ewnt‡Kvlxq cwicvK N‡U Ges Lv` ̈mvi, k¦mb I †iPb c`v_© cwievwnZ nq e‡j G‡K M ̈v‡÷avfv ̄..yjvi MnŸi (gastrovascular cavity) ev cwicvK msenb MnŸi ejv nq| wbWvwiqv c~Y©v1⁄2 cavYx‡Z wØ ̄Íix Z_v wØZ¡K wewkó| G‡`i †`‡ni †fZ‡i cak ̄Í MnŸiwU M ̈v‡÷avfv ̄..yjvi MnŸi ev wm‡j‡›Uib bv‡g cwiwPZ Ges GwU GKwU gvÎ wQ`a c‡_ evB‡i Db¥y3| Lv‡` ̈i

cÖvYxi cwiwPwZt nvBWav  Practice Content 4 17. nvBWavi gyKy‡jv`Mg Kxfv‡e N‡U? DËit- gyKy‡jv`Mg cawμqv K‡qKUv avivevwnK av‡c N‡U| h_vt  nvBWavi †`nKv‡Ûi bx‡Pi w`‡K G‡±vWv‡g©i GK ev GKvwaK ̄’v‡bi B›Uviw÷wkqvj †Kvl gvB‡Uvwmm c×wZ‡Z evievi wefvwRZ nq| d‡j G mKj ̄’v‡b wKDwUK‡ji bx‡P GKUv K‡i wb‡iU I ùxZ cae„w× ev Ask MwVZ nq|  GB cae„w× ̧‡jv μgk AvKv‡i eo n‡Z _v‡K Ges Gi wfZ‡i gvZ„ nvBWavi wm‡j‡›Uib camvwiZ nq| d‡j cae„w×wU GKUv wØ ̄Íi wewkó dvcv I bjvKvi MVbiZ gyKy‡j cwiYZ nq|  GB MVbZ gyKy‡ji AMacav‡šÍ Gici G‡K G‡K nvB‡cv‡÷vg, Kwl©Kv Ges gyLwQ`a MwVZ nq|  cavq GKB mv‡_ MVbiZ gyKyj I gvZ„nvBWavi ms‡hvM ̄’‡j GKUv LuvR MwVZ nq Ges Zv μgkt e„w× †c‡Z _v‡K|  gyLwQ`a MwVZ nevi cvkvcvwk c~Y©v1⁄2 `kvi gyKy‡j LvRwU MfxiZi n‡Z n‡Z GK mgq gvZ„ nvBWavi †`n †_‡K wewQbœ n‡q hvq| 18. nvBWavi †bgv‡UvmvBU I †bgv‡Uvwm÷ Gi g‡a ̈ cv_©K ̈ wK? DËit- wb‡WvmvBU I †bgvv‡Uvwm‡÷i g‡a ̈ cv_©K ̈ cv_©‡K ̈i welq wb‡WvmvBU ‡bgv‡Uvwm÷ 1| Ae ̄’vb wbWvwiqv ce©fy3 cavwY‡`i GwcWvwg©‡mi †cwk-AveiYx †Kv‡li duv‡K ev wfZ‡i| wb‡WvmvB‡Ui ùxZ ga ̈vs‡k| 2| MVb wØ ̄Íix AveiY, wb‡Wvwmj, AcviKyjvg, ‡bgv‡Uvwm÷, mvB‡UvcøvRg, wbDwK¬qvm BZ ̈vw` wb‡q MwVZ| duvcv I c ̈vuPv‡bv m~ÎKhy3 GKwU †MvjvKvi ev wW¤^vKvi _wj we‡kl| 3| AveiY mRxe cøvRgv‡gg‡eab w`‡q MwVZ| wbR©xe KvBwUb wbwg©Z 4| cÖK...wZ GwcWvwg©‡mi GKcaKvi we‡kl ai‡bi †Kvl| wb‡WvmvBU †Kv‡li GKwU Awe‡”Q` ̈ Ask| 5| KvR †bgv‡Uvwm÷ aviY K‡i| wkKvi aiv, AvZ¥i¶v, Pjb I AvuK‡o ai‡Z mvnvh ̈ K‡i| 19. nvBWavi nvgv ̧wo I wWMevwR Pjb Gi g‡a ̈ cv_©K ̈ wK? DËit- jywcs/nvgv ̧wo mvgvimwës/wWMevRx Pjb 1. GwU Hydra-i we‡kl Pjb c×wZ| 1. GwU Hydra-i mvaviY Pjb c×wZ| 2. GwU gš’i MwZm¤úbœ cawμqv| 2. GwU `aæZ MwZm¤úbœ cawμqv| 3. G c×wZ‡Z cv`-PvKwZ KL‡bv gvwUi Dc‡i D‡V Av‡m bv| 3. G c×wZ‡Z cv`-PvKwZ gvwUi Dc‡i D‡V Av‡m| 4. G c×wZ‡Z Hydra KL‡bv Kwl©Kvi Dci fi w`‡q `uvovq bv| 4. G c×wZ‡Z Hydra GKevi Kwl©Kv Ges GKevi cv`- PvKwZi Dci fi w`‡q `uvovq| 5. Kwl©Kv me©`v MwZc‡_i w`‡K _v‡K| 5. G‡¶‡Î GKevi Kwl©Kv Ges Av‡iKevi cv`-PvKwZ MwZc‡_i w`‡K _v‡K| 6. G c×wZ‡Z GKevi Pj‡Z GKwU gvÎ jyc •Zwi nq| 6. G c×wZ‡Z GKevi Pj‡Z `ywU jyc •Zwi nq| 7. G c×wZ‡Z GKevvi Pj‡Z Hydra Zvi †`‡ni •`‡N ̈©i A‡a©K `~iZ¡ AwZμg K‡i| 7. G c×wZ‡Z GKei Pj‡b Hydra Zvi †`‡ni •`‡N ̈©i wØ ̧Y `~iZ¡ AwZμg K‡i| 8. `xN©c_ AwZμg Kivi Rb ̈ G c×wZ Abym„Z nq| 8. Aí c_ AwZμg Kivi Rb ̈ G c×wZ Abym„Z nq| 20. nvBWavi ̄^fve †Kvb ai‡bi? DËit- Hydra n‡”Q Cnidaria (wbWvwiqv) c‡e©i GKwU RjR cavYx| Gi †`n mij, A_©vr Aí K‡qKwU A1⁄2 w`‡qB nvBWav Zvi †`‡ni me KvR K‡i _v‡K| GwU wØ ̄Íix cavYxi GK Av`k© D`vniY| nvBWav Ab ̈ †Kv‡bv cavbx †L‡q Rxeb aviY K‡i, ZvB G‡K gvsmvkx cavbx ejv nq| nvBWavi GKwU caavb ̄^fve n‡jv, ¶yavZ© Ae ̄’vq Gi †`n I Kwk©Kv, me‡P‡q †ewk camvwiZ n‡q cvwb‡Z `yj‡Z _v‡K| nvBWav Zvi †`‡n _vKv Kwl©Kvi mvnv‡h ̈ Lv` ̈ ManY K‡i _v‡K| 21. Hydra Gi GwcWvwg©‡mi †Kvlmg~‡ni bvg wjL| DËit- Hydra Gi GwcWvwg©‡mi †Kvlmg~n  †cwk-AveiYx †Kvl  B›Uviw÷wkqvj †Kvl  ms‡e`x †Kvl  mœvqy †Kvl  Mawš’ †Kvl  Rbb †Kvl Ges  wb‡WvmvBU 22. †g‡mvwMøqv ej‡Z wK eyS? DËit- ‡g‡mvwMøqv ̄ÍiwU †`n Ges Kwl©Kv Dfq ̄’v‡b Qov‡bv _v‡K| Z‡e Kwl©Kvq me‡P‡q cvZjv Ges cv` PvKwZ‡Z me‡P‡q †ewk cyiæ nq| †g‡mvwMøqvi G ai‡bi web ̈vm cv`-PvKwZi AwZwi3 hvwš¿K camviY cawZ‡iv‡a mvnvh ̈ K‡i Ges Kwl©Kv‡K AwaKZi bgbxqZv ca`vb K‡i| nvBWavi‡g‡mvwMøqv cavq 0.1 k~b ̈ `kwgK GK gvB‡μvwgUvi cyiæ nq Ges Dfq ͇̄ii †Kvl †g‡mvwMøqv MV‡b Ask ManY K‡i| 23. †bgv‡Uvwm÷ KZ caKvi I Kx Kx? DËit- wbw¶ß m~·Ki •ewk‡ó ̈i Dci wfwË K‡i weÁvbx fvb©vi 1965 mv‡j, wbWvwiqv RvZxq cavwY‡`i †`n †_‡K, 23 ai‡bi †bgv‡Uvwm÷ kbv3 K‡i‡Qb| Gi g‡a ̈ Pvi ai‡bi †bgvUwm÷ nvBWavq cvIqv hvq|  w÷‡bvwUj ev †cwbUa ̈v›U  fj‡f›U †Wm‡gwbg  †÷ac‡Uvwjb iæwUb ̈v›U ev n‡jvwUaKvm AvB‡mvivBRv  †÷awiIwjb MøwUb ̈v›U ev A ̈vwUaKvm AvB‡mvivBRv 24. Hydra-i †bgv‡Uvwm÷ Gi myÎ wb‡¶c c×wZ wjL| DËit- †bgv‡Uvwm‡÷i m~Î wb‡¶‡ci †K.kj A‡bKUv e›`y‡Ki wUaMv‡ii g‡Zv| ‡bgv‡Uvwm‡÷i myÎK wb‡¶c GKBmv‡_ GKwU ivmvqwbK I hvwš¿K cawμqv| wkKv‡ii ev kÎæi mÜvb A_ev Ab ̈ †h‡Kv‡bv Kvi‡Y wb‡WvmvBU DÏxß n‡j G cawμqvwU ïiæ nq| †Kv‡bv wkKvi Kwl©Kvi wbKUeZ©x n‡j wkKvi-‡`‡ni ivmvqwbK c`v‡_©i cafv‡e †bgv‡Uvwm÷ cavPx‡ii cvwb‡f` ̈ ¶gZv †e‡o hvq| G‡Z Lwji wfZ‡i `aæZ cvwb ca‡ek Kivq wfZ‡ii AwfmaewYK PvcI †e‡o hvq| Gmgq wkKvi wb‡WvmvB‡Ui wb‡Wvwmj ̄úk© KivgvÎ Gi AcviKyjvg Ly‡j hLb `aæZ cvwb wfZ‡i ca‡ek Kivq