Page 10 - Zoology

wn‡gvwmj MnŸ‡i wn‡gvwj‡çi g‡a¨ wbgw¾Z _v‡K|
Ab¨cÖvšÍ †cŠwóKbvwji MnŸ‡i Db¥y³|
MVb t g¨vjwcwRqvb bvwjKv GK¯Íi wewkó
Gwc‡_wjqvg †Kv‡l MwVZ| evB‡ii w`‡K GKwU †em‡g›U
c`©vq Ave„Z _v‡K Ges †fZ‡ii w`‡K we‡kl ‰ewkó¨c~Y© eªvk eW©vi m„wó K‡i|
KvR t Gwc‡_wjqvg †Kvl BDwiK GwmW, BD‡iU cÖf„wZ eR©¨ c`v_© wn‡gvwm‡ji wn‡gvwjç †_‡K †kvlY K‡i Ges c‡i
BDwiK Gwm‡Wi `vbv wn‡m‡e A‡š¿ gy³ K‡i| c‡i GB `vbv`vi `~wlZ c`v_© g‡ji mv‡_ cvqyc‡_ wb®ŒvšÍ nq|

cÖkœ t Nvmdwos Gi cÖRbb cÖwµqv I iƒcvšÍi eY©bv Ki|

Nvmdwos Gi cÖRbb cÖwµqv t bZzb cÖRbb¶g eskai m„wói cÖwµqv‡K cÖRbb e‡j| KZK¸‡jv av‡ci gva¨‡g eY©bv Kiv hvq-
‡hŠb wgjb t MÖx‡®§i †klw`‡K Nvmdwos Gi †hŠb wgjb n‡q _v‡K|
wb‡lK t †hŠb wgj‡bi d‡j ïµvYy I wW¤^vby wgwjZ n‡q wb‡lK m¤úbœ K‡i|
wWgcvov t wgj‡bi ci †_‡K wKQyw`b ci ci ¯¿x Nvmdwos 3-5 wg:wg: j¤^v, ev`vwg is‡qi wWg cvo‡Z ïiæ K‡i|
kirKv‡j wWgcvov Ae¨vnZ _v‡K| ¯¿x dwos IwfcwRU‡ii mvnv‡h¨ 10 †mwg Mfxi MZ© K‡i Gi †fZ‡i ¸”QvKv‡i 20wU wWg
cv‡o| GKwU ¯¿x dwos Gfv‡e 10wU ¸‡”Q †gvU 200wU wWg cv‡o| wWg cvovi ci cyiæl I ¯¿x cÖvYx gviv hvq|
cwiùzUb t Nvmdwos Gi wW¤^vYy †m‡›Uªv‡jwm_vj ai‡bi A_©vr Gi Kzmyg †K‡›`ª mxgve×| wbwl³ wW¤^vYyi wK¬‡fR
(wefvRb) ïiæ nIqvi ci cÖvq wZb mßvn a‡i cwiùzUb P‡j| kxZKv‡j cwiùzUb eÜ _v‡K| G mgqKvjwU WvqvcR
(diapause) bv‡g cwiwPZ| kxZKvjxb cÖwZK‚jZv cvi n‡j em‡šÍi AvMg‡b Avevi e„w× ïiæ nq Ges AwZ ¶z`ªvKvq Nvmdwos
Gi Rb¥ nq|
iƒcvšÍi t hLb GKwU 僇Yi c~Y©v½ `kv cÖvwß K‡qKwU ch©vqµwgK cwieZ©bxq av‡ci gva¨‡g N‡U ZLb G ai‡bi 僇YvËi
cwiùzUb‡K iƒcvšÍi e‡j| iæcvšÍi `yB ai‡bi n‡q _v‡K-
Am¤ú~Y© iæcvšÍi t AvKvi, eY©, Wvbv I Rbb A½ Qvov †h iæcvšÍ‡i AcwiYZ Ae¯’vq †Kvb cÖvYx c~Y©v½ cÖvYx‡Z iæc †bq,
G ai‡bi iæcvšÍi‡K Am¤ú~Y© iæcvšÍi e‡j| Am¤ú~Y© iæcvšÍ‡ii wkï Ae¯’vq cÖvYx‡K wbç e‡j| D`vniY- Nvmdwos I †Zjv‡cvKvi
iæcvšÍi|
m¤ú~Y© iæcvšÍi t †h iæcvšÍ‡i wkï I c~Y©v½ cÖvYxi g‡a¨ †Kv‡bv Avw½K wgj _v‡K bv Ges e¨vcK cwieZ©‡bi gva¨‡g wkï
cÖvYx c~Y©v½ Ae¯’vcÖvß nq, †m ai‡bi iæcvšÍi‡K m¤ú~Y© iæcvšÍi e‡j| D`vniY- †gŠgvwQ I cÖRvcwZi iæcvšÍi|
Nvmdwos Gi iƒcvšÍi †nwg‡gUv‡evjvm ai‡bi| KviY G‡`i AcwiYZ wbç AvswkK cwiùzU‡bi gva¨‡g c~Y©v½ Nvmdwos G
cwiYZ nq| wWg dz‡U †h ZiyY Nvmdwos †ewi‡q Av‡m Zv‡K wbç e‡j|
wb‡çi †`‡ni mvaviY MVb c~Y©v½ Nvmdwos Gi gZ , Z‡e Giv AvKv‡i †QvU , iO nvjKv , Rbb A½ AcwiYZ Ges Wvbv AwZ
¶z`ª ÔWvbv c¨vWÕ wnmv‡e Dcw¯’Z _v‡K| wbç Lv`¨ MÖnb K‡i ax‡i ax‡i e„w× †c‡Z _v‡K| †`n k³ wKDwUKj Øviv Ave„Z _vKvq
†`‡ni ¯^vfvweK e„w×i Rb¨ wbç wbw`©ó mgq AšÍi AšÍi †Lvjm e`jvq| †Lvjm e`jv‡bvi G cÖwµqv‡K †Lvjm †gvPb (Moulting
ev Ecdysis) e‡j| †Lvjm †gvPb AMÖe¶xq MÖwš’i GKWvBmb ni‡gv‡bi cÖfv‡e wbqwš¿Z nq| †Lvjm †gvP‡bi AšÍeZ©x Ae¯’v‡K
Bb÷vi e‡j Ges cwiZ¨³ †Lvjm‡K G·ywf e‡j| cÖwZevi †Lvjm †gvP‡bi ci wbç I Wvbv e„w× m¤úbœ nq| wbç 5 evi †Lvjm
†gvPb K‡i| †klev‡ii †Lvjm †gvP‡bi ci Wvbvi MVb m¤ú~Y© nq Ges wbç ZLb c~Y©v½ Nvmdwos G cwiYZ nq| Gfv‡e
Nvmdwos Gi Rxeb BwZnvm wWg, wbç Ges c~Y©v½ cÖvYx GB wZbwU Aa¨v‡qi gva¨‡g m¤úbœ nq|

cÖkœ t IgvwUwWqvg wK? Nvmdwos Gi IgvwUwWqv‡gi j¤^‡”Q‡`i wPwýZ wPÎmn wewfbœ As‡ki MVb I KvR D‡jøL Ki| Gi `k©b
†KŠkj eY©bv Ki|
DËi t IgvwUwWqvg t Nvmdwos Gi cyÄvw¶i ¯^vaxb I ¯^Zš¿fv‡e
cÖwZwe¤^ MV‡b m¶g cÖwZwU GKK‡K IgvwUwWqvg e‡j| Nvmdwos Gi
cyÄvw¶i cÖwZwU‡Z cÖRvwZ‡f‡` 1200-1800 ev GiI AwaK
IgvwUwWqvg _v‡K| cÖwZwU IgvwUwWqvg `kwU cÖavb Ask wb‡q MwVZ|
wb‡gœ GKwU IgvwUwWqvg-Gi wewfbœ As‡ki MVb I KvR eY©bv Kiv
n‡jv|
1| KwY©qv (Cornea) t IgvwUwWqv‡gi me‡P‡q evB‡ii
wKDwUKj MwVZ ¯^”Q, eY©nxb, DËj I Qq‡KvYvK…wZ AveiYx‡K
KwY©qv e‡j| G‡K †jÝI ejv nq|
KvR t KwY©qvi gva¨‡g Av‡jvKiwk¥ IgvwUwWqv‡g cÖ‡ek K‡i|
2| KwY©qv‡Rb †Kvl (Corneagen cell) t KwY©qvi wb‡P
KwY©qv‡Rb †Kvl bv‡g wbDwK¬qvmhy³ `ywU P¨vÞvK…wZi ‡Kvl cvkvcvwk
Ae¯’vb K‡i|
KvR t G †Kvl¸‡jvi wbtmiY †_‡K KwY©qv m„wó nq|
3| wµ÷vjvBb †KvY †Kvl (Crystalline cone cell) t
KwY©qv‡Rb †Kvl¸‡jvi wb‡P Aew¯’Z wbDwK¬qvmhy³ j¤^vK…wZi PviwU
sanjoy chandra mondal, Assistant Professor, botany, joypurhat govt. college, joypurhat. 4