Page 11 - Zoology

†Kvl‡K wµ÷vjvBb †KvY †Kvl e‡j| †Kvl¸‡jvi cwiwai cÖvšÍ cÖk¯Í
Ges wfZ‡ii cÖvšÍ µgk miæ|
KvR t wµ÷vjvBb †KvY‡K wN‡i iv‡L Ges G‡`i ¶iY †_‡K wµ÷vjvBb †KvY MwVZ nq|
4| wµ÷vjvBb ‡KvY (Crystalline cone) t PviwU wµ÷vjvBb †KvY †Kvl Øviv cwie„Z ¯^”Q, cÖwZmiYkxj, †gvPvK…wZ
AskwU‡K wµ÷vjvBb ‡KvY e‡j|
KvR t cÖwZmiYkxj A½ wnmv‡e GwU KvR K‡i|
5| iÄK AveiY (Pigment sheath) t wµ÷vjvBb †KvY †Kvl¸‡jv‡K wN‡i GKwU Kv‡jv i‡Oi AveiY _v‡K| Av‡jvi
ZxeªZv Abyhvqx G AveiY msKzwPZ I cÖmvwiZ nq|
KvR t Zxeª Av‡jv‡Z G AveiY cÖmvwiZ n‡q †KvY †Kvl¸‡jv‡K m¤ú~Y©iƒ‡c Ave„Z K‡i, Avevi g„`y Av‡jv‡Z msKzwPZ
n‡q AvswkK Db¥y³ iv‡L|
6| ‡iwUbyjvi †Kvl (Retinular cell) t †KvY †Kvl¸‡jvi wb‡P e„ËvKv‡i mw¾Z mvZwU `xN©vKvq ‡iwUbyjvi †Kvl
Aew¯’Z| G‡`i wbDwK¬qvm †KvY †Kvl msjMœ cÖv‡šÍ Aew¯’Z| G¸‡jv GKw`‡K †KvY †Kvl¸‡jvi mv‡_ Ges Ab¨w`‡K mœvqy Zš‘i
mv‡_ hy³ _v‡K|
KvR t ‡iwUbyjvi †Kvl wbtm„Z i‡m i¨ve‡Wvg MwVZ nq|
7| i¨ve‡Wvg (Rhabdome) t ‡iwUbyjvi †Kvl¸‡jvi ga¨¯’‡j Aew¯’Z Ges G †Kvl¸‡jv KZ©„K wbtm„Z im Øviv MwVZ
`ÛvK…wZ, A‡Kvlxq , j¤^v I ¯^”Q , cÖwZmiYkxj Ask|
KvR t i¨ve‡Wv‡g cÖwZwe¤^ MwVZ nq|
8| †iwUbvj AveiY (Retinal sheath) t GwU ‡iwUbyjvi †Kvl‡K wN‡i iÄKgq †Kv‡l MwVZ Kv‡jv c`©vi GKwU AveiY|
KvR t IgvwUwWqvg‡K ci¯úi †_‡K c„_K iv‡L| G c`©vi iÄK c`v_© Av‡jvi ZxeªZvi Dci wbf©i K‡i msKzwPZ I
cÖmvwiZ n‡q ‡iwUbyjvi †Kvl¸‡jv‡K AvswkK ev m¤ú~Y© Ave„Z K‡i iv‡L|
9| wfwË c`©v (Basement membrane) t IgvwUwWqvg †h cvZjv c`©vi Dci Ae¯’vb K‡i Zv‡K wfwË c`©v e‡j|
KvR t IgvwUwWqv‡K aviY K‡i|
10| mœvqy Zš‘ (Nerve fibres) t cÖwZwU ‡iwUbyjvi †Kvl †_‡K mœvqyZš‘ †ewo‡q AcwUK mœvqyi mv‡_ hy³ nq|
KvR t IgvwUwWqvq M„nxZ e¯‘i cÖwZwe‡¤^i ms‡KZ gw¯Í‡®‹ †cÖiY K‡i|

Nvmdwos D¾j Av‡jv‡Z G‡cvwRkb cÖwZwe¤^ Ges w¯ÍwgZ Av‡jv‡Z mycvi cwRkb cÖwZwe¤^ m„wó K‡i| wb‡gœ G‡`i eY©bv Kiv
n‡jvt
1) mycvi cwRkb cÖwZwe¤^ (Super position Image)t
w¯ÍwgZ Av‡jv‡Z Giæc cÖwZwe¤^ m„wó nq| Gmgq AvBwim wcM‡g›U AveiYx
m¤§yL w`‡K msKzwPZ nq d‡j wµ÷vjvBb †Kv‡Yi AwaKvsk Abve„Z n‡q c‡o|
`k©bxq e¯‘ n‡Z j¤^fv‡e cwZZ Av‡jvK iwk¥ GKwU IgvwUwWqv‡gi wµ÷vjvBb
†Kv‡Yi g‡a¨ w`‡q i¨ve‡Wv‡g †cuŠ‡Q| wKš‘ GKB e¯‘ n‡Z Zxh©Kfv‡e AvMZ
Av‡jvKiwk¥ cv‡k¦©i IgvwUwWqv‡gi wµ÷vjvBb †Kv‡Yi Abve„Z As‡ki g‡a¨ w`‡q
GKB i¨ve‡Wv‡g ‡cuŠQvq|
d‡j e¯‘i wewfbœ As‡ki cÖwZwe¤^¸wj G‡K Ac‡ii Dci covq e¯‘wUi GKwU A¯úó cÖwZwe¤^ m„wó nq| GBiyc cÖwZwe¤^‡K
mycvi cwRkb cÖwZwe¤^ e‡j|

2) G‡cvwRkb cÖwZwe¤^ (Aposition Image) t
D¾j Av‡jv‡Z Giyc cÖwZwe‡¤^i m„wó nq| G‡¶‡Î AvBwim wcM‡g›U
AveiYx wµ÷vjvBb †Kv‡Yi bx‡Pi w`‡K Qwo‡q Zvi Pvwiw`‡K GKwU Kv‡jv
c`©vi m„wó K‡i| d‡j GKwU IgvwUwWqvg †KejgvÎ wbR¯^ KwY©qv n‡Z AvMZ
cÖwZdwjZ iwk¥B MÖnb Ki‡Z cv‡i|
GB †¶‡Î m„ó cÖwZwe¤^ A‡bKUv †gvRvBK Kiv cv_‡ii gZ g‡b nq
e‡j G‡K †gvRvBK cÖwZwe¤^ ejv nq|

mb&Rq P›`ª gÛj

weGmwm(Abvm©)-1g †kÖYx, GgGmwm-1g †kÖYx
mnKvwi Aa¨vcK, Dw™¢`weÁvb wefvM
RqcyinvU miKvwi K‡jR, RqcyinvU
sanjoymondal1980@gmail.com

01713747235

sanjoy chandra mondal, Assistant Professor, botany, joypurhat govt. college, joypurhat. 5