*SN257*

SN – 257

V Semester B.Sc. Examination, November/December 2013 (New Scheme) (2012-13 and Onwards) ZOOLOGY – VI Developmental Biology and Organic Evolution Time : 3 Hours

Max. Marks : 60/70 (2012-13 Only/2013-14 & Onwards)

Instructions : 1) Candidates 2013 onwards should answer all Sections A, B, C and D. 2) Candidates of 2012-13 should answer Sections A, B and C only. 3) Draw diagrams wherever necessary. 4) Answer should be completely in Kannada or English. 5) 70-2013-14 and onwards. 6) 60-2012-13 Only.

ÓÜãaÜ®æWÜÙÜá : 1) 2013 ÖÝWÜã ®ÜíñÜÃÜ¨Ü Ë¨Ý¦ìWÜÙÜá A, B, C ÊÜáñÜᤠD GÇÝÉ Ë»ÝWÜWÜÙÜ®Üá° EñܤÄÓܸæàPÜá. 2) 2012-13 ÃÜ Ë¨Ý¦ìWÜÙÜá A, B ÊÜáñÜᤠC Ë»ÝWÜWÜÙÜ®Üá° ÊÜÞñÜÅ EñܤÄÓܸæàPÜá. 3) AÊÜÍÜÂ˨æªvæ bñÜÅ ŸÃæÀáÄ. 4) EñܤÃÜWÜÙÜá ÓÜí±Üä|ìÊÝX PܮܰvÜ A¥ÜÊÝ BíWÜÉ »ÝÐæ¿áÈÉÃÜÈ. Ë»ÝWÜ & G I. PæÙÜX®Ü ¿ÞÊÜâ¨Ý¨ÜÃÜã I¨Üá ±ÜÅÍæ°WÜÚWæ EñܤÃÜ ŸÃæÀáÄ. (5×3=15) 1) ²Åà&´ÝÃæ¾àÐÜ®… ԨݜíñÜÊÜ®Üá° ËÊÜÄÔ. 2) AívÜ&gÃÝ¿áá gñÜÌ¨Ü ŸWæY ÆZá q±Ü³~ ŸÃæ¨Üá E¨ÝÖÜÃÜOæ Pæãw. 3) PÝqÈvæ®ÜÄ gÃÝ¿ááÊÜ®Üá° E¨ÝÖÜÃÜOæ ÓÜ×ñÜ ÊÜ~ìÔ. 4) ÖæçvÝÅÀáv… PÜáoáPÜá PÜ|ÊÜíñÜWÜÙÜÈÉ ®Üvæ¿ááÊÜ ±Üâ®ÜÃÜáñܳ £¤¿á®Üá° ËÊÜÄÔ. 5) ®ÝÊÜå…ì B´… Ä¿ÞPÜÒ®… Jí¨Üá ¸ÝÖÜ Äà£¿á ±ÝÉÔrÔq Gí¨Üá ÓÜíQұܤÊÝX ËÊÜÄÔ. 6) ÓÜíñÝ®æãàñܳ £¤ ¸æà±ÜìvÜáËPæ¿á ŸWæY ÆZáq±Ü³~ ŸÃæÀáÄ. 7) ±ÜÙ¿ æ ááÚPæWÙÜ Ü ©®ÝíPÜ ¯WÜ©àPÜÃ| Ü WæãÚÓÜÆá ŸÙÜÓáÜ ÊÜ ±æäpÝÂÔ¿áí ÊÜáñÜᤠBWÜ쮅 Ë«Ý®ÜWÙÜ ®Ü áÜ ° ÊÜ~ìÔ. P.T.O.

SN – 257

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*SN257*

PART – A I. Answer any five of the following :

(5×3=15)

1) Explain pre-formation theory. 2) Write a brief note on ovoviviparity. Give an example. 3) Describe the cotyledonary type of placenta with example. 4) Explain regeneration in Hydroid coelenterata. 5) Briefly explain norm of reaction as a phenotypic plasticity. 6) Write short notes on reproductive isolation. 7) Describe potassium-argon method of dating of fossils.

Ë»ÝWÜ & ¹ II.

PæÙÜX®Ü ¿ÞÊÜâ¨Ý¨ÜÃÜã I¨Üá ±ÜÅÍæ°WÜÚWæ EñܤÃÜ ŸÃæÀáÄ.

(5×5=25)

1)

ËÃÝÂ|á Eñܳ £¤ ÊÜáñÜᤠAívÝ|á Eñܳ £¤¿áÈÉÃÜáÊÜ ÊÜÂñÝÂÓÜWÜÙÜ®Üá° ±ÜqrÊÜÞw.

2)

ÊæãÓÝÀáP… ÊÜáñÜᤠÃæWÜáÂÇæàqʅ ÊæãpærWÜÙÜ ®ÜvÜá訆 ÊÜÂñÝÂÓÜWÜÙÜ®Üá° ±ÜqrÊÜÞw E¨ÝÖÜÃÜOæ Pæãw.

3)

Ë»Üg®æ¿á®Üá° ÊÝÂTݯÔ. PÜíÓÜ ÖÝWÜã £ÃÜáWÜ~ Ë»Üg®æWÜÙÜ®Üá° E¨ÝÖÜÃÜOæ ÓÜ×ñÜ ËÊÜÄÔ.

4)

Pܱ泿áÈÉ ®Üvæ¿ááÊÜ ¨æç×PÜ ÖÝWÜã ÍÝÄàÄPÜ ÃÜã±Ü ±ÜÄÊÜñÜì®æ¿á®Üá° ÊÜ~ìÔ.

5)

ÔÌàÊÜᮅ ÊÜáñÜᤠÊÜÞ®…WæãDžx®Ü PÜÔÊÜÞvÜáÊÜ ±ÜÅÁãàWÜÊÜ®Üá° ËÊÜÄÔ.

6)

¯ÁãàvÝË쮅 ÊݨÜÊÜ®Üá° ËÊÜÄÔ.

7)

AÇæãà±ÝÂqÅP… ÊÜáñÜᤠÔí±ÝÂqÅP… ԖÔÁáàÐÜ®… PÜáÄñÜá ÆZáq±Ü³~ ŸÃæÀáÄ.

*SN257*

-3-

SN – 257

PART – B II. Answer any five of the following :

(5×5=25)

1) Enumerate the differences between Spermatogenesis and Oogenesis. 2) Differentiate between Mosaic and Regulative eggs with example. 3) Define cleavage. Explain radial and spiral cleavage with relevant example. 4) Discuss the Morphological and analomical changes in metamorphosis of frog. 5) Explain transplantation experiment of Spemann and Mangold. 6) Explain Neo-Darwinism. 7) Write notes on Allopatric and Sympatric speciation.

Ë»ÝWÜ & Ô III. PæÙÜX®Ü ¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜá ±ÜÅÍæ°WÜÚWæ EñܤÃÜ ŸÃæÀáÄ. (2×10=20) 1) »ÜãÅ| PÜoárËPæ¿á QÅÁá¿áÈÉ ±ÜÅ«Ý®ÜÊÝX ®Üvæ¿ááÊÜ QÅÁáWÜÙÜ®Üá° ËÊÜÄÔ. 2) Aí¨ÜÊÝ¨Ü bñÜŨæãí©Wæ Bíµ¿ÞQÕ®… ¸ÝÉÓÜárÇÝÊÜ®Üá° PÜ±æ³¿á ¸ÝÉÓÜárÇݨæãí©Wæ ÖæãàÈÔ ŸÃæÀáÄ. 3) AíWÝíÍÜ A«Ü¿á®Ü¨Ü B«ÝÃÜ¨Ü ÊæáàÇæ gÃÝ¿ááWÜÙÜ ÃÜaÜ®æ¿á®Üá° ÓÜãPܤ bñÜŨæãí©Wæ ËÊÜÄÔ. 4) ¸ÝÖÜ A«Ü¿á®Ü ÊÜáñÜᤠ»ÜãÅ| A«Ü¿á®Ü¨Ü ÓÝQÒWÜÙÜá ËPÝÓÜÊÜ®Üá° ÖæàWæ ±ÜâÑuàPÜÄÓÜáñܤÊæí¨Üá ËÊÜÄÔ. Ë»ÝWÜ & w (2013 ÖÝWÜã ®ÜíñÜÃÜ¨Ü Ë¨Ý¦ìWÜÙÜá PÜvÝx¿áÊÝX EñܤÄÓܸæàPÜá) IV.

PæãàÚ¿áÈÉ ®Üvæ¿ááÊÜ WÝÂÓÜáóÇÝ QÅÁá¿á®Üá° ÊÜ~ìÔ. A¥ÜÊÝ BÓÝóÇæದPÜӅ ÊÜáñÜᤠPæãÅÊÜÞÂWÜ°®… ÊÜÞ®ÜÊÜÃÜ ËÎÐÜr ÆPÜÒ|WÜÙÜ®Üá° ŸÃæÀáÄ.

10

SN – 257

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*SN257*

PART – C III. Answer any two of the following :

(2×10=20)

1) Illustrate the major events that occur during fertilization. 2) Give a comparative account of blastula of amphioxus and frog. Support your answer with labelled diagram. 3) Give an account of palcental types based on histological structure with suitable diagrams. 4) Explain morphological and serological evidences in support of organic evolution. PART – D (Compulsory for the candidates of 2013). IV. Describe the process of gastrulation in chick. OR Mention the salient features of Australopithecus and cromagnon man. ————————

(1×10=10)

*SN257*

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SN – 257

V Semester B.Sc. Examination, November/December 2013 (Semester Scheme) (Prior to 2012-13) (Old Scheme) ZOOLOGY – VI Cell Biology, Immunology and Environmental Biology Time : 3 Hours

Max. Marks : 60

Instructions : 1) Draw diagrams wherever necessary. 2) Answers should be completely in Kannada or English.

ÓÜãaÜ®æWÜÙÜá : 1) AÊÜÍÜÂ˨æªvæ bñÜÅ ŸÃæÀáÄ. 2) EñܤÃÜWÜÙÜá ÓÜí±Üä|ìÊÝX PܮܰvÜ A¥ÜÊÝ BíWÜÉ »ÝÐæ¿áÈÉÃÜÈ. Ë»ÝWÜ & G I.

D PæÙÜPÜívÜ ¿ÞÊÜâ¨Ý¨ÜÃÜã I¨ÜPæR EñܤÄÔ. 1) ÓÝÅÊÜÓݧ ÓÜãPÜÒ$¾¨ÜÍÜìPÜ¨Ü ñÜñÜÌÊÜ®Üá° ËÊÜÄÔ. 2) ÓæíqűÜäÂi®Ü E±ÜÁãàWÜWÜÙÜ®Üá° £ÚÔ. 3) ±ÝÉÔrP… ÓÜgìÄ Gí¨ÜÃæà®Üá ? 4) ±ÜÄÓÜÃÜ ÍÝÓÜ÷¨Ü ±ÝÅÊÜááSÂñæ £ÚÔ. 5) ñÜvæ AíÍÜWÜÙÜ ñÜñÜÌÊÜ®Üá° ËÊÜÄÔ. 6) ÓÜÓÜ ±ÜÄÖÝÃÜ¨Ü ŸWæY ÆZá q±Ü³~ ŸÃæÀáÄ. 7) ÊÜ®ÜÂiàË ÓÜíÃÜPÜÒOæ¿áÈÉ ñæãvÜXÃÜáÊÜ ÊÜáãÃÜá ŸÖÜáÊÜááS ÓÜíÓæ§WÜÙÜ®Üá° £ÚÔ.

(5×3=15)

PART – A I. Answer any five of the following : 1) Explain the principles of phase contrast microscope. 2) Give the applications of centrifuge. 3) What is plastic surgery ? 4) Mention the scope of ecology 5) Explain the principles of limiting factor. 6) Write a note on phytoremediation. 7) Name any three major organisations involved in wildlife conservation.

(5×3=15)

SN – 257

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*SN257*

Ë»ÝWÜ & ¹ II.

D PæÙÜPÜívÜ ¿ÞÊÜâ¨Ý¨ÜÃÜã I¨ÜPæR EñܤÄÔ. 1)

¦àÈpæãàQ Gí¨ÜÃæà®Üá ? E¨ÝÖÜÃÜOæÁãí©Wæ ËÊÜÄÔ.

2)

AŸáì«ÜPÝÄWÜÙÜ WÜá|ÆPÜÒ|WÜÙÜ®Üá° £ÚÔ.

3)

Hv…Õ Gí¨ÜÃæà®Üá ? C¨Üá ÖÜÃÜvÜáÊÜ Äࣿá®Üá° ËÊÜÄÔ.

4)

Pݯì¿Þ PÜÔÊÜÞvÜáËPæ Gí¨ÜÃæà®Üá ?

5)

ËÊÜÄÔ :

(5×5=25)

G) ÎàñÜÃÜPܤ ±ÝÅ~ ¹) ¨Üᣠ¯¿áñÜPÝÈPÜ 6)

ÓÜÖÜiàÊÜñÜÌ Gí¨ÜÃæà®Üá ? E¨ÝÖÜÃÜOæÁãí©Wæ ËÊÜÄÔ.

7)

ÖÜÔÃÜáÊÜá®æ ±ÜÄOÝÊÜá¨Ü ŸWæY ÓÜíQұܤ q±Ü³~¿á®Üá° ŸÃæÀáÄ. PART – B

II. Answer any five of the following : 1) Define Theletoky. Explain with an example. 2) Mention the properties of cancer cells. 3) What is AIDS ? Explain its mode of transmission. 4) Explain cornea grafting. 5) Explain : a) Poikilothermy b) Photoperiodism 6) What is commensalism ? Explain with an example. 7) Write a note on Green-house effect.

(5×5=25)

*SN257*

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SN – 257

Ë»ÝWÜ & Ô III.

D PæÙÜPÜívÜ ¿ÞÊÜâ¨Ý¨ÜÃÜã GÃÜvÜPæR EñܤÄÔ. 1)

(2×10=20)

q±Ü³~ ŸÃæÀáÄ : G) AŸáì«ÜPÝÄWÜÙÜá ¹) ÃæàwÁãà bQñæÕ

2)

±ÝÅ¥ÜËáPÜ, ©Ì£à¿á ¯Ãæãà«ÜPÜñæ ÊÜáñÜᤠÓæãàíPÜá ¯Ãæãà«ÜPÜ¨Ü ŸWæY ËÊÜÄÔ.

3)

±ÜÄÓÝÄPÜ QÃÜá®æÇæ Gí¨ÜÃæà®Üá ? ËË«Ü QÃÜá®æÇæWÜÙÜ®Üá° E¨ÝÖÜÃÜOæWÜÙæãí©Wæ ËÊÜÄÔ.

4)

g®Ü ÓÝí¨ÜÅñæ ÊÜáñÜᤠg®ÜÓÜíTÝ Óæã–ào¨Ü ŸWæY q±Ü³~ ŸÃæÀáÄ. PART – C

III. Answer any two of the following :

(2×10=20)

1) Write notes on : a) Carcinogens b) Radiotherapy 2) Explain primary, secondary immunity and immunization. 3) What is an ecological niche ? Explain the different types of niche with examples. 4) Write explanatory notes on population density and human population explosion. ————————