Download SGBAU BSc 2019 Summer 3rd Sem Zoology Life n Diversity Of Chordata n Concept Of Evolution Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 3rd Sem Zoology Life n Diversity Of Chordata n Concept Of Evolution Previous Question Paper

AVV?l 693
B.Sc. Part-ll (Semestcr-lll) Examination
ZOOLOGY
(Life and Diversity of Chordata and Concept of Evolution)
Time : 'l?hrcc Hoursl [Maximum Marks : 80
Note :?(1) ALL questions are compulsory.
(2) Question No. I carries 8 marks and remaining SIX questions carry 12 marks
each.
(3) Illustrate your answer with suitable diagrams whcrcvcr necessary.
1. (A) Fill in the blanks : 2
(i) Amplzioxus is commonly known as
(ii) chal and sebaceous glands arc found in the skin of class
(iii) The connecting link between annelida and arthropoda is
(iv) The Rana Iigrina is commonly called as
(B) Choosc the correct alternative from the following : 2
(v) _ ? is a cartilaginous ?sh.
(a) Calla (b) Labeu
(c) C:\prinus (d) Scoliudon
(vi) Coiling around eggs to guard them is found in 4,,
(a) Echidna (b) Ichthyophis
(c) Salamander (d) Calotcs
(vii) The mammalian kidncy is
(a) Protoncphric (b) Mcsoncphric
(c) Mctancphric ((1) None ol?thesc
(xiii) Homo ereclus evolved in
(:1) Asia (b) Europe
(c) Africa (d) Australia
(C) Answer in ONE sentence cach : 4
(ix) What is gene ?ow ?
(x) How many chambers are present in mammalian heart ?
(xi) Namc of the additional chambers of Sculiodon heart.
(xii) Sound producing organ of birds.
2. Givc an account of respiratory system of Scoliodon with its mechanism. 12
()R
Dcscribc the digestive system of Amphioxus.
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3. Explain Ihu: folkming ' 12
(:1) External fcmurcs ut' Rana rigrinu.
(b) Internal structure of heart )t? frog. (Only lubclled diagram).
(c) Urinogeniml system or~ JL'mule calmcs.
()R
(d') Parental care in anuru.
(6) Internal structure of ham ?)t? calnlex, (Only labelled diagram)
(D Snake \cnom.
4. Describe the migration in airds 12
OR
Describe the salient {cauu?us oI? l'lolothcriu?
'JI
Explain the following : 13
(g) Embryologicul evidences ul? uvolulion
(11') Petri?ed fossils
(_i) l?cripazus us connccling link.
()R
Li) Anatomical ex?idcmcs ul wolution
(k) Importance of fossils recqu
(l) Radioactive carbon du?ing )1 fossils.
6. Describe the following : 12
(m) Ucnc frequency
(n) Sympatric spccialiun
(O) Hardy Wcinherg equilibrim 1.
()R
(p) Gcnelic drift
(q) Natural sclcclion
(r) Convergent evolution.
7? Attempt the following : 12
(s) Rumapithccus
(I) Anrlic archu: in ?sh
(u) Desert adaptation.
OR
(v) Dryopi .hccus
(w) Ncundcnhal man
(x) Terrestrial adaptation.
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