Maharashtra Animal and Fishery Sciences University 2009 B.Sc CBZ (Chemistry, Botany and Zoology) C.s.ezoology for preliminary - exam paper

21. A form of chromosomal aberration that involves the fusion of long arms of acrocentric chromosomes at the centromere is known as (a) Reciprocal translocation (b) Isochromosome(c) Robertsonian translocation (d) Centromeric fusion 

23. Consider the subsequent characteristics of coelomates :
1. Radial symmetry2. Asymmetry3. Origin of mouth 4. Embryonic cleavage pattern5. Coelom formationIf basic differences are to be obtained ranging from protostome coelomates and deuterostome coelomates, considerationofwhichofthe above characteristics will suffice?
(a) 1, 3, four and five (b) 2, 3, four and 5
(c) 1, three and four (d) five only 

24. In which among the provided minor phyla is the alimentary canal U shaped?(a) Bryozoa only(b) Chaetognatha and Phoronida(c) Bryozoa and Phoronida(d) Rotifera and Gastrotricha

26. Sea lily is the stalked echinodermofthe class(a) Articulata (b) Asterozoa(c) Crinoidea (d) Echinozoa 

27. Which oneofthe subsequent annelids is phosphorescent in the dark?(a) Aphrodite (b) Chaetopterus(c) Syllis (d) Sabella 

28. Which groupoffollowing animals possesses mesenchymal coelom?(a) Most Protostomia (b) Deuterostomia(c) Phoronida. (d) Nemertina

29. Consider the subsequent anatomical structures:
1. Single dorsal tubular nerve cord2. Notochord 3. Gill slits in pharynx4. BrainThe outstanding characteristics which distinguish chordates from other animals are -(a) one and two (b) one and 4(c) 1, two and three (d) 2, three and 4 

30. Which 1 among the subsequent undertakes the longest migration?
(a) Arctic tern (b) Flamingo(c) Painted stork (d) Pelican 

32. In turtle, the accurate sequenceofbony plates, on every sideofthe plastron in the antero-posterior direction is(a) Humeral - pectoral - gular - abdominal - femoral anal(b) Gular - humeral - pectoral - abdominal - femoral anal(c) Pectoral - abdominal - gular - anal(d) Abdominal - gular - femoral - anal 

Earning:   Approval pending.