Zoology CSS Paper I 2006

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POSTS
IN BPS–17, UNDER THE FEDERAL GOVERNMENT, 2006
ZOOLOGY, PAPER I
TIME ALLOWED: THREE HOURS MAXIMUM MARKS: 100
NOTE: (i) Attempt ONLY FIVE questions in all, including QUESTION NO.7, which is COMPULSORY. All questions carry EQUAL marks.
(ii) Extra attempt of any question or any part of the attempted question will not be considered.
(iii) Candidate must draw two straight lines ( ============= ) at the end to separate each
question attempted in Answer Books.

SECTION 1

Q.1 (a) Discuss PROTOZOA as UNICELLULAR and ACELLULAR organisms. (7)
(b) Define POLYMORPHISM and discuss it with reference to CEOLENTRATES.(6)
(c) “ANNELIDS have said to have true METAMERIC SEGMENTATION.”(7)

Q.2. (a) “PORIFERA exhibits a Tissue level of organization”.Discuss.(6)
(b) “ECHINODERMS have a close evolutionary relationship with CHORDATES”.(6)
Comment the statement.
(c) Discuss insects as the most successful group.(8)

Q.3. Write short notes on the following:- (5 each)
(a) CORAL REEF (b) COELOM (c) TUBE FEET IN ECHINODERMS (d) FOOT IN MOLLUSCA.

SECTION II

Q.4. (a) “HEMICHORDATES have a mixture of CHORDATE and NON-CHORDATE characters.”Explain.(10)
(b) “ALL the CHORDATES character are present in Ascidea in larval stage”.Discuss.(10)

Q.5. (a) Write an essay on biting mechanism of snakes.(8)
(b) Discuss the different adaptation to flight with reference to birds.(12).

Q.6. (a) Describe placentation in mammals.(9)
(b) Write a short essay on different types of scales found in fishes(11).

COMPULSORY QUESTION

Q.7. Write only the correct answer in the answer book. Do not reproduce the question.
(1) Contractile vacuole in protozoa is basically responsible for
(a) Excretion (b) osmoregulation (c) Feeding (d) All of these.

(2) Pneumatocysts are typically present in
(a) Porifera (b) Annelida (c) Coelenterata (d) Protozoa

(3) Pinococysts are present in
(a) Echinodermata (b) Arthropoda (c) Porifera (d) None of these.

(4) Nerve cord is dorsally located in
(a) Annelids (b) Mollusca (c) Arthropodes (d) None of these

(5) Open circulatory system is present in
(a) Annelids (b) Insects (c) Reptiles (d)Mammals

(6) Sponges are present in
(a) Marine (b) Freshwater (c) Moist places (d)Both (a) and (b)

(7) Telson is present in
(a) Annelids (b) Arthropoda (c) Mollusc (d)Chordates

(8) Entamoeba histolytica is a member of class
(a) Scyphozoa (b) Polychaeta (c) Mastigophora (d) None of these

(9) A house fly has legs
(a) 8 (b) 10 (c) 6 (d) 4

(10) Wasps bite using
(a) Mouth (b) Proboscis (c) Genital claspers (d) None of these

(11) Number of cranial nerves in fish
(a) 10 (b) 12 (c) 8 (d) None of these

(12) Frog has ribes
(a) 6 (b) 12 (c) 4 (d) None of these

(13) Scales in reptiles are
(a) Ectodermal (b) mesodermal (c) Both a & b (d) Endodermal

(14) Gill slits in Amphioxus are present
(a) Mouth (b) Neck (c) Pharynx (d) Head

(15) Giraffe has neck vertebrae
(a) 15 (b) 10 (c) 7 (d) None of these

(16) Duck billed platypus has on its body
(a) Feathers (b) Hairs (c) Scales (d) None of these

(17) Pulmonary vein in mammals carries blood
(a) Deoxygenated (b) oxygenated (c) Both a&b (d) None of these

(18) RBCs in amphibians are
(a) Nucleated (b) Without nucleus (c) Both a&b (d) None of these

(19) Python kills its prey by
(a) poison bitting (b) Constriction (c) Both a&b (d) None of these

(20) The location of mouth is ventral in
(a) Bony fish (b) permyzaon (c) Shark (d) None of these

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