Zoology CSS Paper I 2004
FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION FOR RECRUITMENT TO POSTS
IN BPS – 17 UNDER THE FEDERAL GOVERNMENT, 2004.
ZOOLOGY, PAPER – I
TIME ALLOWED: THREE HOURS MAXIMUM MARKS:100
NOTE: Attempt FIVE questions in all, including question No. 7 which is COMPULSORY. Select at least TWO QUESTIONS from each of the SECTIONS ‘I’ AND ‘II’. All questions carry EQUAL marks.
SECTION ‘I’
- (a) Give a brief account of Pathogenic Protozoa.( 7)
(b) Describe different types of Canal System found in Sponges. (7)
(c) “In Tapeworm True Segmentation is absent.” Comment. (6) -
(a) “Polyp and Medusa are strictly homologous structures.” Justify the statement. (7)
(b) Tracheal apparatus of insects and those of Arachnids are essentially different. Discus the above statement. (6)
(c) Give an account of Podium in Mollusca. (7) -
Write short notes on the following. (5+5+5+5)
(a) Schizocoel (b) Secondary Segmentation (c) Echinoderm Larvae (d) Water Vascular System in Echinoderms.
SECTION ‘II’
- (a) “Hemichoda” should not be included in Chordata. Justify the statement. (8)
(b) “Amphioxus” is certainly related to Ancestral vertebrates. Comment upon the statement. (12) -
(a) Discuss the Evolution of Aortic Arches in different vertebrate groups. (8)
(b) Discuss Birds as a flying Machine. (12) -
(a) Briefly describe the structure, formation and function of “Placenta”. (12)
(b) Amplify the statement that Monotremes show a mixture of Mammalian and Reptilian characters. (8)
COMPULSORY QUESTION
- Write only the correct answer in the Answer Book. Do not reproduce the questions.
(1) Despite the structural diversities they are characterized by having soft body protected by calcareous shell developing from the mantle layer.
(a) Corals (b) Foraminiferos (c) Molluscs (d) None of these
(2) The members of the phylum are exclusively Marine.
(a) Porifera (b) Coelenterata (c) Echinodermata (d) None of these
(3) How many paired legs are present in Arachnids?
(a) 2 pairs (b) 3 pairs (c) 4 pairs (d) None of these
(4) A true Coelom is absent in:
(a) Platyhelminthes (b) Mollusca (c) Insects (d) None of these
(5) A single aperture is present in
(a) Nematoda (b) Cridaria (c) Annelida (d) None of these
(6) The following represents Enterocoelous phylum.
(a) Annelida (b) Mollusca (c) Echinodermata (d) None of these
(7) It is exclusively a Parasitic group.
(a) Ciliata (b) Mastigophora (c) Phizopoda (d) Sporozoa (e) None of these
(8) Most species of Animal Kingdom belong to this Class:
(a) Acazina (b) Hexapoda (c) Crustacea (d) None of these
(9) Insect mouth parts are serially homologous.
(a) Claspers (b) Sting apparatus (c) Cerci (d) Legs (e) None of these
(10) The only groups of animals which are diploblastic in nature:
(a) Platyhelminthes (b) Coelenterata (c) Porifera (d) None of these
11) The phenomenon in which larva becomes sexually mature.
(a) Retrogressive Metamorphosis (b) Neoteny (c) Both ‘a’ and ‘b’ (d) None of these
(12) Amphibians have the following number of chambers in their heart.
(a) 2 (b) 3 (c) 4 (d) 5 (e) None of these
(13) The young are born in less developed condition.
(a) Monotremes (b) Marsupials (c) Placentals (d) None of these
(14) Limbs of Sea Crows and Sea Lions are the product of:
(a) Convergent Evolution (b) Divergent Evolution (c) Parallel Evolution (d) None of these
(15) In these animals the teeth are reduced to molars without enamel or no teeth are present.
(a) Moles (b) Bats (c) Sloths (d) None of these
(16) Only hind limbs are lost in:
(a) Snakes (b) Whales (c) Bets (d) None of these
(17) Among the following which snake is non-poisonous?
(a) Krait (b) Python (c) Viper (d) None of these
(18) Which one is excluded from the Phylum Chordata.
(a) Urochordata (b) Hemichordata (c) Cephalochordata (d) None of these
(19) The earliest known species of birds is:
(a) Archaeopteryx (b) Hesperornis (c) Ichthyornis (d) None of these
(20) A muscular diaphragm helps to move air into and out of the lungs in:
(a) Amphibians (b) Reptilians (c) Avians (d) Mammalians (e) None of these
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