Monday, March 25, 2013

PPSC Past Papers of Zoology

(i)  What is the function of contractile vacuole?
(a) respiration (b) reproduction (c) osmoregulation
(d) digestion (e) None of these
(ii)  Specules are secreted by special mesenchymal amoebocytes called:
(a) scleroblasts (b) microscleres (c) myocytes
(d) collencytes (e) None of these
(iii)  True nerve cells or ganglion cells occur for the first time in:
(a) Protozoa (b) Porifera (c) Coelenterata
(d) Annelida (e) None of these
(iv)  The process by which an organism can replace its lost or damaged body parts is called:
(a) reformation (b) regeneration (c) reclamation
(d) reconstruction (e) None of these
(v)  Nematocysts are found in:
(a) Protozoa (b) Porifera (c) Annelida
(d) Mollusca (e) None of these
(vi)  In polychaetes the locomotory organ is:
(a) pseudopodium (b) neuropodium (c) notopodium
(d) parapodium (e) None of these
(vii)  Worms belonging to phylum platyhelminthes are commonly known as:
(a) round worms (b) ring worms (c) segmented worms
(d) earth worms (e) None of these
(viii)  Bipinnaria is a larval form of:
(a) Coelenterate (b) Polychaeta (c) Echinodermata
(d) Cestoda (e) None of these
(ix)  Closed type of circulatory system is found in:
(a) Platyhelminthes (b) Annelida (c) Porifera
(d) Arthropoda (e) None of these
(x)  The two common mosquito genera, Anophelesand Culex, can be easily identified by their:
(a) colour (b) flying speed (c) size
(d) sitting posture (e) None of these
(xi)  Sweat glands are epidermal glands and are found in:
(a) all birds (b) reptiles and mammals (c) mammals only
(d) birds and reptiles (e) None of these
(xii)  Sternum is absent in:
(a) mammals (b) birds (c) amphibians
(d) fishes (e) None of these
(xiii)  Amphioxus belongs to:
(a) Cephalochordata (b)  Hemichordata (c) Urochordata
(d) Cyclostomata (e) None of these
(xiv)  The urochordates or tunicates are marine animals, commonly known as:
(a) Sea cucumber (b) Sea squirts (c) Sea urchin
(d) Sea star (e) None of these
(xv)  Optic lobes are found in:
(a) fore brain (b) mid brain (c) hind brain
(d) medulla (e) None of these
(xvi)  The number of cervical vertebrae in most mammals is:
(a) two (b) four (c) nine
(d) eleven (e) None of these
(xvii)  Lymph hearts are absent in:
(a) fishes (b) amphibians (c) reptiles
(d) mammals (e) None of these
(xviii) The lymph capillaries coming fromintestinal villi are called:
(a) veins (b) lymph nodes (c) lacteals
(d) lymph duct (e) None of these
(xix)  How many caudal vertebrae are found in man?
(a) 1 – 2 (b) 3 – 4 (c) 5 – 6
(d) 7 – 8 (e) None of these
(xx)  The inner membrane of the two foetal membranes in reptiles, birds and mammals is called:
(a) chorion (b)  amnion (c) peritoneum
(d) pericardium (e) None of these



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