CSS Zoology 2011



Q.1. Select the best option/answer and fill in the appropriate box on the Answer Sheet. (1 x 20=20)

(i) The disease causing protozoan is:

(a) Amoeba

(b) Paramecium

(c) Stentor

(d) Trypanosoma

(e) None of these

(ii) Binucleate protozoan is:

(a) Mastigo-amoeba

(b) Toxoplasma

(c) Didymium

(d) Trichonympha

(e) None of these

(iii) Spicules in sponges are secreted by cells called:

(a) Chromocytes

(b) Thesocytes

(c) Scleroblasts

(d) Spongoblast

(e) None of these

(iv) Which one of the following coelenterate is also called Portuguese-man of war:

(a) Hydra

(b) Velella

(c) Obelia

(d) Physalia

(e) None of these

(v) Pseudocoelomate animals are:

(a) Coelenterates

(b) Nematodes

(c) Annelids

(d) Arthropods

(e) None of these

(vi) Earth worm belongs to:

(a) Phylum platyhelminthes

(b) Nematode

(c) Mollusca

(d) Arthropoda

(e) None of these

(vii) The number of arms in octopus is:

(a) Four

(b) Six

(c) Eight

(d) Ten

(e) None of these

(viii) The excretor organ of cockroach is:

(a) Flame cell

(b) Nephridia

(c) Coxal gland

(d) Green gland

(e) None of these

(ix) The compound eyes are present in:

(a) Cuttle fish

(b) Sea urchin

(c) Sea mouse

(d) Honey bee

(e) None of these

(x) Balanoglossus belongs to:

(a) Hemichordata

(b) Cephalochordata

(c) Urochordata

(d) Craniata

(e) None of these

(xi) The extinct vertebrates are:

(a) Elasmobranchi

(b) Placodermi

(c) Osteichthyes

(d) All of these

(e) None of these

(xii) The type of scales found in shark is:

(a) Placoid scale

(b) Ganoid scale

(c) Cosmoid scale

(d) Cycloid scale

(e) None of these

(xiii) All of the following animals have three chamber heart except:

(a) Uromastix

(b) Snake

(c) Wall lizard

(d) Crocodile

(e) None of these

(xiv) An animal group having radially symmetrical adults but bilaterally larvae are:

(a) Annelids

(b) Echinoderm

(c) Chordates

(d) All of these

(e) None of these

(xv) Which one of the following is not an extra embryonic membranes?

(a) Pleura

(b) Amnion

(c) Chorion

(d) Allontoise

(e) None of these

(xvi) The egg laying mammals such as Duck billed platypus and spiny anteater are found in:

(a) Asia

(b) North America

(c) South America

(d) Australia

(e) None of these

(xvii) Renal portal system is absent in:

(a) Mammals

(b) Fish

(c) Amphibian

(d) Reptiles

(e) None of these

(xviii) Swim bladder is present in:

(a) Amphibia

(b) Giant turtle

(c) Sea snake

(d) All of these

(e) None of these

(xix) Diencephalons is a part of:

(a) Circulatory system

(b) Excretory system

(c) Nervous system

(d) Respiratory system

(e) None of these

(xx) Microlecithal egg is found in:

(a) Reptiles

(b) Birds

(c) Amphibian

(d) All of these

(e) None of these



Q.2. (a) Describe reproduction in paramecium. (10)

(b) Explain the different kinds of spicules in ponfera.  (10)

Q.3. (a) Discuss polymorphism in coelenterates. (10)

(b) Explain the life cycle of obelia. (10)

Q.4. (a) What are platehelminths. (10)

(b) Describe the life cycle of any medically important platehelminths. (10)

Q.5. Write short notes on: (5 x 4 = 20)

(a) Metamerism

(b) Mouth parts of insects.

(c) Foot in Mollusca

(d) Larvae of Echinoderm.


Q.6. (a) Give an account of arterial system of pigeon. (10)

(b) Explain hepatic portal system. (10)

Q.7. (a) What is Gastrulation? Describe gastrulation in frog. (10)

(b) Write an essay on parental care in Mammals. (10)

Q.8. Write short notes on the following: (5 x 4 = 20)

(a) Hairs in Mammals

(b) Development of bone

(c) Fish migration

(d) Egg types.