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» Class XI Zoology 2011 Guess Paper
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Posted on: May 8th, 2011

XI Zoology

SECTION “A” – (MCQs – Multiple Choice Questions)

NOTE: Attempt all questions from this Section.

Q.1. Choose the correct answer for each from the given below. (08 Marks)

i. Ascaris is the parasite of

  • Stomach
  • Intestine
  • Liver
  • Pancreas

ii. Leukemia is the disorder of

  • Kidney
  • Heart
  • Blood
  • Liver

iii. Phylum belongs to deuterstome

  • Mollusca
  • Arthropoda
  • Echinodermata
  • Annelida

iv. The blood vessels carrying oxygenated blood from the lungs to the heart are known as

  • Pulmonary artery
  • Coronary artery
  • Coronary Vein
  • Pulmonary Vein

v. Which of the following animals has flame cells?

  • Planaria
  • Jelly fish
  • Starfish
  • Hydra

vi. Trypanosoma belongs to the class

  • Flagellata
  • Sarcodina
  • Ciliata
  • Suctoria

vii. The characteristic feature of Echinodermata is

  • Water Vascular System
  • Canal System
  • Trached System
  • None of these

viii. Digestion is brought about by

  • Acid
  • Base
  • Minerals
  • Enzymes

ix. The common name of Limulus is

  • Grasshopper
  • King Crab
  • Loligo
  • Plasmodium

x. Lamprey has

  • No jaws
  • No tongue
  • No teeth
  • No vertebrate

xi. The cell of ectoderm which contains ostium in porifera is

  • Procytes
  • Pinococytes
  • Choanocytes
  • Amoebocytes

xii. The scale with outer spiny edges is called

  • Placoid
  • Ctenoid
  • Cycloid
  • None of these

xiii. Monotermes are also called

  • Prototerians
  • Metatherians
  • Calcarians
  • Eutherians

xiv. T.B. is caused by

  • An Allergy
  • Bacterium
  • A Virus
  • Nicotin

xv. Female ascaris may produce eggs everyday

  • 200,000
  • 20,000
  • 300,000
  • 30,000

xvi. The difference between Systolic and Diastolic pressure is called

  • High Blood Pressure
  • Low Blood Pressure
  • Pulse Pressure
  • None of these

SECTION “B” – (Short Answer Questions)

Q.2. Answer any TEN questions in all from this Section. All questions carry equal marks. (20 Marks)

i. What is Polymorphism? Discuss briefly.


Describe briefly the uses and misuses of antibiotics.


Describe briefly the types of Enzyme.

ii. Differentiate between Radial Symmetry and Bilateral Symmetry.


Differentiate between DNA and RNA.


Differentiate between Enoenzyme and Exoenzyme.

iii. Differentiate between Flying birds and Flightless birds.


Differentiate between Diploblastic Organization and Triploblastic Organization.


Write a note on Haemoglobin.

iv. Differentiate between Inspirate and Expiration.


Describe Biological Method in detail.


Give a brief description of plaque and dental diseases in man.

v. Differentiate between Hibernation and Aestivation.


Write a note on Altrosclerosis


Write the names of some endoparasites of man

vi. Give the distinguishing characteristics of the Class Mammalia.


Write the names of edible fishes of Pakistan.


What is the Significance of Cloning? Write briefly.

vii. Write a note on the major branches or the fields of specialization in Biology.


Write a note on malaria and its prevention.


Write down the important characters of the Phylum Arthropods.

viii. What is Archaeopteryx?


Write a short note on Competitive Inhabitor.


Write a note on Blue Babies.


Draw Asexual Cycle of Plasmodium in Man.


Write a note on the Nutrition in Hydra and Cockroach.


Write a short note on carbohydrates and Proteins.


Write a short note note on Hypertension.

ix. Write a short note on Lung fishes.


Write down the distinguishing feathers of the Class Aves.


Write down the distinguishing features of the Class Reptilia.

x. Differentiate between Retitae and carinatae.


Differentiate between Chondrichthyes and Osteichthyes.


Write a note on endoparasites of a human being.

xi. Write a note on metamorphosis in insects.


Explain pearl formation in molluscus.


Write a note on nucleic acid.

xii. Write a note on Marsupial Mammals.


Draw a labelled diagram of L.S of human heart.


Define a Lymph. Write the functions of the Lymphatic system.

xiii. Write a note on single circuit and double circuit circulation plan.


State about S.A. Node and A.V. Node.


What are Gastro intestinal disorders? Give a description of each.

xiv. How is carbon dioxide transported from tissues to the lungs?


Write a note on Respiratory System in fishes.


Differentiate between an Artery and Vein.


Write a note on economic importance of Arthropods.

xv. Describe the process of Nutrition in Amoeba.


Write a note on the factors affecting enzyme activity.


Write a note on the functions of Liver.

SECTION “C” – (Detailed Answer Questions)

NOTE: Answer TWO questions from this Section. All questions carry equal marks. (12 Marks)

Q.3. Describe in detail the composition of Blood and the functions of Blood.


Differentiate between Active Immunity and Passive Immunity and describe the Adaptive Immune system in detail.


Define Amphibia. Give the characters of Class Amphibia.


Write detailed notes on following.

  • Proteins
  • Carbohydrates
  • Lipids
  • Water

Q.4. Write the salient features of Phylum Protozoa.


The Phylum Annelids. Name its classes and give the characters and example of each class.


Describe the salient features of the Phylum Arthropoda or Echinodermata. Classify giving characters and example of each class.


What are the Mammals? Name its sub classes and give the characters and examples of each sub-class.

Q.5. Define Digestion. Describe the process of digestion in man.


What are Enzymes? Give the types of enzymes and their mode of action. Also explain the factors that effect their activity.


What are Cardio Vascular Disorders? Give a description of each.


Describe the structure of human Heart and the circulation of blood through it. Draw the diagram of the internal structure of human Hearts.


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