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PPSC · PMS Punjab 2021

Zoology, Paper I

100 marks · 3 hours · 8 questions
This paper Zoology · all yearsQ. 1 · What are the different modes…Q. 2 · Describe the general characteristics of…Q. 3 · Explain the water vascular system…Q. 4 · Write short note on any…Q. 5 · Write a detailed note on…Q. 6 · What adaptations of birds promote…Q. 7 · Discuss the origin and evolution…Q. 8 · Write short note on any…With this paper← 20202021 →
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Section I

Q. 1
  1. (a)What are the different modes of locomotion in Protozoa? [10]
  2. (b)Discuss in detail the shell in different groups of Molluscs. [10]
(20)
Q. 2
  1. (a)Describe the general characteristics of phylum Aschelminthes. [10]
  2. (b)Discuss different types of reproduction found in Porifera. [10]
(20)
Q. 3
  1. (a)Explain the water vascular system in Echinodermata. [10]
  2. (b)Write note on larva of various classes of Arthropoda. [10]
(20)
Q. 4

Write short note on any FOUR of the following:

  1. (a)Tagmatization [5]
  2. (b)Metamorphosis [5]
  3. (c)Nematocysts [5]
  4. (d)Polymorphism [5]
  5. (e)Body plan of triploblastic acoelomate [5]
(20)

Section II

Q. 5
  1. (a)Write a detailed note on earliest known vertebrate. [10]
  2. (b)Discuss the adaptations in external structure and locomotion in mammals. [10]
(20)
Q. 6
  1. (a)What adaptations of birds promote endothermy and flight? Why is endothermy Important for birds? [10]
  2. (b)Explain in detail the causes of evolution and extinction of dinosaurs. [10]
(20)
Q. 7
  1. (a)Discuss the origin and evolution of mammals tracing their synapsid lineage. [10]
  2. (b)Describe the process of excretion and osmoregulation in amphibians. [10]
(20)
Q. 8

Write short note on any FOUR of the following:

  1. (a)Feathers [5]
  2. (b)Migration of birds [5]
  3. (c)Endothermy [5]
  4. (d)Specialized teeth in mammals [5]
  5. (e)Evolution of jaw in vertebrates [5]
(20)

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About this paper

The 2021 PMS Punjab Zoology paper set by the PPSC. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet.

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