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BS-IS/11
219705
ZOOLOGY – COURSE NO. Zoo-101

Time Allowed – 3 Hours                                                 Maximum Marks – 80

Section-1

Note: – Attempt all ten questions. Each question carries 2 marks and the answer should be in 20 words.

Section-2

Note: – Attempt one question from each unit. Each question carries 12 marks. Draw labelled diagram wherever necessary.

SECTION-1

1. Define Protozoa.

2. What are Spicules?

3. Explain Nephridium.

4. Define metagenesis.

5. Explain cercariae larvae.

6. What is clitellum?

7. Describe an osculum.

8. What are tube feet?

9. Explain pinocytosis.

10. What is polymorphism?

SECTION-2

Unit I

1. Describe the process of conjugation and its significance in Paramecium.

2. Give the distinctive characters of phylum Porifera. Classify it up to classes giving characters and examples of each class.

Unit II

3. Write notes on:

   (a) Histology of Metridium

   (b) Medusa of Obelia.

4. What is digenetic life cycle? Explain it with reference to life history of Fasciola hepatica.

Unit III

5. What is a nephridium? Name and describe the various types of nephridia found in earthworm.

6. Give an account of digestive system of Prawn.

Unit IV

7. Describe the respiratory organs of Pila and explain how they are adopted for its mode of life.

8. Explain in detail the water vascular system of star fish.

Unit V

9. Write notes on:

   (a) Concept of coelom

   (b) Pluteus larva.

10. Write an account of nutrition in Protozoa.

B.Sc. IV - Semester Degree Examination
CBS-IVS/5
214778
ZOOLOGY
Course No. : UZOTC-401

Time Allowed: 2½ Hours                                                                              Maximum Marks: 80

Note: Attempt all the questions from section A & B.

Section A comprises of 5 short answer type questions (70-80 words), each carrying 3 marks.

Section B comprises of 5 medium answer type questions (250-300 words), each carrying 7 marks.

Section C comprises of long answer type questions (500-600 words). Attempt 2 questions, each carrying 15 marks.

Draw labelled diagrams wherever necessary.

Section - A

Short answer type questions. All are compulsory. (5x3=15)

1. Define multiple alleles and lethal alleles.

2. Give a brief account on Translocations and its types.

3. Give an account on phylogeny of human.

4. What do you mean by Recombination frequency?

5. Define allopatric and sympatric speciation.

Section - B

Medium answer type questions. All are compulsory. (5x7=35)

6. What is incomplete and Co-dominance, explain in detail.

7. Discuss in detail the complete and incomplete linkage.

8. Write a detail account on Gene mutations.

9. Describe the concept and Evidence of evolution.

10. What is Isolating mechanism, explain its examples.

Section - C

Long answer type questions. Attempt any two. (2x15=30)

11. Discuss in detail the principal and laws of inheritance with suitable crosses.

12. Give the detailed account on Crossing over. Add a note on Recombination frequency.

13. Describe various numerical chromosomal changes.

14. Give a detail account on:

a) Neo - Darwinism

b) Mass extinctions

15. Write an account of

a) Hardy Weinberg equilibrium

b) Mutation pressure.

                                      Ψ Ψ Ψ

B.Sc. I - Semester Examination
BS-I/10
231883
Zoology
Course No. : 101

Time Allowed: 3 hours                                                                        Maximum Marks: 80

Section-A

Note: Attempt all 12 questions. Each question carries ½ mark and the answer should be in 20 words. (½×12=6)

1. Define protozoa.

2. Explain pinnocytosis.

3. What is planula larva?

4. Describe on ootype.

5. What is a protoandrous condition?

6. Where do you find cytogenous glands?

7. Describe a Heteronereis parapodium.

8. Describe a Statocyst.

9. What are gastropod molluscs?

10. What are dermal papillae?

11. Describe an osculum.

12. What are barrier reefs?

Section-B

Note: Attempt one question from each Unit. Each question carries 2 marks and the answer should be in 50 words.

Unit-I

1. Describe locomotion in Euglena.

2. Explain reproduction in Sycon.

Unit-II

3. Describe the medusa of Obelia.

4. Describe larval stages of Taenia.

Unit-III

5. Briefly explain the circulatory system in earthworm.

6. Explain appendages (cephalic) of Prawn.

Unit-IV

7. Explain the structure of Pila globosa.

8. Describe reproductive system of Star fish.

Unit-V

9. What are coral reefs and how are they formed?

10. Describe briefly larval forms of crustacea (any two).