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).
