DEVELOPMENTAL BIOLOGY PRACTICAL

Paper Code: 
25CZOL512
Credits: 
2
Contact Hours: 
60.00
Max. Marks: 
100.00
Objective: 
This course will enable the students to –
1. Analyze frog developmental stages on permanent slides, including cleavage, blastula, gastrula, neurula, and tadpole stages.
2. Examine metamorphic changes during the transition of tadpoles into frogs.
3. Investigate developmental stages of chick embryos through window preparation and study placenta sections to understand its structure and function.
 
Course Outcomes: 

Course

Learning outcomes (at course level)

Learning and teaching strategies

Assessment Strategies

Course Code

Course Title

 

 

 

 

 

 

 

 

 

 

 

 

25CZOL512

 

 

 

 

 

 

 

 

 

 

 

 

Practical

The students will be able to CO:103            Analyze                         frog developmental         stages                       on permanent       slides,                     including cleavage,       blastula,      gastrula, neurula, and tadpole stages.

CO:104 Examine metamorphic changes during metamorphosis of tadpoles into frogs.Investigate developmental stages of chick embryo through window preparation.

CO:105 Study placenta sections to understand its structure and function.

CO:106 Prepare a project report summarizing observations on chick embryo development.

CO:107 Demonstrate skills and record the concepts in the form of practical file and reflect on personal learning experiences and experimental outcomes during viva voce.

CO:108 Contribute effectively in course-specific interaction

The approach in teaching: Demonstration, Lectures, Discussion, Tutorials, Reading assignments, Team teaching

 

Learning activities for the students: Self-learning assignments,

Effective questions, Simulation, Seminar presentation, Giving tasks, Chart preparation

Assessment Strategies , Semester end examination s, Solving problems in tutorials, Presentation.

 

1. Study of whole mounts and sections of developmental stages of frog through permanent slides:       Cleavage stages, blastula, gastrula, neurula, tail-bud stage , tadpole (external and internal gill stages)
2. Study of whole mounts of developmental stages of chick through permanent slides: Primitive streak (13 and 18 hours), 21, 24, 28, 33, 36, 48, 72, and 96 hours of incubation (Hamilton and Hamburger stages)
3. Window preparation and blastoderm mounting in chick
4. Study of different sections of placenta (photomicrograph/ slides)
5. Project report on chick embryo development 
 
Essential Readings: 
● A manual of Zoology Part I and II Ekambarnath Ayyar and Ananthakrishnan. Viswanathan Pvt. Ltd, Madras.
● Practical Zoology, Vertebrates, Lal, S.S. Rastogi Publications, Merrut.
● Carlson, R. F. Patten's Foundations of Embryology.
 
References: 

●  Biology of Animals. C.P. Hickmann, L.S. Roberts and A. Larson. McGraw Hill Company, New York.

●  Practical Zoology, Jacob, D., Bhatia,A.L., Kohli,K.S., Vyas,D.K. Ramesh Book Depot, New Delhi.

●  A manual of practical zoology: chordates.P.S.Verma. S Chand publishers.

 

SCHEME FOR PRACTICAL EXAMINATION:

Scheme for CA End Practical Examination

Exercise 1

Exercise II

File

Viva

Attendance

Total

5

5

10

5

5

30

Scheme for Semester End Practical Examination

Exercise I

Exercise II

Exercise III

Exercise IV

Spotting

File

Viva

Total

8

8

8

8

6x3=18

10

10

70

e-RESOURCES:

https://ncert.nic.in/vocational/pdf/kedf101.pdf

https://krishijagran.com/animal-husbandry/poultry-farming-which-is-more-... or-broiler/ http://www.agritech.tnau.ac.in/expert_system/cattlebuffalo/Breeds%20of%20cattle%20&% 2 0baffalo.html

https://agritech.tnau.ac.in/animal_husbandry/ani_goat_breeds%20of%20goat...

JOURNAL:

●  Journal of Developmental Biology

●  International Journal of Developmental Biology

 

Academic Year: 
2025-2026
  • Printer-friendly version
  • PDF version