BSc II Zoology Embryology

BSC II Zoology
Paper II - Embryology 

These notes were prepared by Ms. Pranjal Verma (BSc II, Zoology, 2018-19). These notes are based on classroom instruction and some matter has been added after self study.
We strongly suggest that you SHOULD NOT take print outs. Taking notes helps in learning. 
Happy Learning

  1. Spermatogenesis
  2. Structure of Sperm 
  3. Oogenesis
  4. Types of Eggs/ classification of eggs
  5. Capacitation
  6. Acrosomal reaction
  7. Fertilizin anti-fertilizin reaction
  8. Cortical reaction
  9. Types of Cleavage 
  10. Morphogenetic movements and formation of gastrula
  11. Early embryonic development in frog 
  12. Early embryonic development in chick
  13. Early embryonic development in mammals 
  14. Extra embryonic membranes in chick
  15. Placentation in mammals
  16. Fate map
Frequently Asked Questions 
1. What is included in this section ?
Ans. It includes the class notes in Zoology Paper II. These notes were prepared by Pranjal Verma. 
2. Why are hand written notes given instead of typed matter ? 
Ans. Students will write the answers in their own handwriting in the exam. Hand written matter is more useful in this context.
 Hand written notes are given to help understand the following 
a. How to use multiple colours in  preparing your answer. :
b. How to draw diagrams. 
c. How to use white space.
d. The need to leave margins. These are to used to add matter and diagrams later.
3.  How to use this content?
a. Click on the links given below.
b. The matter will open as a pdf file.  
c. You can make notes/ take a print out of the notes.
4. Why were Pranjal's notes selected?
Ans. Pranjal's notes were selected because
a. She has good hand writing.
b. Her work is a good example of note making techniques like - use of heading, use of multiple colours, labelling on one side of the diagram, etc.
c. She makes fewer mistakes compared to other students.
5. Is this work perfect? Do I need to study form other books?
Ans. Nothing in this world is perfect!  Of course you need to study from other books. Remember that there is no substitute of hard work and 'books are your best friends'. These notes are just one of the many tolls that you can refer and read to advance your understanding of the subject.

Remember - Appealing work is more about good habits - start cultivating them today. 

Further reading :
1. Chordate Embryology by V. Rastogi, Kedar Nath Ram Nath Publsihers, Meerut Link 
2. An introduction to Embryology, A.K.Berry, Emkay Publications, Delhi Link 
3. Developmental Biology, S.F. Gilbert and S.R.Singer, Link , Search this book for topics free
4. An introduction to embryology, B.I.Balinsky,, Thomson Learning, Link 

Chick Embryo
Image by Brian Smith
CC Commons 2.0 Share alike licence
Link :


  1. Pranjal's handwriting is very good but small in size and colours are mixing. Only blue and black pen should be used and only one other colour should be used to highlight important points.

  2. it is very very very short notes but helpfull.

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