types of egg already explained in practical class students are directed to go through text including figures for the topic from respective practical record book next introduction egg membranes based ...
Filetype Power Point PPTX | Posted on 31 Aug 2022 | 4 years ago
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...Types of egg already explained in practical class students are directed to go through text including figures for the topic from respective record book next introduction membranes based on origin membrane following classification can be made primary a vitelline noncellular transparent layer mucoprotein forming extracellular matrix which is both fibrous and amorphus often thicker stronger than underlying plasma also known as chorion fishes reptiles mammals zona pelucida b radiata envelope shark some bony amphibians have striated apppearance called it represents degraded microvilli growing oocyte continue c jelly echinoderms many other marine invertebrates much structure coat all these usually adhere but at later stage space filled with fluid appear between two previtelline d micropyle eggs opening found location bears definite relation animal vegetal polarity e g certain mollusks pisces...