Question

Subsequent to fertilization an egg of Ascaris undergoes to profound changes, which involve

• A. Migration of glycogenic globules to the surface and formation of lipid layer, below the shell
• B. Formation of thick and chitinous shell
• C. Receiving a coat of albuminous material via the secretions elaborated by uterine cells
• D. All of the above

Answer 1

The correct option is D All of the above

Unfertilized egg of Ascaris contains globules of glycogen and fat. Immediately after fertilization, glycogen globules migrate to the surface and forms membrane, which hardens into a thick, clear and chitinous shell. Uterine cells secrete albuminous material which forms the coat. Thus, the correct answer is option D.