Study of Structure of Gametes in Sea urchin (1).pptx

Gametes of sea urchin

1. Developmental Biology Practicle of Embryology

2. 4051 Submitted to Prof Danish Riaz Submitted by Mehwish Yasin

3. Study of Structure of Gametes in Sea urchin

4. Material 0.5M KCL 50ML Glass beaker 1mL syringe

5. Male sea urchin I took a Male sea urchin And I injected Kcl into the intraceolomic cavity After the male sea urhin turn on beaker After 30 min I collect the sperm

6. Sperm The releasing of a gamete is White in colour

7. Female sea urchin I take female sea urchin I injected KCL In the intracoelomic cavity After few minute I collected the egg inside the beaker

8. Egg The colour of egg is orange

9. Study of early stages in the development of a frog

10. Material Prepared slide of Frog Light Microscope

11. Early developmental stages of frog Zygote Cleavage Morula Blastula Gastrula Neurula Organogenesis Tadpole Larva

12. Zygote The haploid sperm and egg nuclei fuse to form the zygote Diploid nucleus

13. Cleavage The first and 2 nd cleavage is Meridional Third cleavage is horizontal

14. Morula Next few cleavages producing 16 and then 32 Cell

15. Blastula Continued cleavage produce thousand of cells called Blastula

16. Gastrula Invagination of cells in the region of middle of the gray crescent

17. Neurula Neurula is an embryo in which neurulation occur It involves the formation of internal tube

18. Organogenesis Neural tube will develop into the brain and spinal cord The notochord forms from mesoderm

19. Tadpole Larva After the organ and body systems have differentiated themselves The embryo will become a tadpole