External morphology of cockroach

mainly based on external features of cockroach

1. External morphology of cockroach Guided By: Chethana R Yuvaraja’s college Presented By: Inchara R Molecular Biology 07/11/17

2. contents Introduction Classification of cockroach External features Head Thorax Abdomen Conclusion References Acknowledgement

3. introduction

4. Classification of Cockroach PHYLUM Arthropoda class Insecta ORDER Blattodae genus Periplaneta SPECIES Americana

5. Shape and size : Body is narrow, elongated, bilaterally symmetrical and dorso-ventrally flattened. The adult measures 3-4cm in length and 2cm in width. Colouration : The colour is shining reddish-brown . Exoskeleton : The whole body is externally covered by brown- coloured, hard, jointed, chitinous and greasy cuticle. - Exoskeleton has hardened plates called sclerites . External Features

6. Cuticle : T his affords protection from loss of water, provides rigidity and offers points of attachment to body muscles. Segmentation : Its body is divided into head, thorax and abdomen . Fig 1.

7. Fig :2 A-Male in dorsal view. B-female in ventral view

8. head Fig 3: (a)Head region (b)Mouth parts

9. Thorax Fig 4 : Thorax region of cockroach Fig 5: Leg part

10. abdomen Fig 6: Abdomen region of both Male and Female.

11. Fig 7: Abdomen Of Female And Male

12. conclusion

13. references e. l. Jordan and P. S. Verma. Invertebrate zoology, S. C hand and Company Ltd., 1127pp. www.biology4isc.weebly.com/morphology-and-antomy-of-cockroach .

14. Acknowledgement I would like to thank the Dept. of Molecular B iology for providing this opportunity to present this seminar. I would also like to thank my guide C hethana ma’am for her valuable guidance. Thank you one and all. 

15. Thank you