c1 .1.1
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- 1. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 2. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 3. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 4. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 5. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 6. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 7. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Basis of Classification The important criteria used in classification is called basis of classification. 1.Germ layers 2.Body size 3.Number of cell 4.Symmetry 5.Coelom 6.Metamerism 7.Presence or absence of vertebral column. 8.Habitat
- 8. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Germ Layers)
- 9. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Amoeba proteus Spongilla fragilis 1.Non layered: 2.Single layered:
- 10. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Hydra vulgaris Homo sapiens. 3.Diploblastic : Body wall 2 layered ectoderm & endoderm eg :- Coelenterates with an undifferentiated mesoglea layer in between 4.Triploblastic: body wall 3 layered ectoderm & endoderm & mesoderm : eg Platyhelminths
- 11. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Symmetry)
- 12. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Symmetry Symmetry applies to the arrangement of body parts with reference to some axis of body. Animals that are irregular in shape are asymmetrical. Animals that are regular in shape are symmetrical.
- 13. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Spherical symmetry)
- 14. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Radial symmetry) Star fish
- 15. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Bilateral symmetry)
- 16. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Asymmetry)
- 17. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All ) Volvox globator
- 18. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Metamerism)
- 19. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All 1.Absence of metamerism some animals, the body is externally and internally divided into segments with a serial repetition of at least some organs. For example, in earthworm, the body shows this pattern called metameric segmentation and the phenomenon is known as metamerism.
- 20. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All 2.Similar
- 21. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All 3.Dissimilar
- 22. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Coelom)
- 23. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All (Acoelomate)
- 24. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All -(Pseudocoelomate)
- 25. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All - (Eucoelomate)
- 26. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Coelom: The space between alimentary canal and body wall which is covered by peritoneum membrane is called coelom.
- 27. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All eeectoderm endoderm mesoderm
- 28. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All ectoderm mesoderm endoderm pseudocoelom
- 29. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All eucoelom ectoderm mesoderm endoderm
- 30. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Body size: 1.Microscopic
- 31. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All 2.Large
- 32. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All Plasmodium vivax Number of cell: 1.Unicellular
- 33. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All 2.Multicellular
- 34. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All On the basis of vertebral column 1.Invertebrate
- 35. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All 2.Vertebrate
- 36. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 37. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 38. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 39. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All
- 40. MD. KAWSAR ALI HAWLADER,LECTURER OF BIOLOGY, CLASS-XI, CHAPTER-1 Cambrian Education GroupTotal Education For All