o AT&T; LTE 2:18 PM 6 of 6 1. Know the number of phyla of animals known to zoolo
ID: 212435 • Letter: O
Question
o AT&T; LTE 2:18 PM 6 of 6 1. Know the number of phyla of animals known to zoologists 41%) - Done in the present day 2. Know characteristics of the Cambrian Explosion 3. Know the grades of organism, and their examples. 4. Be able to describe symmetry among animals and their 5. Be able to define the planes of symmetry 6. Know the characteristics of bilateral symmetry. 7. Know the characteristics of body cavities (coelom). 8. Be able to define the following terms: "deuterostomes 9. Know the characteristic changes that occur in the blastocoele during development. 10. Know the characteristics of blind gut. 11. Know the number and types of tissues in animals. 12. Be able to describe the cells associated with connective tissues 13. Know the relationship between animal size and the amount of energy consumption. 14. Know important individuals who contributed to development of theory of evolution before Darwin. 15. Know the role of discovery of fossil records in formulating the theory of evolution. 16. Be able to describe the role of Charles Lyell and Jean Baptiste de Lamarck in evolution theory development 17. Be able to identify the components of Darwin's theory of evolution. 18. What are the characteristics of Darwin's concept of perpetual change? 19. Where did Darwin travel to develop his theory of evolution? 20. Know the elements used for radiometric dating. 21. Be able to describe evolutionary trends. 22. Know the characteristics of Darwin's concept of common descent with modification 23. Know factors that can alter integrity of fossil records. 24. Be able to identify characteristics of geological times. 25. Be able to describe the appearance and extinction of new species. 26. Is the wing of a bat homologous to the wing of a bird?
Explanation / Answer
1. A total of 35 phyla of animals known to zoologists.
3. Species that are grouped into a single group because of the similarity in accumulated anagenetic change when compared to their ancestors. Example, Birds, Mammals, etc.
4. Symmetry in animals:
i) Asymmetry : Body cannot be cut into 2 equal parts. Example: Ameoba
ii) Spherical Symmetry : Concentrically arranged body parts around a spherical body. Example: Helizoans
iii) Radial Symmetry: If the body produces two antimeres, upon cutting through the oro-aboral axis, then it is Radial Symmetry. Example: Hydra
iv) Biradial symmetry : Organisms having two planes of symmetry. Example: Ctenophores
v) Bilateral symmetry: Organisms haiving only one plane of symmetry. Example: Triploblastic animals
5. Plane of symmetry: Planes that separates an animal body into two equal mirror parts.
6. Characteristics of bilateral symmetry:
7. Characteristics of coelom:
8. Deuterostomes: Animals in which blastopore forms the rectum after which mouth is formed.
Protostomes: Animals in which blastopore forms the mouth after which rectum is formed.
Metamerism: Body formed by serial repetition of compartments.
Paedomorphosis: Juvenile structure are retained in mature stage when the rate of reproductive development is faster than somatic development.
Heterochrony: Evolutionary changes in the rate or timing of developmental events.
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