Evolution Name Homework 2 Chapters 3 and 4 Fill in in the blank with the letter

Question

Evolution Name Homework 2 Chapters 3 and 4 Fill in in the blank with the letter for the appropriate term. 1. vertebrates with four limbs (or, like snakes, descended from · vertebrates with four limbs). Living members include mammals, birds, A. Burgess Shale B. Chordates C. Ediacaran fauna 2. Layered structures formed by the mineralization of bacteria D. Hominins E. Lagerstätten (singular, 3. Microorganisms lacking a cell nucleus or any other membrane- Lagerstätte bound organelles. These microorganisms comprise two evolutionarily distinct groups, the bacteria and the archaea. FProkaryotes G. Radiometric dating 4. Atechnique that allows geologists to estimate the precise ages at H. Stromatolites which one geological formation ends and another begins I. Tetrapods J. Trilobites --Extinct marine arthropods that diversified during the Cambrian period and gradually died out during the Devonian period 5, 6. Members of a diverse phylum of animals that includes the vertebrates, lancelets, and tunicates. As embryos, they all have a notochord (a hollow nerve cord), pharyngeal gill slits, and a postanal tail. Many present-day animals lose or modify these structures as they develop into adults 7. Sites with an abundant supply of unusually well-preserved fossils-often including soft tissues-from the same period of time -A group of animal species that existed during the period just before the Cambrian, between 575 and 535 million years ago. These animals included diverse species that looked like fronds, geometrical disks, and blobs covered with tire tracks. 8. A group including humans as well as all species more closely related to humans than to chimpanzees. Within this group, humans are the only surviving members. A Lagerstätte in Canada that preserved fossils from the Cambrian period 9.

Explanation / Answer

Answer:

1. I

2. H

3. F

4. G

5. J

6. B

7. E

8. C

9. A

  

  

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