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The following statements concern organisms called stromatolites.  Which statements are true and which are false? Correct the false statements.   The oldest fossil stromatolites are between 3.5 and 3.9 billion years old.   No stromatolites are alive today.   Ancient stromatolites were composed of microbial mats layered with sediments.   The first stromatolites could fix CO2, but they did not produce O2.   Stromatolites form around deep sea vents.   Another name for stromatolites is “banded iron formations”.

The following statements concern organisms called stromatolites.  Which statements are true and which are false? Correct the false statements.   The oldest fossil stromatolites are between 3.5 and 3.9 billion years old.   No stromatolites are alive today.   Ancient stromatolites were composed of microbial mats layered with sediments.   The first stromatolites could fix CO2, but they did not produce O2.   Stromatolites form around deep sea vents.   Another name for stromatolites is “banded iron formations”.

Biology: The Dynamic Science (MindTap Course List)
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter25: The Origin Of Life
Section: Chapter Questions
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16) The following statements concern organisms called stromatolites.  Which statements are true and which are false? Correct the false statements.

 

  1. The oldest fossil stromatolites are between 3.5 and 3.9 billion years old.

 

  1. No stromatolites are alive today.

 

  1. Ancient stromatolites were composed of microbial mats layered with sediments.

 

  1. The first stromatolites could fix CO2, but they did not produce O2.

 

  1. Stromatolites form around deep sea vents.

 

  1. Another name for stromatolites is “banded iron formations”.  

 

 

17) Multicellularity is an important evolutionary innovation in the history of life on Earth. For the following statements, designate which is true (T) and which is false (F). Correct the false. 

 

  1. Multicellularity has evolved independently a few times in the history of life.

 

  1. Multicellular members of domain Eukarya arose through the process of endosymbiosis.

 

  1. Multicellular organisms have cells specialized for different functions, with each cell     type having a unique genetic sequence.

 

  1. Cell differentiation occurs in unicellular organisms but not in multicellular organisms.

 

  1. Multicellular organisms are absent from the domain Archaea.
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