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Home Q & A Board Biology-Related Homework Help General Biology
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Carlina864 Carlina864
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6 years ago
Fossils of plants found in deeper geologic layers do not show vascular tissues, while fossils in
  shallower geologic layers include some specimens with and some without vascular tissues. Thus,
  vascular tissue in plants is considered a ____ character.
 
  a. ancestral
  b. mosaic
  c. primitive
  d. derived
  e. physiologically essential

Question 2

The LEAST most parsimonious explanation for the existence of beaks in birds is that
 
  a. they arose once in a common ancestor of beaked groups.
  b. they arose multiple times in different bird lineages.
  c. they are a product of convergent evolution among birds.
  d. they are not a genetically determined trait, and thus independent characters.
  e. they arose one time in one bird lineage
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lizfloyd1lizfloyd1
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6 years ago
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Carlina864 Author
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#2
6 years ago
TYVM
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#3
6 years ago
no worries, happy to help out
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