progressive evolution

views updated May 08 2018

progressive evolution Steady, long-term improvement of evolutionary grade, which has allowed plants and animals to become ever more independent of the aquatic environment in which they first evolved. For example, the sequence bryophyte to pteridophyte to gymnosperm to angiosperm represents a progressive evolutionary trend.

progressive evolution

views updated Jun 11 2018

progressive evolution A steady, long-term improvement of evolutionary grade, which has allowed plants and animals to become ever more independent of the aquatic environment in which they first evolved. For example, the sequence bryophyte, pteridophyte, gymnosperm, angiosperm represents a progressive evolutionary trend.

progressive evolution

views updated Jun 11 2018

progressive evolution A steady, long-term improvement of evolutionary grade, which has allowed plants and animals to become ever more independent of the aquatic environment in which they first evolved. For example, the sequence bryophyte, pteridophyte, gymnosperm, angiosperm represents a progressive evolutionary trend.

progressive evolution

views updated May 14 2018

progressive evolution A steady, long-term improvement of evolutionary grade, which has allowed plants and animals to become ever more independent of the aquatic environment in which they first evolved.

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progressive evolution

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