Linnean- or rank based classification systems have placed the cycads, ginkgo, conifers and gnetophytes, respectively, into separate categories, of equal ranking (i.e., each gymnosperm group a Phylum or Division). Is the Linnaean classification of each gymnosperm group justifiable

Biology: The Unity and Diversity of Life (MindTap Course List)
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Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
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Chapter22: The Land Plants
Section: Chapter Questions
Problem 12SQ: Which angiosperm lineage includes the most species? a. magnoliids b. eudicots c. monocots d. water...
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Linnean- or rank based classification systems have placed the cycads, ginkgo, conifers and gnetophytes, respectively, into separate categories, of equal ranking (i.e., each gymnosperm group a Phylum or Division). Is the Linnaean classification of each gymnosperm group justifiable, based on the information shown in the figures? 

Angiosperms
Cycads
Ginkgo
Other conifers
Gnetales
Pinaceae
Transcribed Image Text:Angiosperms Cycads Ginkgo Other conifers Gnetales Pinaceae
vessels
double
fertilizátion
tricolpate
pollen (3
apertures)
loss of
swimming
sperm
vessels
loss of swimming sperm
double fertilization
(leading to endosperm)
*fruits
flowers
seeds
conifers
gnetophytes
ginkgo
cycads
amborella
water lilies
star anise group
eudicots
magnoliids
monocots
Transcribed Image Text:vessels double fertilizátion tricolpate pollen (3 apertures) loss of swimming sperm vessels loss of swimming sperm double fertilization (leading to endosperm) *fruits flowers seeds conifers gnetophytes ginkgo cycads amborella water lilies star anise group eudicots magnoliids monocots
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