The bifacial vascular cambium evolved first in the progymnosperms.
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Q45: In Pinus, the four-celled pollen grain consists
Q46: Each gymnosperm ovule usually produces several archegonia.
Q47: The tallest vascular plant belongs to the
Q48: Seeds are thought to have evolved before
Q49: In gymnosperms, the ovules abort about 95
Q51: A micropyle is the opening in a
Q52: The gymnosperms most closely resembling angiosperms belong
Q53: The pollen grain is a partly developed
Q54: The microgametophytes of Gymnosperms usually produce at
Q55: Gymnosperms having fan-shaped deciduous leaves belong to
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