Multiple Choice
In evolutionary biology, which term refers to more primitive features, such as teeth and tails, that appear in ancestral forms but may be lost or modified in descendants?
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21. Evolution
Introduction to Evolution and Natural Selection
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Based on the plant fossil record, which of these events likely occurred most recently?
A
The emergence of vascular tissue in plants
B
The colonization of land by plants
C
The origin of seed plants (gymnosperms)
D
The appearance of flowering plants (angiosperms)
Verified step by step guidance1
Understand the timeline of plant evolution by reviewing the major milestones in the fossil record. These include: colonization of land by plants, emergence of vascular tissue, origin of seed plants (gymnosperms), and appearance of flowering plants (angiosperms).
Recognize that the colonization of land by plants occurred first, as early plants like mosses and liverworts adapted to terrestrial environments.
Next, vascular tissue emerged in plants, allowing them to transport water and nutrients efficiently, which supported the development of larger and more complex plants like ferns.
The origin of seed plants (gymnosperms) followed, providing plants with a reproductive advantage through seeds that could survive harsh conditions.
Finally, flowering plants (angiosperms) appeared most recently in the fossil record, characterized by their ability to produce flowers and fruits, which enhanced pollination and seed dispersal mechanisms.
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