Multiple Choice
Which adaptation is found in seedless vascular plants but not in earlier non-vascular plants?
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28. Plants
Seedless Vascular Plants
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Which two characteristics do seedless vascular plants have that nonvascular plants do not have?
A
Seeds and flowers
B
Chlorophyll b and alternation of generations
C
Vascular tissue (xylem and phloem) and true roots
D
Ability to fix atmospheric nitrogen and produce cones
Verified step by step guidance1
Understand the distinction between seedless vascular plants and nonvascular plants. Seedless vascular plants, such as ferns, have vascular tissue (xylem and phloem) that allows them to transport water and nutrients efficiently, while nonvascular plants, like mosses, lack this specialized tissue.
Recognize that vascular tissue is a key adaptation in seedless vascular plants. Xylem transports water and minerals from the roots to the rest of the plant, while phloem transports sugars and other organic nutrients produced during photosynthesis.
Identify the presence of true roots in seedless vascular plants. True roots are structures that anchor the plant and absorb water and nutrients from the soil. Nonvascular plants typically have rhizoids, which are simpler structures that lack vascular tissue.
Eliminate incorrect options based on the characteristics of seedless vascular plants. For example, seedless vascular plants do not produce seeds, flowers, cones, or fix atmospheric nitrogen.
Conclude that the defining characteristics of seedless vascular plants compared to nonvascular plants are the presence of vascular tissue (xylem and phloem) and true roots.
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