Macroalgae can be distinguished from true plants because they lack true roots, leaves, and stems. The holdfast is the root-like, anchoring structure of many macroalgae.
Seaweeds are macroscopic, multicellular marine macroalgae that are an essential component of the world's coastal ecosystems, providing essential ecosystem services to the in-shore marine environment. There are approximately 10,000 different types of macroalgae.
Seaweed, also known as macroalgae, refers to thousands of different types of macroscopic, multicellular marine algae. Some Rhodophyta (red), Phaeophyta (brown), and Chlorophyta (green) macroalgae are included in the term.
Macroalgae can be distinguished from true plants because they lack true roots, leaves, and stems. The holdfast is the root-like, anchoring structure of many macroalgae.
Macroalgae or seaweeds are distinguished from true plants by the absence of true roots, leaves, or stems.
Therefore, the correct answer is option C. have no true roots, leaves, or stems.
The complete question is:
Macroalgae or seaweeds can be best differentiated from true plants because macroalgae __________.
A. are photosynthetic
B. are prokaryotic
C. have no true roots, leaves, or stems
D. have no chlorophyll
E. are mostly unicellular
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