Large brown algae called kelps can grow as tall as 25 m. Kelps consist of a holdfast
Chapter 29, Problem 13(choose chapter or problem)
Large brown algae called kelps can grow as tall as 25 m. Kelps consist of a holdfast anchored to the ocean floor, blades that float at the surface and collect light, and a long stalk connecting the blades to the holdfast (see Figure 25.14). Specialized cells in the stalk, although nonvascular, can transport sugar. Suggest a reason why these structures analogous to sieve-tube elements might have evolved in kelps.
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