A new dicotyledon vegetable has just been imported into the United States from Ecuador. The edible portion is a succulent stem. When you eat this tasty treat you notice a flexible stringy tissue located just inside the epidermis. Even though this new vegetable is tasty, this "stringy stuff" tends to gets caught in your teeth. Discuss several plant tissues that fit the description of this "stringy
stuff."
What will be an ideal response?
This question is designed to help students to think critically about plant tissues. Probably the best answer is collenchyma. It is often located just inside the epidermis, and tends to be stringy. However, a student could discuss vascular tissue as also being a possibility. In a dicotyledon it is found "close" to the epidermis and can be stringy in nature. Both xylem and phloem are found together so they both should be cited as a unit. Credit may also be given for schlerenchyma fiber. But a student needs to be careful, because too much schlerencyma would cause the vegetable to be less edible. Also the schlerenchyma will probably be found associated with the vascular bundle.
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