Discuss the form and function of the ground tissue system
What will be an ideal response?
The ground tissue composes most of the tissues in an herbaceous plant. Parenchyma is the most abundant tissue and consists of loosely packed, thin-walled cells that make up most of the root and stem. The cell walls are thin, and typically unspecialized. Specialized parenchyma cells include those that are photosynthetic and those that store starch (typically in the root). Collenchyma is a stronger tissue, and the cells are often connected end to end to form stringy tissue (e.g., as in celery). Sclerenchyma is the toughest of the ground tissue cells, and often surrounds the vascular tissues to aid support. The cell wall often is often strengthened with lignin, and may contain stone cells or sclerids (as seen in pear fruits and nut shells).
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Which molecule would be an indicator of fungal contamination in a drug preparation?
A. Cellulose B. Collagen C. Chitin D. Deoxyribose E. Lignin Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about fungi? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
At the center of an herbaceous eudicot stem is:
a. pith. b. collenchyma. c. sclerenchyma. d. vascular cambium. e. phloem.
Why is it so difficult to control or eradicate invasive species?
A. Common herbicides will not kill invasive species. B. Removing invasive species manually is time-consuming and difficult. C. Introducing new predators or diseases can be done without affecting the other living organisms in the area. D. Drying them out or depriving them of oxygen can be done without affecting the other living organisms in the area. E. All of the above make it fairly easy to eradicate invasive species.
connective tissues that hold organs in place are called
A. coelom. B. mesenteries. C. polyps. D. gut.