Why is the endodermis essential in the root but not in the stem? In the summer o

Question

Why is the endodermis essential in the root but not in the stem?

In the summer of 1998, after extrely hot, dry weather, the Georgia corn harvest was expected to be reduced by at least 25%. Using your knowledge of the dual functions of guard cells relative to water retention and gasexchange, explain the reduction in photosynthetic productivity.

Plant cells have cell walls and animal cells do not. How does this difference relate to differences in plant andanimal function?

Table 20.2 – Structure and Function of Plant Cells

Cell Type Structure Function Plant Organ Epidermis Guard Cells Parenchyma Collenchyma Sclerenchyma Tracheids Vessels Sieve Tubes Endodermis Primary Meristems Vascular Cambium Pericycle Periderm Ray Parenchyma

Explanation / Answer

Why is the endodermis essential in the root but not in the stem?

Answer:
The endodermis in the root prevents nutrients from leaving the plant structure and returning to the soil.The cells in the endodermis helps in water and nutrient retention by preventing nutrients from the xylem to diffuse back into the soil. The stem is not involved in absorption of water or nutrient hence doesn’t need endodermis.

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