Endodermis is not differentiated in
(a) monocot root
(b) dicot roots
(c) monocot stems
(d) dicot stem

Options

A. monocot root
B. dicot roots
C. monocot stems
D. dicot stem.

Answer

To determine where the endodermis is not differentiated, we need to analyze the options provided:

1. **Monocot Root**: In monocot roots, the cortex is well differentiated. The endodermis forms from the differentiation of the cortex. Therefore, the endodermis is present and differentiated in monocot roots.

2. **Dicot Roots**: Similar to monocot roots, dicot roots also have a well-differentiated cortex. The endodermis is formed from the differentiation of the cortex in dicot roots as well. Hence, the endodermis is present and differentiated in dicot roots.

3. **Monocot Stems**: In monocot stems, the cortex is generally undifferentiated. This means that the cortex does not form distinct layers like in roots. As a result, the endodermis is not formed as a differentiated layer in monocot stems. Thus, the endodermis is not differentiated in monocot stems.

4. **Dicot Stems**: In dicot stems, the cortex is well differentiated into distinct layers, which includes the formation of the endodermis. Therefore, the endodermis is present and differentiated in dicot stems.

Based on the analysis, the correct answer is:

**(c) monocot stems** - The endodermis is not differentiated in monocot stems.