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प्रश्न
Answer the following question.
Student while observing a slide of leaf section observed many stomata on the upper surface. He thought he has placed slide upside down. Teacher confirmed it is rightly placed. Explain.
उत्तर
- In a dicot leaf, stomata are generally absent on the upper epidermis but are present on the lower epidermis. Thus, the student must have thought that he has placed slide upside down.
- According to teacher, the section was placed rightly, thus the given section must be of monocot leaf.
- It is because in monocot leaf stomata are present on both upper and lower epidermis.
APPEARS IN
संबंधित प्रश्न
Answer the following question.
A fresh section was taken by a student but he was very disappointed because there were only a few green and most colourless cells. Teacher provided a pink colour solution. The section was immersed in this solution and when observed it was much clearer. What is magic?
Answer the following question.
While observing a section, many scattered vascular bundles could be seen. Teacher said, in spite of this large number the stem cannot grow in girth. Why?
Answer the following question.
A student was observing a slide with no label under a microscope. The section had some vascular bundles scattered in the ground tissue. It is a section of a monocot stem! He exclaimed. No! it is a section of fern rachis, said the teacher. Teacher told to observe vascular bundle again. Student agreed, Why?
Draw a neat labelled diagram.
T. S. of Dicot leaf
Draw a neat labelled diagram.
T. S. of dicot stem
Write the information related to the diagram given below.
Identify the following diagram, label it and prepare a chart of characteristics.
Identify the following diagram, label it and prepare a chart of characteristics.
Identify the following diagram, label it and prepare a chart of characteristics.
Distinguish between dicot and monocot leaf on the basis of following characters.
| Characters | Dicot leaf | Monocot leaf |
| Stomata | ||
| Intercellular space | ||
| Venation | ||
| Vascular bundle | ||
| Mesophyll cells |
