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प्रश्न
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?
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उत्तर
- Students must have observed monocot stems.
- It is because, monocot stem shows scattered vascular bundles.
- In monocot stem, vascular bundles are closed i.e. without cambium.
- Thus, secondary growth does not occur which is required for an increase in girth. Hence, in spite of having large number of scattered vascular bundles, monocot stems do not grow in girth.
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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.
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.
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.
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 |
