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प्रश्न
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 |
उत्तर
| Characters | Dicot leaf | Monocot leaf |
| Stomata | Stomata are restricted to lower epidermis. Guard cells of stoma are kidney-shaped. | Stomata occur on both epidermis. Guard cells of stoma are dumbbell shaped. |
| Intercellular space | More intercellular spaces due to presence of spongy parenchyma | Less intercellular spaces as mesophyll is not differentiated into spongy and palisade tissue. |
| Venation | Reticulate venation | Parallel venation |
| Vascular bundle | Vascular bundles of varying size. The size of the vascular bundles is dependent on the size of the veins which vary in thickness in dicot leaf. | Vascular bundles are nearly of similar size (Except in main veins). |
| Mesophyll cells | Mesophyll tissue is differentiated into palisade parenchyma and spongy parenchyma. | Mesophyll tissue is not differentiated into palisade parenchyma and spongy parenchyma. |
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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.
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?
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 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.
