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Question
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.
Solution
- 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.
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Characters | Dicot leaf | Monocot leaf |
Stomata | ||
Intercellular space | ||
Venation | ||
Vascular bundle | ||
Mesophyll cells |