Figure 2: The image above shows a cross section of the stem of a dicot plant (left) and monocot (right). Palisade parenchyma cells are long column like or pillar like cells present towards the upper surface of a dicot leaf along with spongy parenchyma layers. We will discuss each of them in the following. 2. Note that the dicot seed lacks endosperm, and the monocot does not have the hilum that is present in the dicot seed. A monocot root shows 5 distinct regions. It bears unicellular epidermal root hairs with less cutin and more cuticles. 11. Difference Between Monocot and Dicot Stem. 5 seed monocot There is only one cotyledon. Next . The leaf structure, the stem structure and the root structure of monocots plants and dicot plants possess many differences. The tissue of monocot leaf consists of only one kind of cells that are small oval or spherical or irregular shaped spongy parenchyma cells with chloroplasts and chlorophyll. A leaf with a pinnated pattern (like a feather) has a central vein running down the middle of the leaf with other veins branching off to either side of it. The plants having seeds with two cotyledons are known as dicots, whereas monocots are the plants whose seeds have a single cotyledon. Pericycle is present. Activity of the cambial ring. Bulliform cells are absent in the epidermis. These parts are: Epiblema: This is the single outermost layer of the root made entirely from parenchymatous cells and does not have any intercellular space. The cuticle is present uniformly on the outer and inner surface. A monocot leaf possesses stomata on both the epidermis layers and they generally have undifferentiated mesophyll. In monocot, stem cambium is present in between xylem and phloem. There is also secondary growth, more evident in dicots. Email This BlogThis! Difference # Monocot Root: 1. Unlike a dicot leaf, where stomata are found in greater numbers in the abaxial epidermis, in a monocot leaf, stomata are present on both surfaces of the epidermis. 6 stem dicot The vascular bundles form a ring around the periphery of the ground tissue. epdermis; medullary rays; vascular bundles; Previous. (ii) Spongy parenchyma : It is found below palisade parenchyma and are spherical or oval with intercellular spaces. i.e. In monocot leaf, mesophyll tissue is not differentiated into palisade parenchyma and spongy parenchyma as in the case of a dicot leaf. This is the main reason behind dark green colour at upper side of a dicot leaf. These parts are: Epiblema: This is the single outermost layer of the root made entirely from parenchymatous cells and does not have any intercellular space. Legumes (like peanuts, beans, lentils), lettuce, mint, tomato, and the like are typical examples of dicots. Phloem parenchyma is present. 7. Cortex has collenchymatous hypodermis regularly or as discontinuous patches. Sunflower and Cucurbita are examples of dicot stems. Monocot leaves have veins that are parallel to one another through the length of the leaf and do not branch. ... Mesophyll is not differentiated into palisade and spongy parenchyma. Epiblema or Epidermis– is a single layered, thin walled colorless, polygonal without intercellular spaces, with presence of unicellular root hairs hence referred to as rhizoids or piliferous layer.The root hairs and epidermal cells take part in the absorption of water and minerals from the soil. Anatomy of Dicot and Monocot Root. Comparison Chart; Definition; Diagram; Anatomy Anatomy of Dicot and Monocot Root. Whereas in Dicot Root, Xylem and phloem are limited in numbers. 10. Dicot leaves have large intercellular spaces in them. Dicot and monocot stems are quite different from each other. 9. phloem parenchyma is absent. This reticulate venation pattern generally has one of two appearances. • Palisade parenchyma • Adaxially placed • Elongated cells • Vertically arranged and parallel to each other 7. 2. While, monocot root contains xylem and phloem in another manner, forming a circle. 4. Monocot leaf. It has xylem and phloem in sporadic manners set in a ring-like formation. Leaves are very important vegetative organs because they are mainly concerned with photosynthesis and transpiration. 8 leaf monocot The vascular bundles in present in the leaf are evenly spaced. 4. Medullary rays are present. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Stomata are present only on the lower epidermis. (i) Palisade parenchyma : These are elongated columnar cells without intercellular spaces. In monocot roots, passage cells are absent in endodermis. Dicot leaves are not as linear in shape as monocot leaves, and their vascular structures form net-like veins, instead of parallel ones. 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