Leaf base has two small leaf-like structure called stipules. So, the correct answer is ‘Petiole’ Q2. Describes how leaves are made of several different kinds of specialized tissues. stem - (also called the axis) the main support of the plant. shows prominent ridges and grooves and reveals the following tissues: Epidermis: 1. The epidermis aids in the regulation of gas exchange. Structure of a Typical Leaf. Monocot and Dicot Leaf: Type # 1. Describes the structure and function of leaves. Anatomy of Dicot Leaf. The internal structure of a leaf: Leaves are very important structures. Q1. Some leaves are attached to the plant stem by a petiole. Identifying characteristics of the internal structure of dorsiventral or dicot leaf: (i) It is green, compressed with a wide lamina. axil - the angle between the upper side of the stem and a leaf or petiole. cv+ìcÏe V lìsaåe pvsophy//4— veins a-f-ffo¿s ! (iii) Mesophyll tissue is present and is composed of palisade parenchyma and spongy parenchyma. leaf apex - the outer end of a leaf; the end that is opposite the petiole. The outermost layer of the leaf is the epidermis. % Progress . midrib - the central rib of a leaf - it is usually continuous with the petiole. List the la ers of the leaf starting at the upper cuticle all the way to the lower cuticle. They absorb sunlight energy to make food. Blade – the main collecting structure of the leaf; Has a large, broad surface Has many layers which help the plant move and store photosynthetic materials and by - products Model 2 — Cross Section of the Internal Structure of a Leaf Cuticle Upper epidermis Chloroplast palisade mesophyll Air Space Lower epidermis Vein Spongy mesophyll Cuticle Guard cell f Stoma 8. The presence of pigment ‘chlorophyll’ makes the leaf green in color that helps to prepare food in plants through photosynthesis.Collectively, green … Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf. The stalk of leaf is called A. Sessile B. Plumule C. Stipule D. Petiole. It is the structure through which products of photosynthesis are moved from leaves to the entire plant. Petiole – is known as the leaf stem; It is not exactly like a stem, but it does hold xylem & phloem; Holds the blade away from the stem 7. A leaf is a plant organ that is flat, thin and usually green in color. They are the plant’s food factories. Two epidermal […] The upper layer of a leaf is called the upper epidermis. Click Create Assignment to assign this modality to your LMS. Anatomy of Monocot Leaf: Triticum-Leaf: ADVERTISEMENTS: T.S. Answers: Petiole is the stalk of a leaf that attaches the blade to the stem. The structure of a leaf is described below in detail : Parts of a Leaf. Leaf Base: This is the part where a leaf attaches to the stem. ADVERTISEMENTS: The following points highlight the top two types of monocot and dicot leafs. Epidermis. In petiolate leaves, the leaf stalk is long. Under a powerful microscope, we can see three main internal parts of a leaf, i.e. epidermis, mesophyll, and vascular bundle. (ii) Leaf-blade is enriched with reticulate venation. Botanists call the upper side the adaxial surface (or adaxis) and the lower side the abaxial surface (or abaxis). It is … The types are: 1. : petiole - a leaf stalk; it attaches the leaf to the plant. Anatomy of Monocot Leaf 2. Leaf Structure and Function. The internal structure of cacti stems conforms to the pattern of broad-leaved angiosperms; a cambium layer of dividing cells, located between the woody inner tissues and those near the outside of the stem, is present. 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