Hibiscus tea set. The epidermis also secretes a waxy substance called the cuticle. The leaf is one of the most important parts of a plant . c) Palisade Mesophyll: Tightly packed upper layer of chloroplast containing cells. Now, draw 4 U shapes in between the ribs on the leaf, and connect these shapes with zig-zagged lines. The leaf is the site of photosynthesis in plants. Some flower plants have different parts fused together. Some important examples are Zea mays, sugarcane, wheat, banana etc. Definition of a Leaf: The leaf is a flattened, lateral outgrowth of the stem in the branch, developing from a node and having a bud in its axil. The leaf is one of the most important part of the plants because it is the one which is in charge of accomplishing the photosynthesis, the respiration and transpiration. There are four seed parts that need to be labeled along with a word bank at the bottom. Write briefly on the role of the endothecium. These stipules are situated between the petiole and the axis, e.g., Gardinia, Tabernaemontana etc. In this type the main veins arise from the tip ‘of the petiole and proceed (diverge) towards the margin of the leaf blade in a more or less parallel manner as in fan palms such as palmyra palm. Describes the structure and function of leaves. Edible Plants Clipart. The D n root lattice – that is, the lattice generated by the D n roots – consists of all integer vectors whose components sum … the mid­rib produces secondary axes which bear the leaflets, it is said to be bipinnate, as in dwarf gold mohur (Caesal-pinia), gum tree (Acacia), sen­sitive plant (Mimosa), etc. What are the general characters of bryophytes? Also draw the stem as long as you can, you will resize it after. Welcome to BiologyDiscussion! Leaf modifications Whole leaves or parts of leaves are often modified for special functions, such as for climbing and substrate attachment, storage, protection against predation or climatic conditions, or trapping and digesting insect prey. the secondary axes produce the tertiary axes which bear the leaflets, the leaf is said to be tripin­nate, as in drumstick (Moringa), and Oroxylurn. Two small and dry scales arising laterally from the base of the leaf e.g. According to their shape, position, colour and size, stipules are of the following kinds: These are two free stipules, usually small and green in colour, borne on the two sides of the leaf-base, as in China rose (Hibiscus), cotton, etc. Leaf base has two small leaf … 4.7). I mark the top and bottom borders of the leaf. 2. Parts of a leaf: A leaf may seem simple in appearance, but it is a highly-efficient structure. Usually it protects a small bud in its axil. Stipules are the lateral appendages of the leaf borne at its base. The cotyledon is described as a seed leaf that E-unit: Parts of the Seed Page 3 AgEdLibrary.com ... label the parts of the seeds of a monocotyledon and a dicotyledon on this drawing. ADVERTISEMENTS: Read this article to learn about Structure of a Typical Leaf ! Most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. The leaf takes in sunlight, receives water and nutrients from the rest of the plant, and brings in carbon dioxide and produces oxygen to create food for the plant. The parts of a flower, however many there are, are never defined by their function. Petiole is the leaf stalk that pushes the lamina to secure proper sunlight. Label the parts ‘M’, ‘N', ‘O' and ‘P' in the given diagram. Internal Structure of the Leaf of a Typical Dicotyledonous Plant. 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