Plant tissue and anatomy class 11 notes

Types of Plant Tissues Plant tissues can be broadly classified based on the ability of the cells to divide into Merismatic tissue and Permanent tissue. What is Dermal Tissue System? Merismatic tissuesconsist of a group of cells that have the ability to divide. These tissues are small, cuboidal, densely packed cells which keep dividing to form new cells. These tissues are capable of stretching, enlarging and differentiating into other types of tissues as they mature. Meristematic tissues give rise to permanent tissues. Merismatic tissues can be of three types depending on the region where they are present: Apical meristems, lateral meristems, and intercalary meristems. Permanent tissues are derived from the merismatic tissues and have lost their ability to divide. They have attained their mature form. They are further classified into two types: Simple and complex permanent tissues. Browse more Topics under Anatomy Of Flowering Plants • • • • • • • • • • Anatomy of Dicotyledonous and Monocotyledonous Plants Permanent Tissues The permanent tissues form the major portion of the plant. Simple Permanent tissues • Parenchyma– These tissues are found in the soft parts of a plant such as the • Collenchyma- Are similar to parenchyma cells with thicker cell walls. They are meant to provide mechanical support to the plant structure in parts such as petiole of the leaf. • Sclerenchyma- The cells of this tissue are dead. They are rigid, contain thick and lignified secondary walls. Their...

\( \newcommand\) • • • • • • Learning Objectives • Describe the difference between meristematic and non-meristematic tissues. • Compare and contrast dermal, ground, and vascular tissue. Plants are multicellular eukaryotes with tissue systems made of various cell types that carry out specific functions. Plant tissues are composed of cells that are similar and perform a specific function. Together, tissue types combine to form organs. Each organ itself is also specific for a particular function. Plant tissue systems fall into one of two general types: meristematic tissue, and permanent (or non-meristematic) tissue. Cells of the meristematic tissue are found in meristems, which are plant regions of continuous cell division and growth. Meristematic tissue cells are either undifferentiated or incompletely differentiated, and they continue to divide and contribute to the growth of the plant. In contrast, permanent tissue consists of plant cells that are no longer actively dividing. Meristematic tissues consist of three types, based on their location in the plant. Apical meristems contain meristematic tissue located at the tips of stems and roots, which enable a plant to extend in length. Lateral meristems facilitate growth in thickness or girth in a maturing plant. Intercalary meristems occur only in monocots, at the bases of leaf blades and at nodes (the areas where leaves attach to a stem). This tissue enables the monocot leaf blade to increase in length from the leaf base; fo...

Plant Tissue Definition Plant tissue is a collection of similar cells performing an organized function for the plant. Each plant tissue is specialized for a unique purpose, and can be combined with other tissues to create organs such as leaves, flowers, stems and roots. The following is a brief outline of plant tissues, and their functions within the plant. Types of Tissue in Plants Meristematic Tissue Meristematic plant tissue is different than all other plant tissue, in that it is the main growth tissue of the plant. All cells originate from one meristem or another. The apical meristem is the plant tissue which drives above ground growth, and decides the direction of the plant. Root meristems dig into the soil in search of water and nutrients. Subapical meristems divide the plant and carry leaves in different directions. Intercalary meristems provide growth from the middle of the plant, to extend the leaves upward into the sunlight. Meristematic plant tissue, at the central point, is undifferentiated and ready to divide into any other type of plant cell. Meristematic cells divide asymmetrically. This means that one plant remains undifferentiated, while the other cell takes on a more specialized form. This cell will then continue to divide and develop into a plant tissue, which can help form a new organ, such as a leaf. In this way meristematic plant tissue is equivalent to animal stem cells. These cells are totipotent or pluripotent, meaning they can divide into many dif...

PLANT ANATOMY Dear Biology Aspirants, Here you can find the direct links to our Plant Anatomy Notes Pages for class 11, class 12, undergraduate and post graduate students. For the easy navigation, the topics were categorized into modules. Please click on the desired topic to access its contents. Feel free to contact the Adminif you have any doubts or quires. You are also requested to visit our Botany PPT and Botany MCQ pages. Sharing is caring… Please, share this page with your friends and colleagues. Plant Anatomy Notes Cell Wall @. Meristem @. @. @. @. @. @. @. @. You may also like NOTES in... Simple Tissue System @. @. @. @. @. @. Complex Tissue System @. @. @. @. @. @. @. @. @. @. @. @. Secretory Tissues @. @. @. Primary Structure @. @. @. @. @. @. @. @. @. Secondary Thickening @. @. @. @. Anomalous Secondary Thickening @. Boerhavia: Anomalous Secondary Growth @. @. Amaranthus / Achyranthes : Anomalous Secondary Growth @. Mirabilis (Nyctaginaceae): Anomalous Secondary Growth @. Bougainvillea (Nyctaginaceae): Anomalous Secondary Growth @. Dracaena Stem: Anomalous Secondary Growth @. Beta vulgaris) @. General Topics @. @. <<< Back to BOTANY Notes You may also like... Explore Easy Biology Class Botany Zoology Biochemistry Cell & Molecular Biology Biotechnology Bioinformatics Biophysics Plant Physiology Physiology & Endocrinology Immunology Microbiology Genetics Embryology Evolution Ecology Research Methodology Biostatistics Physics for Biologists Chemistry for Biologists ...