Notes Ghar

                                                                CHAPTER-07 STRUCTURAL ORGANIZATION IN ANIMALS In multicellular organism a group of similar cells along with intercellular substances perform a specific function. Such organization is called tissue. Epithelial Tissue : This tissue provides covering or lining for some part of the body. Cells are compactly packed without intercellular space. Simple epithelium is composed of single layer of cells and function as lining of body cavities, ducts and tubes. The compound epithelium consists of two or more than two layers of cells and has protective function. The squamous epithelium is made up of single layer of flattened cells with irregular boundaries. They are present in lining of blood vessels, air sacs of lungs. Cuboidal epithelium is made up of single layered cube-like cells and found in ducts of glands and tubular part of nephron of kidney for absorption and secretion. Columnar epitheliums are made up of tall and slender cell

                                                           CHAPTER-05 MORPHOLOGY OF FLOWERING PLANTS Morphology is the branch of biological science that deals with the study of form, size, colour, structure and relative position of various parts of organisms. Importance of morphology- Knowledge of morphology is essential for recognition or identification of plants. It gives information about the range of variations found in species. Deficiency and toxicity symptoms are morphological changes that occur in response to shortage or excess of minerals. Parts of Flowering Plants - All the flowering plants have roots, stem, leaves, flower and fruits. The underground parts of flowering plant are the  root system  and the portion above the ground forms the  shoot system . The Root In Dicotyledons, elongation of radicle forms the primary roots which bears lateral roots of several orders called secondary roots, tertiary roots, etc. Primary roots along with lateral roots forms the  Tap root system