Featured post

ANATOMY OF FLOWERING PLANTS

-
Image
  What is Plant Anatomy? Plant anatomy is the study of internal structure and organization of tissues in plants. It helps in understanding: Functional adaptation Transport system Growth patterns Tissue Organization in Flowering Plants Flowering plants have three major tissue systems :  Epidermal Tissue System Components: Epidermis Single layer of compact cells No intercellular spaces Covered by cuticle (except roots) Cuticle Made of cutin Prevents water loss Stomata Present mainly on leaves Composed of guard cells Regulate: Gas exchange Transpiration Root hairs Extensions of epidermal cells Increase surface area for absorption Trichomes (in stem) Hair-like structures Protection + reduce transpiration  Functions: Protection Water conservation Gas exchange 🌿 B. Ground Tissue System  Types of Ground Tissue: 1. Parenchyma Living cells, thin cell wall Large vacuole Functions: Storage Photosynthesis ( chlorenchyma ) Air storage ( aerenchyma ) 2. Collenchyma Living cell...
Post a Comment

class 10 important diagram practicals

-

 








Comments

Post a Comment

Popular posts from this blog

CELL STRUCTURE AND FUNCTION NCERT HIGHLIGHTS

-
 Cell Structure and Functions: Cytology, the Science of Cells: Let's begin with cytology, which is the scientific study of cells. It delves into the form, structure, and composition of these tiny units of life. The Cell: Life's Building Block: A cell is the fundamental structural and functional unit of life. Think of it as the building block of living organisms. In unicellular organisms like amoeba and bacteria, a single cell performs all essential life functions. Cell Theory Founders: Back in the day, Anton Von Leeuwenhoek was the first to observe and describe live cells under a microscope. Later, Robert Brown discovered something crucial, the nucleus. Cell Theory, the Bedrock of Biology: In the mid-19th century, Matthias Schleiden and Theodore Schwann put forth the cell theory. It stated that all living organisms are made up of cells and their products. Furthermore, they emphasized that all cells come from pre-existing cells. This theory was later refined by Rudolf Virchow. ...
Read more

THE FUNDAMENTAL UNIT OF LIFE

-
Image
 What are Living Organisms Made Up of?  living organisms are made of cells. cells are capable of independent existence and performing the essential function of life. viruses  are non cellular because they lack cell like structures. robert hook  first observe cork cells under  microscope  in 1665 leeuwenhook first oberves single celled organism in 1674 pasteur discovered microbial fermentation in 1856 pasteur disapproved spontaneous generation in 1862 koch determine causative agents for many bacterial infection during period of 1876-1906. smallest cell: mycoplasma (PPLO- pleuro pneumonia like organism, about 10 micrometer in size) longest cells : nerve cell largest cell: ostrich cell What is a Cell Made Up of? What is the Structural Organisation of a Cell? protoplasm : nucleus+ cell membrane +cytoplasm  cytoplasm: all content except nucleus (contain organalles) nucloplasm: nucleus+ its content cytosol : fluid where cytoplasm suspended. PLASMA MEMBRANE ...
Read more

ECOSYSTEM REVISION NOTES

-
Image
  Structure of the Ecosystem: Ecosystems are functional units of nature where living organisms interact with each other and the physical environment. They can vary in size from small ponds or forests to large-scale systems like the biosphere. Ecosystems can be categorized as terrestrial (land-based) or aquatic (water-based). Examples of terrestrial ecosystems include forests, grasslands, and deserts, while aquatic ecosystems include ponds, lakes, wetlands, rivers, and estuaries. Man-made ecosystems, such as crop fields and aquariums, can also exist. Input, Transfer, and Output of Energy: Ecosystems rely on the input of energy, primarily from the sun, which drives the process of photosynthesis in plants. The energy captured by plants is transferred through the ecosystem in the form of food. Energy flow occurs through the food chain or food web, where organisms consume other organisms. Nutrients, such as carbon, nitrogen, and phosphorus, also cycle through the ecosystem, facilitating...
Read more