The second chapter of SSC biology is titled "Structure of Living Organisms." In this chapter, students will learn about the basic structure and organization of living organisms, including cells, tissues, and organs. Understanding the structure and functions of living organisms is crucial for students to grasp various biological concepts and processes.
| Term | Definition | | :--- | :--- | | | The structural & functional unit of life. | | Unicellular | Single-celled organism (e.g., Amoeba , Bacteria). | | Multicellular | Body made of many cells (e.g., Human, Mango tree). | | Tissue | Group of similar cells performing a specific function. | | Organ | Several tissues working together (e.g., Heart, Leaf). | | Cell Wall | Non-living, rigid outer layer of plant cells (made of Cellulose ). | | Protoplasm | Living content of a cell = Cytoplasm + Nucleus. | ssc biology chapter 2 hand note exclusive
The "exclusive" hand notes emphasize the cell as the basic unit of life, detailing both the physical structures and the biochemical processes that sustain them. Cell Theory: The second chapter of SSC biology is titled
Present in animal cells (for division); usually absent in higher plants. 2. Key Organelles and Their Functions | | Unicellular | Single-celled organism (e