The "Powerhouse." Site of oxidative phosphorylation and ATP production. Chloroplast: Green, conducts photosynthesis. Chromoplast: Coloured (red/yellow), attracts pollinators. Leucoplast: Colourless, stores food. Ribosomes: Protein factories of the cell. Golgi Body: Packaging and secretion center. Lysosomes: Contains digestive enzymes; acts as the "suicide bag." 3. Plant Tissues Simple Tissue: Made of one type of cell. Parenchyma: Thin-walled, living, stores food. Collenchyma: Thickened at corners (pectin), provides flexibility. Sclerenchyma:
Connects and supports (e.g., Blood, Bone, Cartilage). Note: Blood is a fluid connective tissue. ssc biology chapter 2 hand note exclusive
The nucleus controls all metabolic activities of the cell. A well-developed nucleus consists of four distinct parts: The "Powerhouse
I can customize the next set of hand notes to fit your exact study schedule. Share public link Leucoplast: Colourless, stores food
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Forms the internal framework. Includes Bone (hard, rigid, matrix rich in calcium) and Cartilage (flexible, semi-solid matrix; e.g., pinna of the ear, tip of the nose).
Sclereids (short, gritty stone cells found in pear fruits) and Fibers (elongated, pointed cells). B. Complex Tissues (Vascular Bundles)