Ssc Biology Chapter 2 Hand Note Exclusive Review

The "Control Center" containing genetic material (DNA/RNA). 2. Plant Tissues

forms the foundation of understanding life. It focuses on the structural and functional units of living organisms—cells, and how these cells organize into tissues to perform specific functions. 1. The Cell: The Unit of Life

These are specialized structures inside the cell that perform specific tasks. Only in plants.

with a focus on plastids, cell walls, and vacuoles. ssc biology chapter 2 hand note exclusive

Colorless; store food (starch, lipids, proteins). Found in roots and underground stems.

Colorless, stores food.

Living, thin-walled, with intercellular spaces. Functions in photosynthesis and storage. The "Control Center" containing genetic material (DNA/RNA)

Dead cells with highly thickened, lignified walls. They provide ultimate mechanical strength. Divided into elongated Fibers and hard, gritty Sclereids (stone cells).

Transports prepared food from leaves to the rest of the body. 4. Animal Tissues Categorized into four main types: Epithelial: Covers organs and skin.

Transports water and minerals upward. Components: Tracheids, Vessels, Xylem Parenchyma, and Xylem Fiber. It focuses on the structural and functional units

Living, thin-walled, intercellular spaces present. Found everywhere in the plant body. If they contain chloroplasts, they are called Chlorenchyma (perform photosynthesis). In aquatic plants, large air spaces make them Aerenchyma (provide buoyancy).

Here are some example MCQs to include in your notes:

For Multiple Choice Questions (MCQs), remember that lysosomes dissolve their own cell when it gets damaged or aged through a process called autolysis.

Remember that carbohydrates and fats are energy producers, while proteins control growth and development. GCSE Double Award Science Biology Unit 2 - CCEA