In Class 9 Biology (Tissues), plant tissues are divided into two main categories: Meristematic Tissue (which constantly divides and grows) and Permanent Tissue.
Permanent Tissue: Plant cells that no longer divide.
Differentiation: The process where dividing cells take a permanent shape and job.
Simple Tissue: Parenchyma, Collenchyma, Sclerenchyma.
Complex Tissue: Xylem (Water transport) and Phloem (Food transport).
Permanent Tissues are mature plant tissues that have lost their ability to divide and grow.
Permanent tissues are further divided into two types based on their structure:
Simple Permanent Tissue: These are made up of only one type of cell that look and function the same. Their main jobs are protection, support, and storing food.
Complex Permanent Tissue: These are made up of more than one type of cell working together as a single unit. Their main job is transportation.
Permanent tissues are groups of mature plant cells that have lost their ability to divide. They take on specific, permanent roles in the plant, such as storing food, providing support, or transporting water and nutrients.
Where are Air Sacs Present? Birds vs. Humans
Learn where air sacs are present in biology. Discover the alveoli in the human lungs and the unique, highly efficient air sac respiratory system found in birds.
Where is Apical Meristem Found? (Plant Tissues)
Learn where apical meristem is found in plants. Class 9 Biology guide on meristematic tissue, its location at root and shoot tips, and its role in plant growth.
Name the Region Where Parenchyma Tissue is Present
Learn where parenchyma tissue is found in plants. Understand its location in leaves (mesophyll), stem cortex, and roots, with Class 9 notes.
Which Substances Show the Tyndall Effect?
Learn which substances show the Tyndall effect. Understand why colloids scatter light but true solutions don't, with examples of milk, smoke, and fog.
Who Discovered the Cell
Robert Hooke discovered the cell in 1665 using a self-made microscope while observing cork. He named it 'cell'. Anton van Leeuwenhoek observed living cells. Class 8–9 Biology NCERT.
Turn this guide into revision flashcards, a practice exam, or an AI-generated podcast — free, no signup required.