Plant Tissues: Meristematic Tissue MCQs Quiz | Class 9
Class IX Science (Code 086) – Unit II: Organization in the Living World. This quiz focuses on Plant Tissues, specifically Meristematic Tissue, covering its types and role in plant growth. Attempt these 10 MCQs to test your knowledge, then submit to check your score and download the PDF answer sheet.
Topic Overview: Meristematic Tissue
In Class 9 Science, Unit II explores the organization in the living world, starting from cells to tissues. Plant tissues are broadly classified into Meristematic (dividing) and Permanent (non-dividing) tissues. Meristematic tissues are crucial for the growth and development of plants.
Key Characteristics
- Active Division: Cells are in a state of continuous division.
- Cell Structure: Cells are small, have thin cellulose walls, and possess a dense cytoplasm.
- Nucleus: They contain a large, prominent nucleus.
- Vacuoles: Usually absent or very small because the cells are metabolically very active.
- Intercellular Spaces: Absent; cells are compactly arranged.
Types of Meristematic Tissue
Based on their location in the plant body, meristems are classified into three types:
| Type | Location | Function |
|---|---|---|
| Apical Meristem | Growing tips of stems and roots. | Increases the length of the stem and root (Primary Growth). |
| Lateral Meristem | The girth of the stem or root (Cambium). | Increases the diameter or girth (Secondary Growth). |
| Intercalary Meristem | Base of leaves or internodes (on either side of the node). | Increases the length of organs like leaves and internodes. |
Quick Revision Points
- Meristematic tissue is the growth tissue of plants.
- Apical meristem = Height/Length.
- Lateral meristem = Girth/Thickness.
- Once meristematic cells lose the ability to divide, they differentiate into permanent tissues.
Extra Practice Questions
- Q: Why do meristematic cells lack vacuoles?
A: Because they are full of cell sap and actively dividing, requiring dense cytoplasm rather than storage. - Q: What is the specific name of the lateral meristem in woody plants?
A: Cork cambium or vascular cambium. - Q: Where would you find the intercalary meristem in grass?
A: At the base of the internodes. - Q: Which tissue is responsible for the repair of injured parts in plants?
A: Meristematic tissue. - Q: How does the cell wall of a meristematic cell differ from a sclerenchyma cell?
A: Meristematic cells have thin primary walls, while sclerenchyma has thick, lignified secondary walls.
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