Cell Inclusions MCQs Quiz | Class 9
This quiz covers Class IX Science (Code 086), Unit II: Organization in the Living World, specifically focusing on Cell Inclusions and stored materials. Test your knowledge on non-living cell components, reserve foods like starch and glycogen, and secretory products. Click ‘Submit Quiz’ to see your score and download the PDF answer key.
Overview of Cell Inclusions
In the organization of the living world, cells contain not only living organelles (like mitochondria and nucleus) but also non-living substances known as cell inclusions or ergastic substances. These are metabolically inactive materials found in the cytoplasm.
Types of Cell Inclusions
Cell inclusions can be categorized based on their nature and function:
- Reserve Food Materials: Stored nutrients for future use. Examples include starch grains in plants, glycogen granules in animals, and oil droplets (fat) in both.
- Secretory Products: Useful substances secreted by the cell, such as enzymes, nectar, and coloring pigments.
- Excretory Products: Waste materials that the cell expels or stores in vacuoles, such as tannins, gums, latex, and mineral crystals (e.g., calcium oxalate).
Comparison: Organelles vs. Inclusions
| Feature | Cell Organelles | Cell Inclusions |
|---|---|---|
| Nature | Living, active structures | Non-living, inactive substances |
| Function | Perform metabolic activities | Storage or waste products |
| Examples | Nucleus, Mitochondria | Starch, Glycogen, Crystals |
Key Takeaways for Class 9
- Vacuoles: These act as the primary storage sacs for solid or liquid contents, holding cell sap which includes amino acids, sugars, and some proteins.
- Plastids: Leucoplasts are specialized plastids for storage (Amyloplasts for starch, Elaioplasts for oil, Aleuroplasts for protein).
- Identification: Inclusions can often be identified using specific stains (e.g., Iodine turns starch blue-black).
Extra Practice Questions
- What is the function of leucoplasts in plant cells?
- Name one waste product stored in plant vacuoles.
- How does an animal cell store glucose?
- Are cell inclusions metabolically active?
- Where are mineral crystals usually found in a plant cell?
Content created and reviewed by the CBSE Quiz Editorial Team based on the latest NCERT textbooks and CBSE syllabus. Our goal is to help students practice concepts clearly, confidently, and exam-ready through well-structured MCQs and revision content.