Organs MCQs Quiz | Class 9
Class IX Science (Code 086) – Unit II: Organization in the Living World. This quiz covers the topic of Organs, specifically focusing on their definitions and examples within plant and animal systems. Test your understanding of how tissues organize to form functional units. Upon completion, submit your answers to see your score and download the PDF answer key for revision.
Overview of Organs
In the hierarchy of biological organization, an organ is a structure made up of a group of tissues working together to perform a specific function. Organs represent a level of organization higher than tissues but lower than organ systems.
- Cells: The basic unit of life.
- Tissues: Groups of similar cells performing a function.
- Organs: Groups of tissues performing complex functions.
- Organ Systems: Groups of organs working together (e.g., Digestive System).
Examples in Plants and Animals
Both plants and animals possess organs, though they differ significantly in structure and function.
| Feature | Plant Organs | Animal Organs |
|---|---|---|
| Primary Examples | Roots, Stems, Leaves, Flowers | Heart, Brain, Stomach, Skin, Liver |
| Function | Stationary functions (anchorage, photosynthesis) | Active functions (locomotion, digestion, circulation) |
| Tissue Composition | Dermal, Ground, Vascular tissues | Epithelial, Connective, Muscular, Nervous tissues |
Quick Revision Notes
- The Leaf is a plant organ specialized for photosynthesis.
- The Skin is the largest organ in the human body, acting as a protective barrier.
- The Stomach is an organ containing smooth muscle tissue, nervous tissue, and epithelial tissue to digest food.
- Roots are organs responsible for absorbing water and minerals from the soil.
Extra Practice Questions
- Name the plant organ responsible for sexual reproduction. (Answer: Flower)
- Which animal organ filters blood and produces bile? (Answer: Liver)
- True or False: A single tissue can be considered an organ. (Answer: False)
- What organ system does the heart belong to? (Answer: Circulatory System)
- Identify the organ that pumps blood throughout the body. (Answer: Heart)
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