Animal Tissues: Connective Tissue MCQs Quiz | Class 9
Practice this Class IX Science (Code 086) quiz from Unit II: Organization in the Living World. This test focuses on Animal Tissues, specifically Connective Tissue, covering its functions and examples like blood and bone. Attempt all 10 questions, check your score, and download the PDF answer sheet for revision.
Overview of Connective Tissue
Connective tissues are the most abundant and widely distributed tissues in the animal body. Their primary role is to bind, support, and separate other tissues or organs. The cells of connective tissue are loosely spaced and embedded in an intercellular matrix. This matrix may be jelly-like, fluid, dense, or rigid depending on the function.
Types of Connective Tissue
Based on the nature of the matrix and function, connective tissues are classified into several types:
1. Fluid Connective Tissue
- Blood: Consists of a fluid matrix called plasma, in which red blood cells (RBCs), white blood cells (WBCs), and platelets are suspended. It transports gases, digested food, hormones, and waste materials.
- Lymph: A colorless fluid similar to blood plasma but containing less protein; acts as a middleman between blood and tissues.
2. Skeletal Tissue (Supportive)
- Bone: Hard and non-flexible tissue. The matrix is rich in calcium and phosphorus compounds. Bone cells (osteocytes) are embedded in a hard matrix. It forms the framework that supports the body.
- Cartilage: Has widely spaced cells (chondrocytes). The solid matrix is composed of proteins and sugars. It is smoother and more flexible than bone. Found in the nose, ear, trachea, and larynx. It smoothens bone surfaces at joints.
3. Dense Connective Tissue
- Tendons: Connect muscles to bones. They are fibrous, strong, and have limited flexibility.
- Ligaments: Connect bone to bone. They are very elastic and have considerable strength.
4. Loose Connective Tissue
- Areolar Tissue: Found between skin and muscles, around blood vessels, and nerves. It fills space inside organs, supports internal organs, and helps in tissue repair.
- Adipose Tissue: Fat-storing tissue found below the skin and between internal organs. The cells are filled with fat globules. It acts as an insulator.
Comparison: Bone vs. Cartilage
| Feature | Bone | Cartilage |
|---|---|---|
| Nature | Hard and non-flexible | Flexible and elastic |
| Matrix | Rich in Calcium and Phosphorus | Made of Proteins and Sugars |
| Blood Supply | Richly supplied with blood vessels | Lacks blood supply in matrix |
Quick Revision Points
- Plasma: The fluid matrix of blood containing proteins, salts, and hormones.
- Chondrocytes: Cells found in cartilage.
- Osteocytes: Cells found in bone.
- Ligament: Connects Bone to Bone (B-B).
- Tendon: Connects Muscle to Bone (M-B).
Extra Practice Questions
- What is the specific function of platelets in blood?
- Why is bone considered a connective tissue?
- Name the tissue that acts as an insulator for the body.
- Where are Haversian canals found?
- Differentiate between the matrix of bone and blood.
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