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Q10(a):
Name the following. (a) Tissue that forms the inner lining of our mouth.
Solution :
Step 1: Identification of the Biological Structure
The inner lining of the mouth, esophagus, and the lining of the blood vessels are composed of a specific type of epithelial tissue characterized by thin, flat cells. Based on the classification of animal tissues [Per the hierarchy of Animal Epithelial Tissues], this structure is identified as Squamous Epithelium.
Step 2: Structural and Functional Analysis
- Morphology: The cells are extremely thin, flat, and form a delicate lining. The nucleus is typically disc-shaped and centrally located.
- Arrangement: When these cells are arranged in a single layer, they are termed Simple Squamous Epithelium. When they are arranged in a pattern of layers to prevent wear and tear, they are termed Stratified Squamous Epithelium.
- Contextual Application: The inner lining of the mouth experiences continuous mechanical stress due to the intake of food and articulation of speech; therefore, it is specifically lined by Stratified Squamous Epithelium to provide protection against abrasion [By biological functional adaptation principle].
Visual Representation: Squamous Epithelial Structure
Step 3: Justification
The squamous epithelial tissue is selected because of its primary role in protection. In the oral cavity, the stratified arrangement is essential to protect underlying tissues from mechanical injury caused by the movement of food particles [Per histological analysis of mammalian integumentary and mucosal systems].
Final Solution: The tissue that forms the inner lining of the mouth is Squamous Epithelium (specifically Stratified Squamous Epithelium).
More Questions from Class 9 Science Tissues Exercises
- Q1: Define the term “tissue”.
- Q2: How many types of elements together make up the xylem tissue? Name them.
- Q3: How are simple tissues different from complex tissues in plants?
- Q4: Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.
- Q5: What are the functions of the stomata?
- Q6: Diagrammatically show the difference between the three types of muscle fibres.
- Q7: What is the specific function of the cardiac muscle?
- Q8: Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.
- Q9: Draw a labelled diagram of a neuron.
- Q10(b): Name the following. (b) Tissue that connects muscle to bone in humans.
- Q10(c): Name the following. (c) Tissue that transports food in plants.
- Q10(d): Name the following. (d) Tissue that stores fat in our body.
- Q10(e): Name the following. (e) Connective tissue with a fluid matrix.
- Q10(f): Name the following. (f) Tissue present in the brain.
- Q11: Identify the type of tissue in the following: skin, bark of tree, bone, lining of kidney tubule, vascular bundle.
- Q12: Name the regions in which parenchyma tissue is present.
- Q13: What is the role of epidermis in plants?
- Q14: How does the cork act as a protective tissue?
- Q15: Complete the following chart:
CBSE Solutions for Class 9 Science Tissues
Chapters in CBSE - Class 9 Science
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