NCERT Important Questions Class 9 Science biology Chapter 6
Important NCERT Extra Questions
Chapter 6 Tissues
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
Identify the type of tissue in the following: skin, bark of tree, bone, lining of kidney tubule, vascular bundle.
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1. Skin: The skin is composed of different layers. The outer layer, the epidermis, consists mainly of epithelial tissue, providing protection. Below that, the dermis contains connective tissue with collagen and elastin fibers, blood vessels, nerves, and other structures for support and sensation.
2. Bark of Tree: The bark is made up of several layers. The outermost layer, called cork or periderm, is formed by cork cells from the cork cambium. Beneath the cork, the phloem tissue transports nutrients throughout the tree.
3. Bone: Bone tissue is primarily osseous tissue, a specialized form of connective tissue. It contains osteocytes (bone cells) embedded in a matrix of collagen and calcium phosphate, providing strength and support to the body.
4. Lining of Kidney Tubule: The lining of kidney tubules is primarily made of epithelial tissue. These cells assist in filtering and processing blood, reabsorbing useful substances, and removing waste to form urine.
5. Vascular Bundle: Vascular bundles found in plant stems and leaves consist of xylem and phloem tissues. Xylem transports water and minerals upward, while phloem carries sugars and other nutrients throughout the plant. These bundles also contain supportive tissues for structural integrity.
In essence, these structures encompass various tissues such as epithelial, connective, osseous, and specialized tissues like cork cells, phloem, and xylem, each tailored for specific functions crucial for the proper functioning and support of the respective organs or plant parts.
Skin: Epithelial tissue (squamous epithelium);
Bark of tree: Cork (protective tissue);
Bone: Skeletal tissue (connective tissue);
Lining of kidney tubules: Cuboidal epithelial tissue;
Vascular bundle: Complex permanent tissue-xylem and phloem’