CBSE Questions for Class 9 Biology Tissues Quiz 7 - MCQExams.com

The fibrous tissue connecting two bones is called the ligament. Ligaments are very elastic and have considerable strength.

So, the correct answer is 'Ligament'.

• Meristematic tissues: These tissues have the capacity to divide. They have a thin cellulose wall. They do not have intercellular spaces. They contain dense cytoplasm with a prominent nucleus. They contain many small vacuoles in their cytoplasm. They produce permanent tissues. They are responsible for the primary and secondary growth of the plants. 
• Permanent tissues: These tissues have lost the capacity of division. They have a thick cellulose wall. They have large intercellular spaces. They contain a thin cytoplasm with a normal nucleus. They contain a single large vacuole in their cytoplasm. They are produced by meristematic tissues. These tissues add to the various growths.

• Areolar connective tissue is made of cells and an extracellular matrix. The matrix has two components, fibers, and ground substance. It consists of fibroblast which secretes collagen, macrophages which help in phagocytosis, and mast cells which help in the allergic and inflammatory response. These are absent in adipose, cartilage, and compound epithelium. 

• A tissue is the group of cells of the common origin that are structurally similar or sometimes dissimilar and perform a particular function. 
• Only plant cells are characterized by the distinct cell wall. Animal cells do not have cell wall.

• Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata. 
• Lenticels are one of many raised pores in the stem of a woody plant that allows gas exchange between the atmosphere and the internal tissues.
• Bulliform cells are large, bubble-shaped epidermal cells that occur in groups on the upper surface of the leaves of many grasses. Loss of turgor pressure in these cells causes leaves to "roll-up" during water stress. 
• Subsidiary cell is a plant epidermal cell that is located next to a guard cell in the stoma of a leaf and differs in structure from other epidermal cells; Also called an accessory cell.

• Skeletal muscle cells are multinucleated as individual cells fuse to form larger units with more than one nucleus.
• The skeletal muscles are cylindrical, striated, unbranched, and are under voluntary control.  

• The epidermis is the outermost covering and acts as a protective layer. it is formed initially from the protoderm. 
• These are thin-walled as they are generally made up of parenchymatous cells. 
• The epidermis serves several functions- it protects against mechanical injury  water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients. 
• The epidermal tissue includes several differentiated cell types - guard cells, subsidiary cells, and epidermal hairs (trichomes). They have thin-walled cells. 

The external surfaces and internal linings of the animal body are made up of various kinds of epithelial tissues. Epithelial tissues have various functions all across our bodies like secretion, absorption, protection, sensing and, to some extent, thermoregulation. So, the correct answer is 'Epithelial'.

• Simple squamous epithelium lines the air sacs, or alveoli, of the lungs.
• Simple squamous epithelial cells in the alveoli allow the exchange of gases in the lungs.
• Striated, columnar and cuboidal epithelium is absent in the lines of alveoli. 

• Permanent tissues are composed of cells that have lost the power of division, having attained their definite form, size, and shape. 
• On the basis of constituent cells, permanent tissues can be classified into three categories: simple tissue, complex tissue, special tissues. 
• Simple tissues are homogeneous and composed of only one type of cell. On the basis of the structure of constituent cells, three types of simple tissues are parenchyma, collenchyma, sclerenchyma. 
• While Xylem is the example of complex tissues.
  
   Hence, option A is the correct answer.