CBSE Questions for Class 9 Biology Tissues Quiz 4 - MCQExams.com

• Blood is a type of connective tissue in which red blood cells, white blood cells and platelets are suspended in a fluid matrix containing proteins, salts and hormones. 
• The ligament is a fibrous connective tissue, which connects bone to another bone.
• Cartilage is a type of connective tissue having widely spaced cells, which are interspersed in the matrix made of proteins and sugars. 
• Tendon is a tough, fibrous connective tissue, which connects muscle to bone. Tendons have great strength. 

• Tracheids are thick walled xylem cells that are involved in the transport of water.
• Sieve tubes and Companion cells are phloem cells.
• Sclereids are a type of dead sclerenchyma cells.

Phloem tissue helps to conduct the food made in the leaves to all other parts of the plant. It consists of sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.

The endodermis is the main and innermost layer of the cortex in land plants.

The epidermis is the single layer of cells, found on the outer layers in different parts of a plant,

The xylem is the vascular tissue, which is composed of primarily two types of non-living cells: Xylem consists of tracheids, vessels, and xylem parenchyma and xylem fibres. The cells have thick walls, but many of them are dead cells.

So the correct option is C.

Parenchyma, collenchyma, and sclerenchyma are called simple tissues. They are made up of similar kinds of cells. Vascular tissues are complex tissues as they are heterogeneous in nature with different types of cells. The main elements are the xylem, phloem and pericycle.

Thus, the correct option is B.

• The ligament is the fibrous tissue that connects bones to other bones. 
• Tendon is a tough band of fibrous connective tissue that connects muscle to bone. 
• Areolar tissue is the connective tissue with fibres arranged in a mesh or net and acts as a filling tissue. 
• Adipose tissue or body fat or simply fat is a loose connective tissue composed of adipocytes or fat cells, which stores fats. 

• A tendon is a tough band of fibrous connective tissue that usually connects muscle to bone and is capable of withstanding tension. 
• Ligaments join one bone to another bone.
• Cartilage is a flexible connective tissue in animals, including the joints between bones, the rib cage, the ear, the nose, the bronchial tubes and the intervertebral discs. 
• It is not as hard and rigid as bone, but it is stiffer and less flexible than muscle.

1. Cheek cells are loosely packed and secrete mucus. Hence, option A is incorrect. 
2. Parenchyma cells are loosely packed cells with large intercellular spaces. Hence, option C is incorrect. 
3. Onion peel cells possess a cell wall, large vacuole, and nucleus located at the periphery. Hence, option D is incorrect. 
4. Squamous epithelium cells are tightly packed, flat, polygonal cells. Animal cells possess a centrally located nucleus. Therefore, option B is correct.  

Blood vessels are lined by single-layered simple squamous epithelium tissue called the endothelium. The endothelium is the thin layer of cells that line the interior surface of blood vessels. It helps in the exchange of materials like gases and nutrients between the blood and the body tissues.

Thus, the correct option is B.

• Epiblema is a distinct epidermal cell located in rootlets of plants. 
• It is the outer part of most of the root hairs in the cells. 
• Muscle fibre, nerve fibre and skin are present in animals.
• Since epiblema is the only one that is present in plants, it is the odd one out.

• Based on the number of layers, epithelia are mainly of three types, simple, stratified, and pseudostratified.
  
• Based on the cell shape, epithelia are of three types, squamous, cuboidal and columnar.
  
• Various combinations of the above mentioned six types of epithelia are found in various locations of the body, each serving some unique function.
  
• Cells of squamous epithelium having wavy outlines comprise what is called the tessellated epithelium. For example, the epithelium lining the blood vessels.