Tissues (Class - IX)

Blood is a fluid connective tissue in which matrix is a fluid (liquid) comprising of plasma which contains proteins, salts and hormones.

Parenchyma is a type of simple permanent tissue having unspecialised cells with thin cell walls. It is living, loosely packed and provides support to plants. It also stores food, nutrients and water. 

Chlorenchyma contains chlorophyll and performs photosynthesis. It can be seen in the mesophyll of leaves.

Heart muscle is a cardiac muscle. It is voluntary in structure, but involuntary in function. Thus, heart muscle is immune to fatigue.

Suberin is a complex polymer present in the wall or cork cells. It makes cell wall impervious to gases and water. Thus, this is the correct answer.

This is the correct answer as smooth muscles are involuntary muscles. 

Cartilage has widely spaced cells and is composed of proteins and sugars. 

In hydrophytes, large air cavities are present in parenchyma to give buoyancy to the plants. Such type of parenchyma is called arenchyma. 

Cuboidal epithelium is present in the lining of kidney tubules.

Lignin is the correct answer as lignin is a complex polymer which acts as cement and hardens the cell wall. It is present in the walls of cells of sclerenchyma tissue. Such cell walls are called lignified.

Sieve tube is not an element of xylem. It is an element of phloem. Sieve tube is a tubular cell with perforated walls.

Sclerenchyma tissue is responsible for making a plant hard and stiff. 

Sometimes, a portion of the epithelial tissue folds inwards and a multicellular gland is formed. This is known as glandular epithelium.

Respiratory tract is the correct answer. The columnar epithelium tissue in the respiratory tract has hair-like projections called cilia. They help in pushing the mucus forward to clean it.

This is the correct answer.
Voluntary muscles are called skeletal muscles because they are mostly attached to bones and help in body movement.
Voluntary muscles are also called striated muscles because these muscles show alternate light and dark bands or striations, when strained appropriately.