Define the following:
a. ground substance
b. collagen fiber
c. elastic fiber
d. reticular fiber

Ground substance:

Ground substance may be defined as the component of extracellular matrix that made up of proteoglycans. The main function of ground substance is to resist the compressive forces.

Collagen fiber:

Collagen fiber may be defined as a type of protein fiber that provides strength to the organism. Collagen fibers are present within the matrix of the cell.

Elastic fiber:

Elastic fiber are presnt in bundles in the extracellular matrix. The amorphous elastin is present in the elastic fiber. This fiber provide elasticity to the cells.

Reticular fiber:

Reticular fiber composed of the type III collagen. The reticular fiber acts as the supportive mesh of the liver and bone marrow. Reticular fiber was discovered by  M. Siegfried.

answer:

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Explanation: