Question

Several tissues combine to form
A. Organ
B. Organism
C. Cell
D. Cytoplasm

Answer 1

Cells are the fundamental unit of life. They are the building blocks of the human body. Tissues are the structural unit of the body and are generally made up of similar cells.

Complete answer:
Structurally similar group of the cell which works together and performs any specific function in the body is known as tissue. An organ is the assemblage of some tissues that form a structural unit and performs a definite function. In a body, the tissues form the organizational level in between the cells and a fully-formed organ. Typically, a tissue is a group of similar cells surrounded by the extracellular matrix and has the same origin and they perform a definite function together. Then organs are formed by the grouping of functionally similar and multiple tissues together in a body. An organ can also be defined as an independent group of multiple tissues which carry out any particular function in the body. Some examples of organs in the human body are the heart, liver, and lungs etc.
So, the correct answer is option (A).

Additional information:
Histology is the study of human and animal tissues. The conventional tools used for the study of tissues are paraffin block. A tissue is embedded in a paraffin block and then it is sectioned and stained using a histological stain, and then viewed using the optical microscope.

Note: Animal tissues can be divided into four types: connective tissue, muscle tissue, nervous tissue and epithelial tissue. Tissues are collectively joined to form units which serve a shared function and form organs. Despite the fact that all animals are normally composed of these four types of tissues, the appearance of these tissues usually differs from each other with respect to the kind of organism.