NEET BIOLOGY

Detailed explanation-1: -Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.

Detailed explanation-2: -Just as cells join together to form tissues, different tissues join together to form organs. An organ is a structure made up of two or more tissues that work together to carry out a specific job. Ex: Your heart, is an organ made up of muscle tissue, blood tissue, and nerve tissue.

Detailed explanation-3: -Groups of Tissues Form Organs An organ is a structure made of two or more tissues that work together. The heart (Figure below) is made up of the four types of tissues. The four different tissue types work together in the heart as they do in the other organs.

Detailed explanation-4: -Therefore, molecules combine to form cells, cells combine to form tissues, tissues combine to form organs, organs combine to form organ systems, and organ systems combine to form organisms.