Question

blood, which contains different types of cells like red blood cells, white blood cells, and platelets suspended in an extracellular matrix called plasma, is pumped by the heart to different parts of the body. blood unites each body system together for the overall normal functioning of the organism. in what category is blood classified? options: organ, organism, tissue, organ system

Explanation:

Tissues are groups of cells with similar structure and function, and blood is a connective tissue (a type of tissue) composed of cells (red blood cells, white blood cells, platelets) suspended in plasma. An organ is a structure made of multiple tissues, an organism is a whole living entity, and an organ system is a group of organs working together. So blood is classified as tissue.

Answer:

tissue (assuming the option with "tissue" is the correct one; if the options were labeled, e.g., if "tissue" was option B, then B. tissue)