D. Connective tissue cells. Loose connective tissue contains a variety of cell types. Those that will be considered in this lecture include: (1) endothelial cells, (2) pericytes, (3) fibroblasts, (4) macrophages, (5) plasma cells, (6) mast cells, and (7) fat cells.
niche noun [ C ] (POSITION) âº a job or position that is very suitable for someone, especially one that they like: He has carved/made a niche for himself as a financial advisor. âº an area or position that is exactly suitable for a small group of the same type: an ecological niche.
A niche refers to the way in which an organism fits into an ecological community or ecosystem. Through the process of natural selection, a niche is the evolutionary result of a speciesâ morphological (morphology refers to an organismâs physical structure), physiological, and behavioral adaptations to its surroundings.istory of the Niche Concept Websterâs Dictionary defines niche as a place or position suitable or appropriate for a... thing.. Biologists and naturalists have long considered each species to have a proper place in nature.