NEET BIOLOGY

Detailed explanation-1: -They are organized from smallest to largest; organism, population, community, ecosystem.

Detailed explanation-2: -The major levels of organization in the body, from the simplest to the most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, and the human organism. See below Figure 1.1.

Detailed explanation-3: -Answer and Explanation: The following sequence correctly lists levels of organization from simple to more complex: d) cell, tissue, organ, organ system. The cell is the basic building block of every living thing. In most multicellular organisms, cells have the ability to specialize.

Detailed explanation-4: -Within the discipline of ecology, researchers work at five broad levels, sometimes discretely and sometimes with overlap: organism, population, community, ecosystem, and biosphere. Let’s take a look at each level.

Detailed explanation-5: -Biosphere. It is the highest level of organization. It is the global ecological system which consists of all the living organisms and other factors which support life.