Question

In case of some animal cells, cells come together to form tissues with the help of

which all the body functions are performed. Such animals show ___grade oganisation​

Answer 1

Answer:

An animal (or a plant for that matter) is composed of many units organized into successive units: Molecules are the units of organelles, Organelles are the units that make up cells, Cells are the units that make up tissues, Tissues are the units that make up organs, and Organs make up organ systems

Each level is more complex than the one before and, as a general rule, a more recent evolutionary product.

A. Protoplasmic grade of organization.

All life functions are confined within the boundaries of a single cell. Within the cell, the protoplasm is differentiated into organelles capable of carrying out specialized functions. (e.g., the protists)