Question

the need for the control and co ordination in multicellular animals​

Answer 1

Explanation:

The two tissues that provide control and coordination in multi-cellular animals are nervous tissue and endocrine tissue. Explanation: ... These tissues secrete hormones which control many functions in our body. Some times they even control emotions of the organisms.

Answer 2

Explanation:

Multicellular organisms such as humans have complex organs and organ systems. Furthermore, most multicellular organisms are composed of at least a few billion cells. Hence, it is important to have control and coordination among the cells. 

In humans, processes pertaining to control and coordination are undertaken by the nervous system and the endocrine system. In plants, the same role is exhibited through various plant hormones such as auxins, gibberellins, and cytokinins.

In unicellular organisms, complex systems of control and coordination were thought to be non-existent. However, recent findings have confirmed that unicellular organisms such as bacteria do indeed interact with other bacteria through a cell-to-cell signalling process called quorum sensing.