Question

Justify the need of reflex action in higher group of organisms and lower group of organisms

Answer 1

$\textbf{Answer is in Attachment !}$

Answer 2

Answer:

The need of reflex action in higher group of organisms and lower group of organisms is to protect them.  

Explanation:  

The reflex actions that are displayed by animals may not involve the brain in the case of simple or unconditional reflex and may involve the brain actions in the case of complex or conditional reflex but in either case they are required to protect the organisms or to perform some of their highly required basic needs.