Question

Compare and contrast nervous and hormonal mechanism for control and coordination in animals.

Answer 1

Ans:


Nervous control


Hormonal Control

1

It is consist of nerve impulses between PNS, CNS and Brain.

1

It consists of endocrine system which secretes hormones directly into blood.

2

Here response time is very short.

2

Here response time is very long.

3

Nerve impulses are not specific in their action.

3

Each hormone has specific actions.

4

The flow of information is rapid.

4

The flow of information is very slow.

Answer 2

Nervous mechanism:-

1. It is performed by nervous system which sent an electrical impulse along axons and as a chemical across synapse and acts through effectors.

2. The information is transmitted instantaneously.

3. the effects are short lived.

Hormonal mechanism:-

1. It is performed by chemical sub. called hormones , secreted by endocrine glands.

2. the information is transmitted slowly not as fast as nervous mechanism.

3. the effects are generally more prolonged.