Which of the following statements are true
(A) The entire process of involuntary response to a peripheral nervous stimulation is called reflex action.
(B)Information regarding changes in the environment is received by the CNS through the sensory organs which are processed and analysed.
(C) Reflex action occurs without conscious effort
(D) Reflex action requires the involvement of a part of the CNS
(E) Signals from sensory organs goes to spinal cord via ventral root. Choose the correct options from given below:-

Options

A. A, B, C, D, E
B. A, B, C, E
C. B, C, D, E
D. A, B, C, D

Answer

To determine which statements regarding reflex action and the nervous system are true, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A**: "The entire process of involuntary response to a peripheral nervous stimulation is called reflex action."
- **Analysis**: Reflex action is indeed an involuntary response to stimuli, and it primarily involves the peripheral nervous system. This statement is **true**.

2. **Statement B**: "Information regarding changes in the environment is received by the CNS through the sensory organs which are processed and analysed."
- **Analysis**: Sensory organs (like eyes, ears, etc.) detect changes in the environment and send this information to the central nervous system (CNS) for processing. This statement is **true**.

3. **Statement C**: "Reflex action occurs without conscious effort."
- **Analysis**: Reflex actions are automatic responses that do not require conscious thought or effort, as they bypass the brain and are processed at the spinal cord level. This statement is **true**.

4. **Statement D**: "Reflex action requires the involvement of a part of the CNS."
- **Analysis**: Reflex actions do involve the central nervous system, specifically the spinal cord, which plays a crucial role in processing reflexes. This statement is **true**.

5. **Statement E**: "Signals from sensory organs go to spinal cord via ventral root."
- **Analysis**: This statement is incorrect. Signals from sensory organs actually enter the spinal cord via the dorsal root, not the ventral root. Therefore, this statement is **false**.

### Conclusion:
The true statements are A, B, C, and D. The false statement is E.

### Correct Options:
- A: True
- B: True
- C: True
- D: True
- E: False

### Final Answer:
The correct options are A, B, C, and D.

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