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 are true regarding reflex actions and the nervous system, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Statement A**: "The entire process of involuntary response to a peripheral nervous stimulation is called reflex action."
- **Analysis**: Reflex actions are indeed involuntary responses that occur without the involvement of the brain, primarily involving the spinal cord. 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 the eyes, ears, skin, etc.) detect changes in the environment and send this information to the Central Nervous System (CNS) for processing and analysis. This statement is also **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 occur without the brain's involvement. Thus, this statement is **true**.

4. **Statement D**: "Reflex action requires the involvement of a part of the CNS."
- **Analysis**: Reflex actions do involve a part of the CNS, specifically the spinal cord, but not the brain. Therefore, 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 travel to 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 correct options are A, B, C, and D.

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

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