Which of the following statements best describes the status of neurons in a living worm?

• A. Worm neurons are only alive during the worm's embryonic development.
• B. Worm neurons are living cells that function as part of the nervous system.
• C. Worm neurons are non-living structures that transmit signals.
• D. Worm neurons are dead cells that provide structural support.

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the role of neurons in living organisms. Neurons are specialized cells that transmit electrical and chemical signals in the nervous system, enabling communication between different parts of the body.
2. Step 2: Clarify the concept of 'living cells.' Living cells are characterized by their ability to perform essential functions such as metabolism, growth, response to stimuli, and reproduction (in some cases). Neurons meet these criteria as they actively transmit signals and maintain cellular processes.
3. Step 3: Evaluate the options provided in the problem. Eliminate choices that contradict the biological definition of neurons as living cells. For example, the options stating that neurons are 'non-living structures' or 'dead cells' are incorrect because neurons are alive and functional in a living organism.
4. Step 4: Consider the developmental aspect of neurons. While neurons are formed during embryonic development, they remain alive and functional throughout the organism's life, unless damaged or degraded due to disease or injury.
5. Step 5: Select the correct answer based on the biological understanding of neurons. The correct statement is: 'Worm neurons are living cells that function as part of the nervous system.' This aligns with the scientific definition and role of neurons in the nervous system.