Hydra has nervous system which is represented by -a)Polarised nerve cellsb)Nervesc)Ganglionated nerve cordd)Non polarised nerve cellsCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Simplest type nervous system found in hydra that has non polarised nerve cells..

Answer

Simplest type nervous system found in hydra that has non polarised nerve cells.

Answer

Non polarised and tubular nerve are present in Hydra.

Answer

**Nervous System in Hydra**

The nervous system in Hydra is relatively simple compared to more complex organisms. Hydra is a multicellular organism belonging to the phylum Cnidaria, which also includes jellyfish and sea anemones. It possesses a nerve net, which is a decentralized network of neurons that allows for basic sensory perception and response.

**Non-polarized Nerve Cells**

The correct answer to the given question is option D, non-polarized nerve cells. Hydra possesses non-polarized nerve cells, also known as nerve cells without polarity. These nerve cells are not specialized into distinct structures such as axons and dendrites, which are commonly seen in more complex nervous systems.

**Explanation**

1. **Polarized Nerve Cells**: Polarized nerve cells, also known as neurons, have a distinct polarity with specialized structures. They have axons that transmit signals away from the cell body and dendrites that receive signals from other neurons or sensory cells. Polarized nerve cells are found in more advanced organisms, such as humans.

2. **Nerves**: Nerves are bundles of specialized axons that transmit electrical signals between different parts of the body. They form a complex network, allowing for rapid communication and coordination.

3. **Ganglionated Nerve Cord**: A ganglionated nerve cord is a structure commonly found in segmented worms, such as earthworms. It consists of a series of ganglia (clusters of nerve cell bodies) connected by interconnecting nerves. This nerve cord helps in coordinating the movements and responses of different segments of the worm's body.

4. **Non-polarized Nerve Cells**: Hydra, being a simpler organism, lacks complex structures like polarized nerve cells, nerves, and ganglionated nerve cords. Instead, it possesses a nerve net, which is a decentralized network of non-polarized nerve cells. These nerve cells are distributed throughout the body of Hydra and are interconnected, allowing for basic sensory perception and simple responses.

**Conclusion**

In conclusion, the correct representation of the nervous system in Hydra is non-polarized nerve cells. Hydra lacks complex structures like polarized nerve cells, nerves, and ganglionated nerve cords. Instead, it possesses a decentralized nerve net, which allows for basic sensory perception and simple responses.

Answer

Option D is correct answer

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