Answer:

Extratropical storms and tropical cyclones are two different types of weather systems that occur in different regions and have distinct characteristics. Let's analyze each statement individually:

Statement 1: Tropical storms bring rain, while extratropical storms do not.

This statement is incorrect. Both tropical storms and extratropical storms can bring rain. However, the amount and intensity of the rainfall may vary depending on various factors such as the size, strength, and location of the storm.

- Tropical storms, also known as tropical cyclones or hurricanes, are intense low-pressure systems that form over warm ocean waters near the equator. These storms are characterized by strong winds, heavy rainfall, and thunderstorms. The warm, moist air fuels the storm's energy, resulting in heavy precipitation.

- Extratropical storms, on the other hand, are low-pressure systems that develop outside the tropics, typically in the mid-latitudes. These storms often form along weather fronts and are associated with changes in temperature and air masses. While extratropical storms may not always bring as much rainfall as tropical storms, they can still produce significant precipitation, especially in regions where warm and cold air masses collide.

Statement 2: Extratropical storms are caused due to jet streams, whereas tropical cyclones are caused due to lower atmospheric circulations.

This statement is correct. The formation and development of extratropical storms and tropical cyclones are influenced by different atmospheric circulations.

- Extratropical storms are primarily driven by the jet stream, a high-speed, meandering current of air in the upper atmosphere. The jet stream acts as a boundary between cold polar air and warm tropical air, creating a favorable environment for the formation of extratropical storms. The temperature and moisture gradients associated with the jet stream contribute to the development and intensification of these storms.

- Tropical cyclones, on the other hand, are fueled by lower atmospheric circulations and the release of latent heat from warm ocean waters. These storms typically form in regions of the tropics where sea surface temperatures are above 26.5°C (80°F). As the warm, moist air rises, it creates a low-pressure system that draws in more air and moisture, leading to the formation of a tropical cyclone.

In conclusion, both statements are not correct. Tropical storms and extratropical storms can bring rain, and their formation is influenced by different atmospheric circulations. Therefore, the correct answer is option 'D' - None of the above.