Question

Вспомните. Как дышат наземные моллюски. Что общего в дыхании наземных моллюсков и пауков. ___________

Answer 1

Они дышат с помощью трахей и легочных мешков, как и пауки

Answer 2

How do terrestrial mollusks breathe?

Terrestrial mollusks, such as snails and slugs, have a specialized respiratory system that allows them to breathe in air. They do not have gills like aquatic mollusks. Instead, they have a structure called a lung or a pallial cavity that functions as a respiratory organ. This cavity is lined with a thin, moist membrane called the pallial epithelium, which facilitates gas exchange with the surrounding air.

The process of breathing in terrestrial mollusks involves the following steps:

1. Inhalation: Terrestrial mollusks take in air through a small opening called the pneumostome, which is located on the side of their body. The pneumostome can be opened or closed to regulate the flow of air.

2. Air circulation: Once the air enters the pneumostome, it travels through a series of branching tubes called the respiratory tree or lung. These tubes distribute the air throughout the mollusk's body, allowing oxygen to reach the tissues.

3. Gas exchange: The oxygen in the air diffuses across the thin walls of the pallial cavity and into the mollusk's bloodstream. At the same time, carbon dioxide, which is a waste product of cellular respiration, diffuses out of the bloodstream and into the pallial cavity. This exchange of gases occurs through the process of diffusion.

4. Exhalation: After the gas exchange has taken place, the mollusk exhales the carbon dioxide-rich air back out through the pneumostome.

It's important to note that the respiratory system of terrestrial mollusks can vary depending on the species. Some species may have adaptations that allow them to breathe in environments with low oxygen levels or high carbon dioxide levels. Additionally, certain species of land snails can also respire through their skin, in addition to using their lungs.

What is the similarity between the respiration of terrestrial mollusks and spiders?

Both terrestrial mollusks and spiders have evolved adaptations to breathe in air. While their respiratory systems are not identical, there are some similarities between the two.

1. Air-breathing: Both terrestrial mollusks and spiders have mechanisms in place to take in air from the environment. Terrestrial mollusks use a pneumostome to inhale air, while spiders have specialized structures called book lungs or tracheae to facilitate respiration.

2. Gas exchange: Both terrestrial mollusks and spiders rely on diffusion for gas exchange. In both cases, oxygen from the air diffuses into the bloodstream, while carbon dioxide diffuses out of the bloodstream and into the respiratory organs.

3. Moisture requirement: Both terrestrial mollusks and spiders require a moist environment for efficient respiration. The respiratory surfaces in both organisms need to be moist to facilitate the exchange of gases.

While there are similarities in their respiratory adaptations, it's important to note that terrestrial mollusks and spiders belong to different phyla (Mollusca and Arthropoda, respectively) and have distinct anatomical structures and physiological processes associated with respiration.