Question

Понаблюдайте за тем, как происходит дыхание моллюсков. Опишите его

Answer 1

Дыхание у моллюсков, живущих в воде, осуществляется жабрами, а у наземных- мешкообразными легкими. В них поступает воздух, а в стенках легких разветвляются кровеносные сосуды. Некоторые водные моллюски осуществляют газообмен через поверхность мантии.

Answer 2

Observing the Breathing of Mollusks

When observing the breathing of mollusks, it's important to note that mollusks have a variety of respiratory structures and mechanisms, depending on the specific type of mollusk. Here's a general description of the breathing mechanisms of different mollusks:

Gills: Many mollusks, such as bivalves (e.g., clams, mussels, oysters) and some gastropods (e.g., snails), have gills for respiration. These gills are feathery structures that are used to extract oxygen from water and expel carbon dioxide. The movement of water over the gills facilitates gas exchange.

Lungs: Some mollusks, particularly terrestrial gastropods like land snails, have evolved lungs for breathing air. These lungs are adapted to extract oxygen from the air and release carbon dioxide.

Mantle Cavity: In cephalopods (e.g., octopuses, squids), respiration occurs through the mantle cavity. Water is drawn into the mantle cavity and then expelled, facilitating gas exchange.

Gill Plume: Some marine gastropods, like sea slugs, have a specialized structure called a "gill plume" for respiration. This structure is used for gas exchange in a manner similar to gills.

It's important to note that the specific respiratory structures and mechanisms can vary widely among different species of mollusks, reflecting their diverse evolutionary adaptations to different environments and modes of life.

Overall, the breathing of mollusks is a fascinating and diverse topic, reflecting the incredible adaptability of these creatures to various aquatic and terrestrial environments.