Question

5. Составная часть планктона a. Речные раки b. Дафнии циклопы c. Крабы d. Мокрицы

Answer 1

ответ b, т.к. по определению планктон - это разнородные, в основном мелкие организмы, свободно дрейфующие в толще воды и неспособные — в отличие от нектона — сопротивляться течению. А из представленных вариантов дафния самая мелкая.

Answer 2

Составная часть планктона

a. Речные раки Rivers and streams are home to a variety of aquatic organisms, including freshwater shrimp or crayfish, which are an important part of the planktonic community. These organisms contribute to the biodiversity and ecological balance of freshwater ecosystems.

b. Дафнии Daphnia, commonly known as water fleas, are small planktonic crustaceans that are an essential part of the freshwater food web. They serve as a vital food source for many aquatic organisms and play a significant role in nutrient cycling within aquatic ecosystems.

c. Циклопы Cyclops, a genus of freshwater copepods, are another integral component of the planktonic community. These small crustaceans are important in the diet of various aquatic organisms and contribute to the overall biodiversity and ecological functioning of freshwater ecosystems.

d. Крабы Crabs are not typically considered a part of the planktonic community. While they may have larval stages that are planktonic, adult crabs are generally not classified as planktonic organisms. Instead, they are part of the benthic community, living on or near the bottom of aquatic environments.

e. Мокрицы The term "мокрицы" does not correspond to a specific biological entity in the context of plankton. It is possible that this term refers to a specific organism or concept not commonly associated with plankton. If there is a specific organism or concept you are referring to with "мокрицы," please provide additional context or clarification for further assistance.

It's important to note that the composition of plankton can vary based on the specific ecosystem and environmental conditions. The organisms mentioned above represent some of the diverse components of planktonic communities in freshwater environments.