Question

Строение, размножение, питание, вообщем все про червей. Биология, 7 класс 15 баллов!!!!​

Answer 1

Ответ:

размножение они откладывают яйца или в почве

питание это смотря какие если дождевые черьви то питательные вещества в земле можно сказать они едят землю

строение Я не знаю

Answer 2

Structure of Worms

Worms are a diverse group of organisms that belong to the phylum Annelida. They can be found in various habitats, including marine, freshwater, and terrestrial environments. The body structure of worms can vary depending on the species, but there are some common characteristics.

External Structure: Worms typically have a long, cylindrical body with a distinct head and tail end. They lack limbs and have a soft, flexible body. The body is divided into segments called metameres or segments, which are separated by internal partitions called septa. Each segment contains a pair of setae, which are bristle-like structures that help with movement.

Internal Structure: Internally, worms have a well-developed digestive system that includes a mouth, pharynx, esophagus, crop, gizzard, and intestine. The digestive system allows worms to ingest and break down organic matter for nutrition. They also have a circulatory system that consists of blood vessels and a pumping organ called the aortic arches. The circulatory system helps transport nutrients, oxygen, and waste products throughout the body.

Reproduction of Worms

Worms reproduce through both sexual and asexual means, depending on the species.

Sexual Reproduction: In sexual reproduction, worms have separate male and female individuals. They produce eggs and sperm, which are released into the environment. Fertilization occurs externally, and the fertilized eggs develop into larvae, which eventually grow into adult worms.

Asexual Reproduction: Some worms are also capable of asexual reproduction, where new individuals are produced from a single parent without the involvement of gametes. This can occur through processes such as fragmentation (where a piece of the worm's body can regenerate into a new individual) or budding (where a small bud grows on the parent worm and eventually detaches to become a new individual).

Nutrition of Worms

Worms have a diverse range of feeding strategies depending on their habitat and species. Here are some common feeding methods:

Herbivorous Worms: Some worms feed on plant material, such as leaves, algae, or decaying plant matter. They have specialized mouthparts for scraping or grinding plant material.

Carnivorous Worms: Other worms are carnivorous and feed on small invertebrates or even other worms. They may have sharp jaws or proboscises to capture and consume their prey.

Detritivorous Worms: Many worms are detritivores, which means they feed on decaying organic matter. They play a crucial role in breaking down dead plant and animal material, contributing to nutrient cycling in ecosystems.

Filter-Feeding Worms: Some worms are filter feeders, meaning they extract food particles from the water by filtering it through specialized structures, such as cilia or tentacles.

Conclusion

Worms are fascinating organisms with diverse structures, reproductive strategies, and feeding habits. They play important roles in ecosystems by contributing to nutrient cycling and serving as a food source for other organisms. If you have any specific questions about a particular type of worm or need more information, feel free to ask!