Question

Сравнить особенности строения ленточных и круглых червей

Answer 1

Ленточные червей развитата нервная система но в то же время у них нету кровеностной и дыхательной системы дышут всем телом.имеется рот и пищеворительнпая система. анального отверстия нету
Леноточные черви
1-половые клетки
2-мезодерма
3- энтодерма
4- эктодерма
5- кишечная полость
6-кольцевые мышцы
7-продольные мышцы
8-выдилительная система
9-нервный тяж
Круглые черви:
тоже самое но только отсутствуют нервный тяж
зато у них есть органы осезания но нету кровеностной и дыхательной системы и плохо развиты но все же есть органы чувств есть нервная система и рот с пищеворением анального отверстия нету
Думаю поблагодориш я столько вспоминал

Answer 2

Comparison of Structure of Flatworms and Roundworms

Flatworms and roundworms are two distinct groups of worms with different characteristics and structures.

Flatworms: - Flatworms, also known as Platyhelminthes, have a flattened body shape. - They are characterized by bilateral symmetry, meaning their left and right sides are mirror images of each other. - Flatworms have a simple nervous system with a ladder-like arrangement of nerves. - They lack a specialized respiratory or circulatory system and rely on diffusion for gas exchange and nutrient transport. - The digestive system of flatworms is incomplete, with a single opening serving as both the mouth and anus. - They have a simple excretory system consisting of flame cells for osmoregulation and waste elimination. - Flatworms can reproduce sexually and asexually, with some species capable of regeneration.

Roundworms: - Roundworms, also known as Nematodes, have a cylindrical body shape. - They exhibit bilateral symmetry and have a complete digestive system with a separate mouth and anus. - Roundworms possess a more complex nervous system compared to flatworms, with a nerve ring and longitudinal nerves. - They have a pseudocoelom, a fluid-filled body cavity that serves various functions including circulation and locomotion. - Roundworms have a specialized excretory system with excretory canals and gland cells for waste removal. - Reproduction in roundworms is primarily sexual, and they exhibit sexual dimorphism in some species.

Comparison: - Both flatworms and roundworms are triploblastic, meaning they have three germ layers during embryonic development. - They are both members of the animal kingdom and play important ecological roles in various ecosystems. - Flatworms and roundworms exhibit different levels of complexity in their body structures and organ systems, reflecting their evolutionary divergence and adaptation to different ecological niches.

These characteristics highlight the distinct structural and physiological differences between flatworms and roundworms, shaping their unique biological functions and ecological roles in the natural world.