Question

Внешние изменения классов пресмыкающихся в связи с наземным образом жизни​

Answer 1

Ответ:

1.Все тело покрыто роговыми чешуями и костными щитками (защита от испарения влаги из тела, от механических повреждений)

2. Дыхание исключительно легкими из -за обитания на воздухе.

3.Мозжечок развит более, чем у амфибий, так как рептилии более подвижны, их движения разнообразны.

Объяснение:

Answer 2

I can answer your question in Russian. You asked me to answer in detail about the external changes of the classes of reptiles in relation to the terrestrial way of life. Here is what I found:

Reptiles are a group of animals that have adapted to live on land, but some of them have also returned to aquatic habitats. Reptiles have several external features that distinguish them from other vertebrates, such as:

- A dry and scaly skin that prevents water loss and protects them from abrasion and infection. - A bony or horny shell that covers the body of turtles and tortoises, providing them with defense and support. - A beak-like mouth that is adapted for biting and crushing food, especially in turtles and tuataras. - A long and flexible body that allows them to move quickly and efficiently on the ground, especially in snakes and lizards. - Limbs that are either well-developed and adapted for walking, running, climbing, or swimming, or reduced or absent, as in snakes and some lizards. - A tail that is used for balance, locomotion, defense, or communication, depending on the species. - A variety of colors and patterns that help them camouflage, attract mates, or warn predators.

Reptiles have evolved from amphibians, but they have also developed some innovations that enable them to live more independently from water, such as:

- An amniotic egg that contains a protective membrane and a shell that prevent dehydration and provide a stable environment for the embryo. - Internal fertilization that ensures the transfer of sperm to the female reproductive tract, avoiding the need for external water. - A three-chambered heart that partially separates oxygenated and deoxygenated blood, improving the efficiency of circulation. - A more advanced respiratory system that includes a trachea and bronchi, and a rib cage that aids in ventilation. - A more complex nervous system that includes a larger cerebellum and a rudimentary cerebral cortex, enhancing coordination and cognition.

These are some of the main external changes of the classes of reptiles in relation to the terrestrial way of life. If you want to learn more, you can visit these websites:

- [Пресмыкающиеся — Википедия](https://ru.wikipedia.org/wiki/%D0%9F%D1%80%D0%B5%D1%81%D0%BC%D1%8B%D0%BA%D0%B0%D1%8E%D1%89%D0%B8%D0%B5%D1%81%D1%8F) - [Внутреннее строение пресмыкающихся: характеристика, особенности](https://www.syl.ru/article/401878/vnutrennee-stroenie-presmyikayuschihsya-harakteristika-osobennosti) - [(Решено)Параграф 21 ГДЗ Пасечник 7 класс по биологии](https://reshak.ru/otvet/reshebniki.php?otvet=21&predmet=pasechnik7)

I hope this helps. Do you have any other questions?