Question

Внешнее строение лягушки и ящерицы

Answer 1

Лягушка - кожа гладкая, богата железами, кожное - легочное дыхание, икринки не имеют специальных оболочек, 1 шейный позвонок - атлант (поворот головы вперед назад), живут рядом с водоемами
Ящерица - удаление отходов в виде нерастворимых веществ ( из-за удежания воды в организме), появление неполной перегородки в желудочке сердца, яйца в твердой оболочке, развитие не связано с водой.

Answer 2

External Structure of Frogs and Lizards

The external structure of frogs and lizards differs in several ways. Let's explore the key differences:

Frogs: - Frogs have a streamlined body shape, which is adapted for swimming and jumping in water and on land. - They have moist, smooth skin that is covered in mucus to keep it moist and allow for gas exchange. - Frogs have long hind limbs, which are specialized for jumping. - They have webbed feet, which aid in swimming. - Frogs have a short, broad head with large eyes positioned on the sides of the head. - They have a wide mouth with a long, sticky tongue used for catching prey. - Frogs lack external ears but have a middle ear that is adapted for hearing both in air and water. - They have a cloaca, which is a common opening for excretion and reproduction.

Lizards: - Lizards have a more elongated body shape, which is adapted for crawling and climbing. - They have dry, scaly skin that provides protection and helps prevent water loss. - Lizards have four limbs, with each limb ending in claws or digits for gripping surfaces. - They have toes that are not webbed, allowing for better grip on surfaces. - Lizards have a longer, narrower head compared to frogs, with eyes positioned more towards the top of the head. - They have a mouth with sharp teeth for capturing and chewing prey. - Lizards have external ears, which are visible as small openings on the sides of the head. - They have a cloaca, similar to frogs, for excretion and reproduction.

These are some of the main differences in the external structure of frogs and lizards. It's important to note that there is a wide variety of frog and lizard species, and individual species may have additional adaptations and variations in their external structure.