Gotovaia Laboratornaia Rabota 8 Po Biologii 7 Klass Latiushin Shapkin 10 Izdanie -

Лабораторные работы по биологии 7 класс - Инфоурок

To examine the structural features of amphibians and identify adaptations to their dual environment (aquatic and terrestrial). Equipment: Live or preserved specimens (e.g., frogs or newts). Wet preparations or models. Magnifying glass. Core Observation Tasks: Magnifying glass

Amphibians exhibit "mixed" characteristics: they possess lungs for air-breathing but still rely heavily on moist skin for gas exchange. Based on the 7th-grade biology curriculum by ,

Examine the front and hind limbs, looking for specialized features like webbed feet for swimming and powerful muscles for jumping. Magnifying glass

Based on the 7th-grade biology curriculum by , Laboratory Work No. 8 typically focuses on studying representatives of the class Amphibia (Amphibians) .

Note the thin, moist skin and the presence of mucus, which is essential for cutaneous (skin) respiration.