Based on the 7th-grade biology curriculum by , Laboratory Work No. 8 typically focuses on studying representatives of the class Amphibia (Amphibians) .
Their limb structure and placement allow for movement on land, while webbed feet and a streamlined body make them efficient swimmers.
Лабораторные работы по биологии 7 класс - Инфоурок
Abeka 7th Grade Science, Section 8.4 Bold Terms Flashcards - Quizlet
Note the thin, moist skin and the presence of mucus, which is essential for cutaneous (skin) respiration.
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:
Observe the streamlined shape and how the head transitions into the trunk without a distinct neck.