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nguyenvannhathuy010901
2 năm trước
Bài 36: Thực hành: QUAN SÁT CẤU TẠO TRONG CỦA ẾCH ĐỒNG TRÊN BÀN MỔ - Quan sát hình 36.2, cho biết lớp da của ếch đồng có đặc điểm gì? Đặc điểm đó có ý nghĩa gì đối với đời sống của ếch đồng. - Nghiên cứu thông tin ở bảng trang 118 sách giáo khoa, cho biết: + Ếch đồng hô hấp nhờ những cơ quan nào? + Ếch đồng có mấy vòng tuần hoàn? Tim có mấy ngăn? Máu đi nuôi cơ thể thuộc loại máu nào? + Em hiểu như thế nào được gọi là “máu pha”?
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