the single-celled animals - protozoa - part 27 of 28. illustrates the characteristics and behavior of representatives of each class of protozoans, demonstrates the processes of digestion and reproduction in representative protozoans, and discusses theorie - 液胞 個影片檔及 b 捲影像00:33
the single-celled animals - protozoa - part 21 of 28. illustrates the characteristics and behavior of representatives of each class of protozoans, demonstrates the processes of digestion and reproduction in representative protozoans, and discusses theorie - 液胞 個影片檔及 b 捲影像00:37
the single-celled animals - protozoa - part 20 of 28. illustrates the characteristics and behavior of representatives of each class of protozoans, demonstrates the processes of digestion and reproduction in representative protozoans, and discusses theorie - 液胞 個影片檔及 b 捲影像00:36
the single-celled animals - protozoa - part 19 of 28. illustrates the characteristics and behavior of representatives of each class of protozoans, demonstrates the processes of digestion and reproduction in representative protozoans, and discusses theorie - 液胞 個影片檔及 b 捲影像00:36紅色
living things in a drop of water (1st edition) - part 12 of 20. striking photomicrography pictures single-celled and multi-celled plants and animals. the film helps children discover that these plants and animals have the same life functions as larger liv - 液胞 個影片檔及 b 捲影像00:27
living things in a drop of water (1st edition) - part 11 of 20. striking photomicrography pictures single-celled and multi-celled plants and animals. the film helps children discover that these plants and animals have the same life functions as larger liv - 液胞 個影片檔及 b 捲影像00:34
paramecium bursaria and its symbiotic relationship with the green alga called zoochlorella. - 液胞 個影片檔及 b 捲影像00:24
paramecium bursaria and its symbiotic relationship with the green alga called zoochlorella. - 液胞 個影片檔及 b 捲影像00:24