biology

1.stimuli refer to the changes ithe external environment only. [False]
→也有體內的變化。
2.A sense organ always contains one type of receptor. [False]
→常有多種受器，如耳內有音波，動平衡、靜平衡受器等。

2012-10-09 16:52:55 補充：
3.A person will have the sensation of a stimulus once the receptor for the stimulus has been stimulates. [False]
→不太懂英文，應該是指感覺會疲勞。
4.Auxins move within the plant body by diffusion. [False]
→植物生長素是用主動運輸，不是擴散。

2012-10-15 13:06:14 補充：
1.stimuli refer to the changes ithe external environment only. [False]
→刺激除了可造成對外在環境的變化，也當然有體內的變化。
2.A sense organ always contains one type of receptor. [False]
→一個感覺器官內常有多種受器，如耳內有音波，動平衡、靜平衡受器等。
3.A person will have the sensation of a stimulus once the receptor for the stimulus has been stimulates. [False]
→不太懂英文，應該是指感覺會疲勞。
4.Auxins move within the plant body by diffusion. [False]
→植物生長素是用主動運輸，不是擴散。

如有疑議請補充!我可以針對您的問題再解說。
(請儘量用中文說明，我的英文程度不大好)