Praxis II: Biology Content Knowledge Exam Prep

Answer: D, The false statement about plant hormones is that plant hormones are produced by glands. Unlike animals, plants do not possess glands.

Key Takeaway: Plant hormones are chemical substances that regulate the growth of plants. As plants do not possess glands to produce and store hormones or a circulatory system to transport them, hormones in plants are typically simple chemicals that can move through the plant by passive means. These hormones exist at extremely low concentrations, and thus have been difficult to study. Hormones affect the plant’s growth at every level, including gene expression, transcription, and cellular development.