Which of the following is a secondary compound of embryophytes?

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Secondary compounds are organic compounds that are not directly involved in the primary metabolic processes of embryophytes but have important ecological functions, such as deterrence of herbivores or attraction of pollinators. Alkaloids, such as caffeine or nicotine, are common secondary compounds in plants. Adenosine triphosphate and GDP are primary compounds involved in energy metabolism, whereas chlorophyll a and b are primary pigments involved in photosynthesis.

Which of the Following Is a Secondary Compound of Embryophytes