שאלה | 18. The betalain pigments are nitrogen-containing red, yellow or purple pigments:

18. The betalain pigments are nitrogen-containing red, yellow or purple pigments:

		a. Naturally present in most plant families and never together with anthocyanins.
		b. Naturally present in most plant families and never together with carotenoids.
		c. Naturally present in only a few plant families but never together with anthocyanins.
		d. Naturally present in only a few plant families but never together with carotenoids.
		e. Are important pigments, widely distributed throughout all the plant kingdom.