It would be A. True. I hope this helped you. Have a good afternoon
<span>Stamen produces pollen so the best answer is stamen.
I hope it helped :)</span>
Histamines are chemicals released by the body as an allergic response.They help the body by reacting when their are "intruders" so when enters, histamine acts as a messenger and sends out a signal for the body to create a reaction helping to get rid of teh intruder through some type of reaction.
The answer is when levels of the amino acid are high, it binds to the repressor, ending the synthesis of this amino acid