I think the correct answer from the choices listed above is option A. In plants, the purpose of auxins is to produce phytochrome. The main function of auxin is to help plants grow. Auxin stimulates plant cells to elongate, and the apical meristem of a plant. Hope this answers the question.
First one - pivot join
Second one - Suture joint
Third one - Gliding joint
Fourth one - Hinge joint
Hope this helps!
-Payshence xoxo
The weak bonds are called hydrogen bonds and they are used to connect the hydrogen atom to oxygen atom in order to share electrons.
They are all part of the Carbon cycle