Whether the act of the vegetal soul is commanded?

Objections

Objection 1 : It would seem that the acts of the vegetal soul are subject to the command of reason. For the sensitive powers are of higher rank than the vegetal powers. But the powers of the sensitive soul are subject to the command of reason. Much more, therefore, are the powers of the vegetal soul.
Objection 2 : Further, man is called a "little world" [*Aristotle, Phys. viii. 2], because the soul is in the body, as God is in the world. But God is in the world in such a way, that everything in the world obeys His command. Therefore all that is in man, even the powers of the vegetal soul, obey the command of reason.
Objection 3 : Further, praise and blame are awarded only to such acts as are subject to the command of reason. But in the acts of the nutritive and generative power, there is room for praise and blame, virtue and vice: as in the case of gluttony and lust, and their contrary virtues. Therefore the acts of these powers are subject to the command of reason.