Moderate

Which of the following is not a function of auxins?

Correct answer: A. Promote stomatal opening

  • A. Promote stomatal opening
  • B. Promote apical dominance and fruit growth
  • C. Promote cell division in cambium
  • D. Cause delay in leaf senescence

Explanation

Auxins are not directly involved in promoting stomatal opening. Stomatal opening and closing are primarily regulated by factors such as light intensity, carbon dioxide concentration, and the plant hormone abscisic acid (ABA).

Last updated

About Coordination and Control

Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.

Practise Coordination and Control

1,687 free Coordination and Control MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Biology questions like this

Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions