Which mutation would most likely damage a plant's ability to respond to light or to gravity?
A) A mutation that reduced activity of the proton pump
B) A mutation that enhanced activity of the proton pump
C) A mutation that disabled movement of ubiquitin
D) A mutation that changed the absorption spectrum for phototropin
E) A mutation that disabled movement of the auxin anion efflux carriers

Question

Quizplus · Accepted Answer

Auxin anion efflux carriers are crucial for the transport of auxin, a hormone that regulates plant responses to light (phototropism) and gravity (gravitropism). Disabling their movement would impair these responses.

Which Mutation Would Most Likely Damage a Plant's Ability to Respond