The net movement of uncharged, polar molecules across a semipermeable membrane from a low concentration to a high concentration occurs by diffusion
(a) true
(b) false

the offspring would all be white. if the parents are both white flowers then they have the genotype rr, which when crossed results in an all white punnet square.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

the correct answer is d