When is the polarity of a plant established?
A) when the cotyledons form at the shoot end of the embryo
B) when the shoot-root axis is established in the embryo
C) when the primary root breaks through the seed coat
D) when the shoot first breaks through the soil into the light as the seed germinates

Question

Quizplus · Accepted Answer

The polarity of a plant, meaning the directionality that determines where the shoot and root will develop, is established when the shoot-root axis is established in the embryo. This fundamental organization occurs early in embryogenesis, setting the stage for all subsequent growth and development of the plant.

When Is the Polarity of a Plant Established