The polarity of a plant is established when?

Question

A) the shoot-root axis is established in the embryo

B) the zygote divides

C) cotyledons form at the shoot end of the embryo

D) the primary root breaks through the seed coat

E) the shoot first breask through the soil into the light as the seed germinates

Answer 1

B) the zygote divides is correct:

Example:

"In zygotes of the brown alga Fucus, F-actin is localized at the site of polar growth and accumulates at the cell plates of the first two divisions of the embryo"

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