What do we call the gravity-responsive organelle within the gravity sensing cells of a plant root cap?
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The concentration RATIO of these TWO hormones can determine…
The concentration RATIO of these TWO hormones can determine whether roots or shoots (or just a callus) will be produced by a plant.
A common way to TEMPORARILY (reversibly) deactivate many pla…
A common way to TEMPORARILY (reversibly) deactivate many plant hormones is __?__ of the hormone with a sugar group.
This hormone induces senescence of leaves and flowers, DIREC…
This hormone induces senescence of leaves and flowers, DIRECTLY.
What is a mechanism that allows heat tolerant species to acc…
What is a mechanism that allows heat tolerant species to acclimate to hot temperatures?
A “short day” plant blooms when exposed to the 24-hour light…
A “short day” plant blooms when exposed to the 24-hour light/dark regime illustrated by the top bar in the diagram below. Select the letter representing any other light/dark regime(s) that would cause this plant to flower.
What is the name of the chemical signal that promotes flower…
What is the name of the chemical signal that promotes flowering?
What plant organ detects photoperiod and sends a chemical si…
What plant organ detects photoperiod and sends a chemical signal to promote flowering?
This hormone causes stomata to close.
This hormone causes stomata to close.
A plant that has been exposed to a chilling period has gone…
A plant that has been exposed to a chilling period has gone through this process.