What Effects Would Occur in a Mutant of Arabidopsis That

question 78

Multiple Choice

What effects would occur in a mutant of Arabidopsis that cannot synthesize GABA within its flowers?

• A) Pollen tube growth would not be directed toward the egg, and fertilization would not occur.
• B) The seeds from the flowers would be unable to break dormancy.
• C) The pollen grain would not form a pollen tube due to incompatibility with the pollen tube.
• D) The length of the style would be increased to the point where the growing pollen tube would be unable to reach the synergids.

---

Definitions:

Permeability

A measure of the ability of a material (such as soil or rock) to transmit fluids, typically referring to the ease with which water, oil, or gas can pass through.

Porosity

The measure of empty spaces in a material, allowing it to hold water or air, critical in evaluating soil health, water filtration, and material properties.

Pore Space

The voids or gaps between soil particles, which can hold air or water, essential for plant growth and the movement of groundwater.

Biogeochemical Cycles

The natural processes that recycle nutrients and elements among the biosphere, atmosphere, lithosphere, and hydrosphere.