Apical Meristems of Dicots Are at the Tips of Stems

question 24

Multiple Choice

Apical meristems of dicots are at the tips of stems.Apical meristems of grasses are at ground level or slightly below,concealed by the leaves.The leaves also have an intercalary meristem at their bases.What does this mean when considering care of a lawn or soccer field?

• A)If you mow right at ground level,the leaves can keep growing with no problem.
• B)Grass mowed 2 inches above ground level grows at a slower rate compared to grass mowed 3 inches above the ground level.
• C)If you mow 2 inches above ground level,most apical meristems will be cut down.
• D)If you mow 2 inches above ground level,both the apical and intercalary meristems can keep producing new cells.

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Definitions:

Positron Emission Tomography

An imaging technique that detects positrons emitted by a radioactively labeled substance in the body, used to observe metabolic processes.

Voltage-Gated

Referring to ion channels that open or close in response to changes in electrical membrane potential.

Sodium

Sodium is a chemical element with the symbol Na and atomic number 11, a soft, silvery-white, highly reactive metal.

Potassium

A chemical element with symbol K, vital for plant growth and important in nerve function in animals.