Of the Steps Below, Which Would Be Fourth in the Sequence

question 56

Multiple Choice

Of the steps below, which would be fourth in the sequence for the formation of a root nodule?

• A) Bacteroids are formed.
• B) The root produces flavonoids that attract Rhizobium bacteria to the vicinity of the root.
• C) Flavonoids trigger transcription of the bacterial nod genes.
• D) The plant produces leghemoglobin.
• E) Nod factors secreted by the bacteria cause cell division leading to the formation of primary nodule meristem.

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Definitions:

Quadriceps Tendon

A tendon that connects the quadriceps muscle to the patella (kneecap) allowing for knee extension.

Blinking

A rapid, involuntary action involving the immediate opening and closing of the eyelids to lubricate and protect the eye.

Meter Stick

A measuring stick one meter long, used for measuring lengths or distances.

Peripheral Nervous System

The portion of the nervous system that consists of nerves and ganglia outside of the brain and spinal cord.