What Is the Correct Sequence of Steps During Infection of Plants

question 19

Multiple Choice

What is the correct sequence of steps during infection of plants by nitrogen-fixing bacteria?

• A) Rhizobia release Nod factors; roots release flavonoids; rhizobia proliferate inside of root hair; infection thread grows into the root cortex; nodule forms.
• B) Rhizobia release flavonoids; roots release Nod factors; rhizobia proliferate inside of root hair; infection thread grows into the root cortex; nodule forms.
• C) Roots release flavonoids; rhizobia release Nod factors; rhizobia proliferate inside of root hair; nodule forms; infection thread grows into the root cortex.
• D) Roots release flavonoids; rhizobia release Nod factors; rhizobia proliferate inside of root hair; infection thread grows into the root cortex; nodule forms.
• E) Nodule forms; infection thread grows into the root cortex; rhizobia proliferate inside of root hair; rhizobia release flavonoids and Nod factors.

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Definitions:

Prefrontal Cortex

The anterior part of the frontal lobes of the brain, involved in complex cognitive behavior, decision making, and moderating social behaviour.

Brodmann's Areas

Regions of the cerebral cortex defined by their cytoarchitectonic characteristics and associated with different brain functions.

Reticular Activating System

a network of neurons in the brainstem involved in regulating wakefulness and sleep-wake transitions.

Lucid Dreaming

A state of dreaming where the dreamer is aware that they are dreaming and sometimes able to control the dream narrative.