Why Have Some Plants Evolved Mutualistic Relationships with Nitrogen-Fixing Bacteria

question 34

Multiple Choice

Why have some plants evolved mutualistic relationships with nitrogen-fixing bacteria?

• A)The bacteria transform nitrogen into forms useful forms for the plants; the plants provide water and a place for the bacteria to live.
• B)The bacteria protect the plant from harmful effects of nitrogen compounds such as ammonia; the plants provide carbohydrates for the bacteria.
• C)The bacteria utilize nitrogen to produce energy for the plants; the plants provide the source of the nitrogen for the bacteria.
• D)The bacteria provide natural immunities to the plants; the plants shelter the bacteria from predators.

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Definitions:

Trigeminal

Pertaining to the trigeminal nerve, which is the fifth cranial nerve responsible for sensory data from the face and motor functions such as biting and chewing.

Glossopharyngeal

Pertaining to the ninth cranial nerve, which carries sensory information from the back of the throat and taste from the posterior third of the tongue.

Hypoglossal

Relating to the twelfth cranial nerve, which is primarily responsible for controlling the muscles of the tongue.

Facial

Pertaining to the face, including structures, muscles, or expressions associated with the human face.