What Is the Primary Benefit to Phototrophic Microorganisms Associated with Corals

question 47

Multiple Choice

What is the primary benefit to phototrophic microorganisms associated with corals?

• A) Calcium and carbonate ions are released, which help buffer the pH and prevent dramatic pH shifts.
• B) The coral skeleton is used as a source of bicarbonate for the autotrophic growth of the phototrophs.
• C) The coral skeleton is an extremely efficient light-gathering structure that greatly enhances light harvesting for photosynthesis.
• D) The water temperature in and around the coral skeleton is much warmer than elsewhere.

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Definitions:

Exhaustion

Describes a state of extreme physical or mental fatigue, often resulting from prolonged stress or activity without adequate rest and recovery.

General Adaptation Syndrome

A three-stage physiological response to stress that consists of alarm, resistance, and exhaustion phases, as proposed by Hans Selye.

Poisonous Snake

Describes a snake capable of delivering venom through a bite, which can be harmful or lethal to humans and other animals.

Alarm Reaction

The initial response of the body to a perceived threat, part of the stress response, involving physiological changes such as increased heart rate and adrenaline release.