Coral Reefs Answers

Legislation has been ineffective at preserving coral reefs.

Which of the following statements about coral reef preservation efforts is true?a.In order to preserve coral reefs, all aquarium trade in coral reef organisms must end.b.Legislation has had no impact on coral reef preservation efforts.c.Various preservation methods have had some positive impact on coral reef preservation.d.Education of fishermen has eliminated all coral reef loss.

What is a direct cause of coral bleaching?a.exposure to sunlightb.the loss of symbiotic algaec.overgrazing by fishd.all of the above

Reef producing coral are called _______.a.mobileb.hermatypicc.limestone polypsd.all of the above

What is the purpose of the tentacles of coral polyps?a.defenseb.food capturec.clearingd.all of the above

Coral bleaching that occurs because of the introduction of foreign substances is _______.a.solar irradianceb.dilutionc.xenobioticsd.harvesting

Coral bleaching occurs when a colony of polyps are under stress.

What is the main concern with coral harvesting methods?a.Coral harvesting methods are not economically profitable.b.The coral cannot regenerate quickly enough to recover from harvesting practices.c.Organisms that rely on coral are harmed by the methods, even though the coral is not.d.The coral is harmed by the methods, even though the organisms that rely on it are not.

Which of the following can lead to coral bleaching?a.long-term temperature variationsb.increased solar radiationc.freshwater dilutiond.all of the above