Physical Geography - Lithosphere - MCQs with answers - Part IV
1. The reef separated from a mainland by a deep lagoon is known asa. Apron reef
b. Atoll reef
c. Bank reef
d. Barrier reef
View Answer / Hide AnswerANSWER: d. Barrier reef
Atoll reef is a continuous barrier reef extending around a lagoon without any central island. Apron reef is a short reef that extends out and downward from a peninsular shore.
a. Table reef
b. Fringing reef
c. Bank reef
d. Barrier reef
View Answer / Hide AnswerANSWER: c. Bank reef
A fringing reef is attached to a shore, borders it with any intervening channel. Table reef is generally an isolated reef and it doesn’t have a lagoon.
i. Patch reefs are smaller than bank reefs.
ii. Ribbon reefs are more broader and short.
a. i only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: a. i only
A patch reef is smaller than the bank reefs. A ribbon reef is associated generally with a atoll lagoon and is long and narrow. Patch reefs are also within a lagoon and isolated reefs.
i. Coral reefs require less mean annual temperature.
ii. Corals live in deeper waters.
a. i only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: d. none
The structures that are produced by living organisms, coral reefs are found in the shallow waters. The survival of the corals require high mean annual temperature.
i. The Great Barrier Reef is the World’s largest coral system.
ii. The Red Sea coral Reef is the deepest photosynthetic coral reef.
a. i only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: a. i only
The Great Barrier Reef is located in Queensland of Australia and the Red Sea Coral Reef in the coast of Egypt and Saudi Arabia. The 2nd largest Coral reef system, the Belize Barrier Reef is in Central America.
a. The Great Barrier Reef
b. The Belize Barrier Reef
c. Pulley Ridge
d. Red Sea Coral Reef
View Answer / Hide AnswerANSWER: c. Pulley Ridge
Pulley Ridge is located in Florida, United States of America. It is the deepest photosynthetic coral reef system in the world.
a. pathogen infections
b. change in salinity level
c. increased sedimentation
d. all the above
View Answer / Hide AnswerANSWER: d. all the above
Coral bleaching leads to loss of colour of the corals due to stress caused by various factors like global warming, increase in the solar irradiance, increased sedimentation etc.
a. Zone of permanent saturation
b. Zone of temporal saturation
c. Zone of non-saturation
d. Zone of intermittent saturation
View Answer / Hide AnswerANSWER: d. Zone of intermittent saturation
Ground water is the one that enters the underlying rocks by passing through the soil. There are three water zones below the surface viz, the zone of permanent saturation, intermittent saturation and non-saturation.
a. Zone of permanent saturation
b. Zone of temporal saturation
c. Zone of non-saturation
d. Zone of intermittent saturation
View Answer / Hide AnswerANSWER: a. Zone of permanent saturation
There are three water zones under the surface. The zone where the pore spaces contain some water , but will never get saturated is called the zone of non-saturation.
i. One day is gained as we cross from western hemisphere to eastern hemisphere.
ii. One day is lost as we cross from eastern to western hemisphere.
a. i only
b. ii only
c. both
d. none
View Answer / Hide AnswerANSWER: d. none
The opposite line of Greenwich Meridian is the International Date Line. One day is gained as we cross from eastern hemisphere to western hemisphere and one day is lost as we cross from western hemisphere to eastern hemisphere.
