Coral Reefs: MCQ Test (18 questions)

Question 1 of 18

The Great Barrier Reef located on the east coast of Australia is an example of which of the following coral reefs?

Acoastal coral reef
Bbarrier reef
Ccoastal coral reef
Dnone of these

Question 2 of 18

Which one of the following statements regarding the growth of coral reefs is not correct?

ACorals can grow abundantly in freshwater
BIt is 23⁰Requires warm water between 25°C - 25°C
CThis requires shallow saline water, no deeper than 50 metres.
DIt requires abundant sunlight to aid in photosynthesis.

Question 3 of 18

The coral reef which is formed at some distance from the sea shore is called-

Aring coral reef
Bbarrier reef
Ccoastal coral reef
Dnone of these

Question 4 of 18

For the growth of corals, the average sea salinity should be-

A22% to 27%
B27% to 32%
C32% to 37%
D37% to 42%

Question 5 of 18

What is the length and width of the Great Barrier Reef respectively?

A600 Km and 200 Km
B1000 Km and 300 Km
C1200 Km and 100 Km
D1900 Km and 160 Km

Question 6 of 18

Who propounded the subsidence theory related to the origin of coral reefs?

AGardiner
BDarwin
CMurray
DDaily

Question 7 of 18

Coral reef is-

Aa group formed by organisms
Breefs built by marine organisms
Ca trough near Australia
Da grass found on the east coast of Australia

Question 8 of 18

Which ocean is suitable for the formation of coral reefs?

Atropical ocean
Bcold tropical ocean
Ctemperate tropical ocean
Dnone of these

Question 9 of 18

Where is the world's largest barrier reef system located?

ASouth Australian coast
BWestern Australian coast
CNorth Australian coast
DEast Australian coast

Question 10 of 18

Which temperature is suitable for the growth of coral organisms?

A70 ⁰Fto 80⁰F
B65⁰F to 70⁰F
C50⁰F to 60⁰F
D60⁰F to 80⁰F

Question 11 of 18

Where are coral reefs or fossil belts usually found?

AAbove 18°C in temperate climate zones
BIn the coastal areas between the Tropic of Cancer and the Tropic of Capricorn
Con the eastern and western coasts of continents and islands
Don the cold seashores

Question 12 of 18

The world's largest coral reef is found near the coast of which one of the following countries?

AAustralia
BCuba
CGhana
Dphilippines

Question 13 of 18

What are corals?

Aa forest timber
Ba sea creature
Ca herb
Da terrestrial creature

Question 14 of 18

Which coral reef is shaped like a horseshoe or a ring?

Acoastal coral reef
Bbarrier reef
CAtoll
Dall of which

Question 15 of 18

What is the lagoon that develops between a coastal coral reef and a landmass called?

AAtoll
BKayal
Ccaravans
DBoat Channel

Question 16 of 18

Who propounded the glacial control theory related to the origin of coral reefs?

ADana
BDavis
CDaily
DJolly

Question 17 of 18

Coral reefs are mainly found in-

A30 ⁰ Nbetween 10°S and 30°S latitude
BBetween 20°N to 20°S latitude
CBetween 15⁰ N to 30⁰ N and 15⁰ S to 30⁰ S latitude
DBetween 20⁰N to 35⁰N and 20⁰S to 35⁰S latitude

Question 18 of 18

The most important condition for the deposition of coral is-

ADeep ocean, sedimentary water, low temperature
BShallow sea, sediment-laden water, moderate temperature
CShallow sea, sediment-laden water, high temperature
DDeep ocean, sedimentary water, moderate temperature