Coral Reefs: MCQ Test
18 questions · pick one option for each · submit when you finish to see your score and the correct answers.
Question 1 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 2 of 18
Which ocean is suitable for the formation of coral reefs?
- Atropical ocean
- Bcold tropical ocean
- Ctemperate tropical ocean
- Dnone of these
Question 3 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 4 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 5 of 18
Who propounded the glacial control theory related to the origin of coral reefs?
- ADana
- BDavis
- CDaily
- DJolly
Question 6 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
Question 7 of 18
Who propounded the subsidence theory related to the origin of coral reefs?
- AGardiner
- BDarwin
- CMurray
- DDaily
Question 8 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 9 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 10 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 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
Which coral reef is shaped like a horseshoe or a ring?
- Acoastal coral reef
- Bbarrier reef
- CAtoll
- Dall of which
Question 13 of 18
What is the lagoon that develops between a coastal coral reef and a landmass called?
- AAtoll
- BKayal
- Ccaravans
- DBoat Channel
Question 14 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 15 of 18
What are corals?
- Aa forest timber
- Ba sea creature
- Ca herb
- Da terrestrial creature
Question 16 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 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 world's largest coral reef is found near the coast of which one of the following countries?
- AAustralia
- BCuba
- CGhana
- Dphilippines