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
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 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
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 4 of 18
Which coral reef is shaped like a horseshoe or a ring?
- Acoastal coral reef
- Bbarrier reef
- CAtoll
- Dall of which
Question 5 of 18
What are corals?
- Aa forest timber
- Ba sea creature
- Ca herb
- Da terrestrial creature
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
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 9 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 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 is the world's largest barrier reef system located?
- ASouth Australian coast
- BWestern Australian coast
- CNorth Australian coast
- DEast Australian coast
Question 12 of 18
What is the lagoon that develops between a coastal coral reef and a landmass called?
- AAtoll
- BKayal
- Ccaravans
- DBoat Channel
Question 13 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 14 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 15 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 16 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 17 of 18
Who propounded the glacial control theory related to the origin of coral reefs?
- ADana
- BDavis
- CDaily
- DJolly
Question 18 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%