AIIMS 201826 May
- Exam
- AIIMS
- Year
- 2018
- Date
- 26 May
- Subject
- Botany
- Chapter
- Plant Kingdom
AIIMS 2018 · 26 May · Botany · Plant Kingdom
Assertion : Red algae contribute in producing coral reefs. Reason:...
Assertion : Red algae contribute in producing coral reefs.
Reason: Some red algae secrete and deposit calcium carbonate over their walls.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
A. If both assertion and reason are true and reason is the correct explanation of assertion.
Step-by-step solution
Coral reefs are formed through the accumulation of calcareous exoskeletons of coral animals, calcareous red algae and molluscs. They form the foundation of reefs by secreting a calcium carbonate skeleton that provides protection for the coral polyps.