Consider the following statements:

Branching acropora corals are more sensitive to bleaching events.

Corals use fluorescent pigments to shield themselves from excessive ultraviolet radiation.

When corals bleach, they eject their zooxanthellae multi-celled algae.

Which of the statements given above are correct?

Question

The Great Barrier Reef is suffering its fourth mass bleaching event since 2016.
Coral reefs that suffer widespread bleaching can still recover if conditions improve. Survival depends on each individual coral’s own resilience: its ability to cope with higher temperatures and increased ultraviolet stress.
Fast growing branching corals are the most susceptible to bleaching and are generally the first to die. Long-lived massive corals, such as porites, may be less susceptible to bleaching, show minimal effects of bleaching and recover quicker. Coral species such as branching acropora corals are more sensitive than other.
Corals can use fluorescent pigments to shield themselves from excessive ultraviolet radiation, a bit like sunscreen that lets coral manage, filter and attempt to regulate the incoming light.
When corals bleach, they eject their zooxanthellae single-celled algae that gives coral colour and energy.

GKToday Admin · Accepted Answer

Only 1 & 2

The Great Barrier Reef is suffering its fourth mass bleaching event since 2016.
Coral reefs that suffer widespread bleaching can still recover if conditions improve. Survival depends on each individual coral’s own resilience: its ability to cope with higher temperatures and increased ultraviolet stress.
Fast growing branching corals are the most susceptible to bleaching and are generally the first to die. Long-lived massive corals, such as porites, may be less susceptible to bleaching, show minimal effects of bleaching and recover quicker. Coral species such as branching acropora corals are more sensitive than other.
Corals can use fluorescent pigments to shield themselves from excessive ultraviolet radiation, a bit like sunscreen that lets coral manage, filter and attempt to regulate the incoming light.
When corals bleach, they eject their zooxanthellae single-celled algae that gives coral colour and energy.

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