Polyps in the sunlight zone have to use their tentacles to catch tiny creatures called plankton in the water.
False
True
Scientists predict that _____.
we will lose another 10% of corals in 2050.
only 10% of coral will exist in 2030.
we will have only 10% of corals existing in 2050.
Polyps that live in cold, dark zones have to work harder _____.
because they can’t see clearly.
because algae here move fast.
because there is no algae here.
Polyps have _________ bodies without bones.
hard and transparent
rough and transparent
soft and transparent
A coral reef looks like a colorful underwater garden, but corals are not plants.
True
False
Scientists use reef creatures to make new foods and drinks.
True
False
Polyps in the dark zone get food from tiny plants called algae.
False
True
Some coral reefs are millions of years old.
True
False
It's predicted that only ten per cent of the world's coral will exist in the year 2050.
False
True
Colonies are ______.
huge groups of polyps
huge groups of coral living together
corals living for many years
Algae are _____.
fish
polyps
tiny plants and food for polyps