Lec6

Question 1

is an invertebrate that can be no bigger than a pinhead to up to a foot in diameter.

Answer 1

Coral polyp

Question 2

polyp uses calcium carbonate (CaCO3) called (limestone) from seawater to build

Answer 2

coral reefs (calcium carbonate skeletons) which sometimes are called the stony or “true” corals.

Question 3

polyp uses calcium carbonate (CaCO3) called

Answer 3

(limestone)

Question 4

Corals can produce very slowly their skeletons without

Answer 4

Zooxanthellae

Question 5

look much like little sea anemones

Answer 5

Coral Reefs

Question 6

lie in a cup-like skeleton of CaCo3 growing upward and outward building up the skeleton beneath them.

Answer 6

Coral polyps