Use the image to answer the question.
An illustration titled Coral Anatomy shows three coral polyps affixed to a base labeled D. The long, thin arms extending from each coral are labeled C. A blow up of the tissue of a long, thin arm identifies a row of cells containing small darts labeled A. Another row of algae cells is labeled B.
Which is the part of the coral that is built up over thousands of years into a reef?
(1 point)
Responses
B
B
D
D
C
C
A
D - The base of the coral (labeled D) is the part that is built up over thousands of years into a reef.
Evolution of New Life Quick Check
2 of 32 of 3 Items
Question
Which of the following triggered large-scale growth of coral reefs millions of years ago?(1 point)
Responses
the relationship between corals and zooxanthellae
the relationship between corals and zooxanthellae
the extinction of some species of algae
the extinction of some species of algae
the effect of tsunamis on marine life
the effect of tsunamis on marine life
the evolution of new species of fishes
the relationship between corals and zooxanthellae
Evolution of New Life Quick Check
3 of 33 of 3 Items
Question
Which statement about biodiversity in coral reefs is accurate?(1 point)
Responses
Species that evolved in coral reef habitats always stay in those habitats.
Species that evolved in coral reef habitats always stay in those habitats.
Most organisms that live in coral reef habitats are zooxanthellae.
Most organisms that live in coral reef habitats are zooxanthellae.
Coral reefs have much biodiversity, but most species that live there migrated from other habitats.
Coral reefs have much biodiversity, but most species that live there migrated from other habitats.
More new species have evolved in coral reef habitats than in most other types of habitats.
More new species have evolved in coral reef habitats than in most other types of habitats.