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Which group of organisms do scientists think is most closely related to the first life on earth?
Yes! That is correct.
Scientists propose that Archaea are the closest living relatives to the first life on Earth.
tubeworms
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shrimp
Sorry, that is incorrect.
Scientists propose that Archaea are the closest living relatives to the first life on Earth.
Archaea
mussels
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Vent Biology Quiz
a smaller surface area at high latitudes
They eat other organisms.
Sorry, that is incorrect.
Microbes break down chemicals present in the hydrothermal fluid, such as hydrogen sulfide.
They absorb sunlight.
Yes! That is correct.
Microbes break down chemicals present in the hydrothermal fluid, such as hydrogen sulfide.
They harvest energy from chemicals in hydrothermal fluid.
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How do microbes living in the vent fluid get energy to
make sugars?
They are scavengers.
They eat shrimp and mussels.
Sorry, that is incorrect.
Symbiotic bacteria living in the clam’s gills manufacture sugars that the clams use.
How do the clams that live near hydrothermal vents get
their food?
Symbiotic bacteria living in the clam’s gills manufacture sugars that
the clams can use.
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They make sugars by photosynthesis.
Yes! That is correct.
Symbiotic bacteria living in the clam’s gills manufacture sugars that the clams use.
They filter food from the water.
zoarcid fish
Sorry, that is incorrect.
Tubeworms ar NOT predators.
crabs
Yes! That is correct.
Tubeworms ar NOT predators.
Which of the organisms living around hydrothermal vents are NOT predators?
octopi
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right
Correct!
They contain pigments that absorb sunlight.
Yes! That is correct.
Tubeworm plumes are filled with blood. The blood carries oxygen and hydrogen sulfide to symbiotic bacteria living in the worm’s cavity.
They attract mates.
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Why are tubeworm plumes red?
They are filled with blood. The blood carries oxygen and hydrogen sulfide to symbiotic bacteria living in the worm’s cavity.
Sorry, that is incorrect.
Tubeworm plumes are filled with blood. The blood carries oxygen and hydrogen sulfide to symbiotic bacteria living in the worm’s cavity.
They scare away predators.
Yes! That is correct.
Each dandelion is a colony of many individual animals that are attached together.
Finish
They cannot move.
Each dandelion is a colony of many individual animals that are
attached together.
They are the annoying weeds that grow on lawns.
They are usually the first animals to colonize a vent.
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Which of the following statements about the dandelions that live around hydrothermal vents is true?
Sorry, that is incorrect.
Each dandelion is a colony of many individual animals that are attached together.