Unique Marine Ecosystems

What is the depth range of the hadalpelagic zone?

• 200m - 1000m

• 1000m - 4000m

• 6000m - 11,000m

• 4000m - 6000m

Which trench is known as the deepest trench on Earth?

• Atlantic Trench

• Mariana Trench

• Java Trench

• Puerto Rico Trench

Compared to the Abyssopelagic zone, what is notable about the hadalpelagic zone?

• It has less biomass and diversity of marine life.

• It has an increase in biomass and diversity of marine life.

• It is shallower than the Abyssopelagic zone.

• It is warmer than the Abyssopelagic zone.

What are hydrothermal vents?

• Underwater volcanoes that erupt occasionally

• Volcanic cracks in the seafloor releasing geothermally heated water and gases

• Openings in the ocean floor that emit cold water

• Geysers found on land that shoot out hot water and steam

Tags

NGSS.MS-ESS2-1

Which organisms are mentioned as being part of the large food webs at hydrothermal vents?

• Common fish and sea anemones

• Rare crustaceans and giant tube worms

• Dolphins and whales

• Sea turtles and coral reefs

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is the role of chemosynthetic bacteria at hydrothermal vents?

• They decompose dead organisms

• They consume organic compounds from the water

• They make up primary producers by creating organic compounds from an inorganic source

• They serve as a food source for phytoplankton

Tags

NGSS.MS-LS2-3

What is NOT a source of energy for primary producers at hydrothermal vents?

• Hydrogen sulfide gas

• Geothermally heated water

• Sunlight

• Organic compounds from the ocean

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the primary chemical process that organisms around hydrothermal vents rely on for energy?

• Photosynthesis

• Chemosynthesis

• Cellular respiration

• Fermentation

What is the main difference between photosynthesis and chemosynthesis as shown in the diagram?

• Photosynthesis uses carbon dioxide, while chemosynthesis uses methane.

• Photosynthesis produces oxygen, while chemosynthesis produces sulphuric acid.

• Photosynthesis occurs in plants, while chemosynthesis occurs in animals.

• Photosynthesis requires sunlight, while chemosynthesis relies on chemical energy.

Tags

NGSS.MS-LS1-6

What are corals classified as?

• Plants

• Protists

• Invertebrates

• Fungi