7.10 A

Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability if an ecosystem?

• The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.

• Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.

• The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.

• All of the above

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Which of the following best describes a relationship in this grassland?

• Badgers are top predators because they eat upland sandpipers and beetles.

• A producer-consumer relationship exists between lupines and ants.

• A predator-prey relationship exists between beetles and ground squirrels.

• Upland sandpipers are primary and secondary consumers because they eat grasses and grasshoppers.

Tags

NGSS.MS-LS2-2

Which sentence best describes how energy flows through this pyramid?

• Energy is transferred down each level of the energy pyramid.

• The energy lost at each level is consumed by organisms in the top level.

• Energy is transferred from organisms in one level to those in the level above.

• The organisms at the bottom level provide energy directly to organisms in all other levels.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A cell that does not have a nucleus is a

• Multicelular

• Prokaryotic

• Eukaryotic

• Unicellular

The Eukarya Domain has which kingdoms?

• Archaea

• Bacteria

• Plantae, Animalia, Fungi and Protista

• none of the above

DNA is stored in the ___________________ of Eukaryotic cells. 

• cell wall

• nucleus

Tags

NGSS.MS-LS1-2

NGSS.MS-LS3-1

Prokaryotic cells ________________ a nucleus. 

• do not have

• have

A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger. The student uses the dichotomous key below to identify it. Which arachnid has the student found?

• Whip Scorpion

• Wind Scorpion

• Daddy long legs

• Scorpion

Tags

NGSS.MS-LS4-2

What is a dichotomous key used for in science?

• To organize biomes

• Classify organisms

• Identify bacteria only

• None of these

In an ecosystem, which type of animal would best be described as a secondary consumer?

• Carnivore

• Herbivore

• Omnivore

• Decomposer

• Producer

Tags

NGSS.MS-LS2-3