STAAR Science 8 - Cat 4 Practice

(7.12D) This organelle is a rigid outer layer that protects plant cells.

• Cell Membrane

• Cell Wall

• Nucleus

• Chloroplast

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NGSS.MS-LS1-2

(7.12D) The _?_ holds the DNA and controls the functions of plant and animal cells.

• nucleus

• nuclear membrane

• cytoplasm

• chloroplasts

• endoplasmic reticulum

Tags

NGSS.MS-LS1-2

NGSS.MS-LS3-1

(6.12D) Which kingdom is autotrophic, eukaryotic and reproduces sexually?

• Bacteria

• Fungi

• Plantae

• Protista

• Animalia

What term best describes the non-living things in an ecosystem.

• biotic

• abiotic

• biodiversity

• ecosystem

• community

"Only those organisms best suited to a particular environment are likely to survive." This statement best describes ...

• diapause.

• selective breeding.

• migration.

• natural selection,

• producers

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NGSS.MS-LS4-2

NGSS.MS-LS4-4

(7.10B) In a desert ecosystem, snakes are predators that eat kangaroo rats. What affect would the sudden disappearance of snakes have on the ecosystem?

• The population of kangaroo rats would stay the same because their food source did not increase.

• The population of kangaroo rats would decrease because they would reproduce less.

• The population of kangaroo rats would increase because their predators have disappeared.

• The population of kangaroo rats would stay the same because their water supply is limited.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following would be an example of a parasitic relationship?

• fleas living on dog and ingesting its blood

• lady bugs eating aphids on a plant

• lichen living on a tree for support

• clown fish living in a sea anemone for protection

Tags

NGSS.MS-LS2-4

What is one way humans are trying to positively impact the ocean?

• over fishing

• creating artificial reefs

• havrvesting oil and natrual gas

• transporting goods in ocean vessels

• over fertilizing crops

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NGSS.MS-ESS3-3

NGSS.MS-LS2-5

Because of the increase in rainfall in an ecosystem one year, the mosquito population increases. The next year, the amount of rainfall returns to normal levels. How will these changes in rainfall totals affect the bird population in the ecosystem that feeds on the mosquitoes?

• It will cause the bird population to decrease.

• It will cause the bird population to increase.

• It will have no effect on the bird population.

• It will cause the bird population to increase and then decrease.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

(7.10C) This diagram best illustrates ...

• primary succession.

• secondary succession.

• volcanic disruption.

• plate tectonics.

• crop planting.

Tags

NGSS.MS-LS2-4