Which of these best describes a stable population size?

number of births equals the number of deaths

Which of these best describe how you can tell whether a trait is dominant or recessive?

Compare the traits of the P1 and F1 generations

Which similarity does a dog and a cat share?

They both have an evolutionary history

What difference exists between a flowering plant and a mushroom?

Only one of them uses light to make food

A plant species has evolved to contain a bad tasting chemical. Which is the most likely outcome of this adaptation?

Animals are less likely to eat the plant

Which statement best describes how limiting factors affect the organisms in an ecosystem

They keep a population from getting too large

Which of these best describes genetics?

field of biology that investigates transmission from parent to offspring

What is the best description of the process of sustainable development?

using resources without destroying or depleting while providing for humans

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7th grade PSSA review

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Questions 18

Answers

1
Which of these best describes a stable population size?
more births than deaths
more deaths than births
number of births equals the number of deaths
no births at all
2
An example of a biotic factor is
drinking water
fungi
temperature
oxygen
3
Which of these best describe how you can tell whether a trait is dominant or recessive?
Compare the traits of the P1 and F1 generations
Count the number of organisms in the cross
Determine the age of the organisms in the cross
Examine only the traits of the F1 generation produced in the cross
4
Which similarity does a dog and a cat share?
They both have an evolutionary history
They are members of the same species
They are both unicellular organisms
They both reproduce asexually
5
Which of the following is not an example of sustainable development?
replanting forests with a variety of trees
conserving water
plowing land to prevent erosion
desertification
6
Which of these is an example of a freshwater biome?
deciduous forest
ocean
tundra
marsh
7
What difference exists between a flowering plant and a mushroom?
Only one of them is made of cells
Only one of them can reproduce
Only one of them can evolve
Only one of them uses light to make food
8
A plant species has evolved to contain a bad tasting chemical. Which is the most likely outcome of this adaptation?
The chemical is used in photosynthesis
Animals are more likely to eat the plant
The plant will be able to live in many different environaments
Animals are less likely to eat the plant
9
Which term represents the max number of individuals an ecosystem can support?
succession
carrying capacity
climax community
population density
10
Which of the following is a nonrenewable resource?
game animals
natural gas
a wheat crop
marsh reeds
11
Which is an abiotic factor in a bird's ecosystem?
leaves it eats
tree in which it lives
water it drinks
organism that eats it
12
An example of a renewable resource is
coal
water
minerals
natural gas
13
Which term describes a characteristic that is overridden by a prevailing characteristic?
dominant trait
recessive trait
genetic cross
Mendel trait
14
Which statement best describes how limiting factors affect the organisms in an ecosystem
They keep a population from getting too large
They have no effect on the organisms in an ecosystem
They destroy resources organisms need to survive
They provide what an organism needs to survive
15
Which of these best describes genetics?
the growing of pea plants
companing dominant and recessive traits
the transmission of qualities from parents to offspring
field of biology that investigates transmission from parent to offspring
16
What is the best description of the process of sustainable development?
using resources to satisfy humans while ignoring needs of other organisms
using resources without destroying or depleting while providing for humans
using renewable resources at a rate faster than they can be stored
using nonrenewable resources without care for their consumption
17
Which event will most likely cause secondary succession to occur?
volcano erupting
seasons changing
predator moving in
fire
18
Which biome includes grasses,flowering plants, bison, mice and prairie dogs?
grassland
desert
tundra
tropical forest

7th grade PSSA review Flashcards | StudBud