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WorksheetsBiodiversity, Natural Selection, and Dichotomous Keys
Total questions: 26
Worksheet time: 37mins
The more diverse an ecosystem is the more...
... vulnerable it is to climate change.
... endangered it is to habitat fragmentation.
.... resistant it is to environment changes.
The purpose of selective breeding is to
Get bigger animals
Get smarter animals
create animals with traits desirable to humans
create animals that will never go extinct
A change in the environment will cause the animals that live there to...
Die
Migrate
Adapt
All of the above
Adaptation occurs...
in one individual organism after several years in a new environment
in one individual organism after a lifetime in an environment
right away in every member of a species after a year in a new environment
only in the species' next generation
The Prickly Pear Cactus can grow in a dry environment because.....
it is able to store water
it has spiny leaves
is carnivorous
collects salt
What is the source of most oil pollution found in the ocean?
Runoff from land
Leakage from wells located offshore
Oil tanker collisions
From wastewater dumped by ships
What feature do most sea animals have to help them withstand the cold temperatures of the ocean?
blubber (a specialized fat layer to keep animals warm)
the ability to hibernate so that the temperatures do not affect them as much
cold blood to match the temperature of the water they are in
the ability to swim fast enough to warm themselves up in cold water
Why might some plants that grow on the shady rain forest floor have large leaves?
to stay safe from predators
to attract different animals
to survive harsh winters with heavy snowfall
to take in as much sunlight as possible
