| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 4.00 |
| Score | 0% | 80% |
A large naturally occurring community of flora and fauna occupying a major habitat is:
a biome |
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a food chain |
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a population |
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a community |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
arthropod |
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vertebrate |
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sentient |
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spiny |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.
The gravitational interaction of Earth and the Moon is responsible for which of these?
tides |
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seasons |
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day and night cycle |
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the northern lights |
Tides are caused by the gravitational interaction of Earth and the Moon.
Menstruation occurs when:
the ovum becomes fertilized |
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the fetus is formed |
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the ovum fails to become fertilized |
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the zygote is formed |
If the ovum fails to become fertilized, the lining of the uterus sloughs off during menstruation. From puberty to menopause, this cycle of menstruation repeats monthly (except during pregnancy).
Which of these is not a component of blood?
white blood cells |
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red blood cells |
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plasma |
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marrow |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.