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Living Systems

Terms in this set (34)

An organism is?
One single living creature, like a frog.
A population is when?
An organism lives with other organisms just like it in a group (multiple frogs).
A community is when?
A population lives with other populations in a community (frogs, birds, insects).
An ecosystem is?
Occurs when all living things in a community live with nonliving things (air, water, rocks, & soil).
A habitat is?
A place that an animal or plant naturally lives and provides it with water, food, shelter, and space.
An organisms niche is?
The specific place in the food web and community that an organisms exists. The function or job that an organism performs.
The energy in a food chain begins with the?
Sun.
A producer is an organism that?
Uses the sun's energy to produce its own food.
A consumer is unable to?
Produce its own food.
A producer, consumer or decomposer must eat other organisms?
Consumer.
A decomposer performs what function?
It is an organism that breaks down and absorbs decaying organisms and help return nutrients to the soil.
A small amount of sun reaches the earth. The majority reflects info the atmosphere in the form of?
Heat.
A herbivore is?
Is a plant consumer.
A carnivore is?
Is a meat consumer.
Decomposers are found at the top or bottom of the food web?
Bottom
Photosynthesis is performed by consumers, producers, or decomposers?
Producers.
A scavenger is an animal which feeds on?
Dead animals to clean up the remains.
Are female reindeer able to grow antlers?
yes
How often do reindeer shed their antlers and regrow them?
Every year.
Reindeer are found in what area?
Arctic.
What physical characteristics help reindeer survive in their habitat?
Thick fur and wide hooves so they don't sink into the snow.
Reindeer have ankles that make a clicking noise when they walk. It is believed this helps them to?
Stay in herds during blizzards.
An animals life cycle includes?
All the stages of growth and development the animal goes through in a lifetime.
Direct development is when?
A person or animal is born looking like their parents, grow in size, but do not change their form.
Metamorphosis occurs when?
An animal (grasshoppers, beetles) look nothing like their parents when born. They change form during life cycles.
Complete metamorphosis occurs when?
Animals (butterflies, beetles, moths) pass through four stages: egg, larva, pupa, and adult.
Incomplete metamorphosis occurs when?
Animals (grasshoppers) pass through three stages: egg, nymph, and adult.
Pollution is?
A harmful waste that can hurt an ecosystem.
Pollution can come from?
Cars, factories, trash, litter.
Ecosystems can be helped or improved by?
Planting trees, picking up trash, keeping our waters clean.
Animals have to ______ in order to survive in their environment?
Adapt.
Structural adaptations are?
Physical attributes that help animals meet a life need (examples are camouflage, turtle shell, kangaroos pouch).
Behavioral adaptations are?
Certain types of activities animals perform, which help them meet a life need (examples are migration & hibernation, hiding in the grass).
A life cycle is?
The various stages of life (egg, tadpole, frog).
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