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WorksheetsNC EOG Science 5th Grade
Total questions: 58
Worksheet time: 40mins
An ecosystem is made of both biotic and abiotic things. Which describes the biotic part of the ecosystem?
plants that grow in soil
the animals that breathe oxygen
all living things in the environment
plants and animals that live in water
If you stand in the middle of an open field, you are standing among individual organisms, different species, populations, and communities. What makes up one of the populations in the field?
all organisms of the same species
the different communities in the ecosystem
the communities that occupy the same niche
all organisms that live in a certain part of the field
The rainforests in South America support many ecosystems. These ecosystems are healthy. How does the diversity in the rainforests help determine the health of ecosystems?
When diversity is high, there are more resources available.
Resources in the environment last longer when the diversity is low.
Less diverse ecosystems have less competition among the residents.
Areas with high diversity have increased competition among the residents.
Temperature, water, soil, and air are abiotic factors in an environment. They are not the same everywhere. What role do abiotic factors such as these play in an ecosystem?
They control the changes of the seasons.
They prevent competition among populations.
They determine which plants and animals can live there.
They help control the effect humans might have on the ecosystem.
When scientists talk about an ecosystem and the type and number of animals and plants that live in one, they are also concerned about limiting factors. What are limiting factors?
the rate at which the plants and animals in an ecosystem reach maturity
the ratio of animals that lay eggs and those that give birth to live young
the things that are necessary to support a population of organisms in an area
the difference between trees that lose their leaves in an ecosystem and those that don't
A human and an oak tree both have structures that function to help them live. Skin is one of those structures for humans. A human’s skin is most like which part of an oak tree?
acorn
bark
leaf
root
The human skeletal system helps us live and survive by providing structure and support for the body. The picture below shows the basic structures of a plant. Which plant structure is most similar in function to the human skeletal system?
A
B
C
D
