WorksheetsEcosystems - ELEMOL 339
Total questions: 20
Worksheet time: 10mins
All the organisms that live in an area together with the nonliving factors of the environment is known as
food chain
population
ecosystem
community
A consumer that eats only plants are
herbivores
omnivores
producers
carnivores
A food chain is
all of the organisms of the same species that live in the same place at the same time.
all the populations that live in an area along with physical factors in the environment.
when more than one individual or population tries to make use of the same limited resource.
traces the path of energy as it moves from one organism to the next in an ecosystem.
Plants, algae, and some bacteria take in carbon dioxide from the environment and us it to make food through the process of ______________________. Oxygen is released back to the environment as a waster product of this process.
respiration
photosynthesis
decomposition
nitrogen fixation
Most organisms get energy by combining oxygen from the air with food in a process known as ______________________.
cellular respiration
photosynthesis
biosphere
decomposition
Organisms that feed on the remains or wastes of other organisms are known as
herbivores.
omnivores.
decomposers.
carnivores.
The third feeder in a food chain is the
carnivore.
tertiary consumer.
producer.
niche.
The energy pyramid shows
a system of several overlapping food chains.
the constant movement of nitrogen between living thing and the environment.
the part of Earth that supports life.
the decrease in available energy at each level of a food chain.
The ____________ is a cold, dry mostly treeless land biome that encircles the Arctic Ocean. Temperatures are well below freezing here.
savanna
tundra
taiga
coniferous forest
The part of the Earth that supports life is called the
biome
kingdom
biosphere
domain
Autotrophs are
organisms that can make their own food.
single-celled organisms that do not have membrane-bound internal structures.
self-feeders.
any organism that uses another as its source of food.
Singe-celled organisms that do not have membrane-bound internal structures are called
organelles.
prokaryotes.
eukaryotes.
heterotrophs.
Eukaryotes are
cells that have organelles.
organisms that use another as its source of food.
single or many-celled organisms that reproduce by spores.
single-celled organisms that do not have membrane-bound internal structures.
________________ are animals with distinct body sections, jointed legs, and a hard body covering that forms an outer skeleton.
Invertebrates
Phloems
Vertebrates
Arthropods
Animals that do not have a backbone are classified as
arthropods.
invertebrates.
vertebrates.
phloem.
In a vascular plant, ____________ tissue forms the structures that carry water throughout the plant.
phloem
herbaceous
xylem
cartilage
A taxonomic tree is
show connections among family members and to trace the relationships back a few generations.
helps you identify organisms by presenting you with a series of choices.
common branches show groups of organisms that re closely related in their evolutionary history.
used to show the evolutionary relationships among different groups of organisms.
A special key, call a ________________________ key, helps you identify organisms by presenting you with a series of choices.
dichotomous
taxonemic
family
hierarchy
A _________________ is a group of organisms that can mate and produce offspring that in turn can produce more offspring.
population
community
species
ecosystem
_____________ is a close relationship between two species.
Symbiosis
Competition
Predation
Niche
