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Worksheets7th grade final review
Total questions: 180
Worksheet time: 4hrs 7mins
Sexual VS Asexual
Which of the following animals has a body temperature that doesn't change depending on the weather outside?
Where does photosynthesis takes place?
The flower
The leaf
The stem
The root
What is the vascular tissue that transports water up the plant?
Xylem
Phloem
Roots
Shoot
What is NOT a function of the root system?
Anchor the plant to the ground
Absorb water and nutrients
Store energy for example in potatoes or carrots
Create food for the plant through photosynthesis
What vascular tissue carries organic nutrients "sugar" throughout the plant?
Xylem
Phloem
Cones
Leafs
What is a function of the root system?
Absorb Water
Absorb sun light
Reproduce
Take in carbon dioxide
Roots store energy in bulbs, taproots and root vegetables.
True
False
What are the levels of organization in plants?
Plants have cells, but not tissues.
Plants are made up of cells, tissues, organs, and organ systems
Plants contain cells and tissues, but not organs.
What is the vascular tissue that carries water throughout a plant?
phloem
seedling
xylem
______________, pores on leaves through which plants lose water and exchange carbon dioxide and oxygen.
stomata
seed
stem
The body of a plant is made up of organs called roots, ________, and leaves.
vacuole
stems
cones
What does the reproductive system for a plant consist of?
flower and fruit
xylem and phloem
chloroplast and chlorophyll
What is the function of the plant organelle called the vacuole?
The vacuole stores water, nutrients, and waste.
The vacuole produces proteins.
The vacuole stores DNA.
Plants have two organ systems, the _________________ system and the root system.
vascular
seedless
shoot
non-vascular
___________________________ is growth that happens in organisms in response to light, such as a stem bending toward a light source.
transpiration
gravitropism
phototropism
Which action describes a response to internal stimuli?
catching a ball at a baseball game
drinking when you are thirsty
running at the sight of a wild lion
A houseplant is placed on a window sill that gets direct, bright sunlight every afternoon. The plant starts to grow toward the window. What kind of response is described by this situation?
Gravitropism
A negative response to a stimulus
Gravitropism
Phototropism
Which homeostasis mechanism is the plant version of an animal drinking when it gets thirsty?
A plant's growth response toward light
A plant's growth response to gravitation
A plant wilting when the soil dries out
A plant making sugar through photosynthesis
Stimulus refers to _____.
food that gives your body energy
a thing or event that causes a reaction
outside reactions that monitor your bodily systems
___________________________ is the loss of water through the pores on plant leaves.
respiration
stomata
transpiration
_________________ is something that causes a response from an organism.
geotropism
emergence
stimulus
water
An example of a positive tropism to gravity is the ________________.
shoot system growing down
root system growing down
shoot system growing up
When the plant cells contain a lot of water, the water exerts force on their cell walls. This force is called _____________________>
force pressure
transpiration
turgor pressure
out side pressure
Germination occurs when the plant embryo uses stored food and begins to grow again. The force of the growing embryo causes it to push out of the seed. This is known as ___________________.
emergence of a seedling
tropism
photoperiodism
dormancy
The genotype for a yellow plant is...
Why is some energy not passed on to the next trophic level?
The organisms at each level use about 90% of the available energy to live.
The statement is NOT true. All energy IS passed from one trophic level to the next.
The organisms at each level use about 10% of the available energy to live.
Most energy is absorbed by the soil instead.
All the living things and non-living things in an environment.
ecosystem
food chain
food web
energy pyramid
Biotic things in an environment are
living things
non-living things
Abiotic things in an environment are
Living things
Non-living things
What are the three energy roles in an environment? click all the correct answers.
producer
consumer
decomposer
predator
Which one of the following is an example of an herbivore?
lion
racoon
mouse
rabbit
Which one of the following is an example of a carnivore?
lion
racoon
mouse
rabbit
Which one of the following is an example of an omnivore?
lion
racoon
tiger
rabbit
What does a scavenger do in an ecosystem?
eat plants
eat flesh
eat both plant and flesh
consume already dead organisms
What does a food chain end with?
plants
producer
decomposer
top-level consumer
What is a model that shows how food chains are interconnected?
food chain
energy pyramid
food web
decomposer
What is the herbivore in the following marine ecosystem?
Algae - Krill - fish - seal - polar bear
krill
algae
fish
polar bear
What is the producer in the following food chain?
grass - rabbits - snake - fox
rabbits
snake
fox
grass
What is a model that shows the amount of energy available in each step of a food chain?
food chain
food web
energy pyramid
What is another term for a step in an energy pyramid?
talent level
trophic level
tesic level
What is another name for a primary consumer?
herbivore
carnivore
producer
secondary consumer
What is the tertiary consumer in this energy pyramid?
hawk
snake
frog
grasshopper
What is the primary consumer in this energy pyramid?
grass
frog
grasshopper
hawk
Organisms that hunt and eat other organisms
predator
prey
habitat
niche
parasitism
Any relationship in which two species live closely together?
symbiosis
prey
habitat
niche
parasitism
Both species benefit from relationship?
mutualism
prey
habitat
niche
parasitism
An area where an organism lives?
mutualism
prey
habitat
niche
parasitism
All living organisms in an environment?
mutualism
biotic factors
habitat
niche
parasitism
One organism benefits, the other is neither helped nor harmed?
commensalism
biotic factors
habitat
niche
parasitism
Organism lives on or in another and harms it?
commensalism
biotic factors
parasitism
niche
parasitism
Autotrophs like plants, make their own food through
anerobic respiration
aerobic respiration
photosynthesis
lactic acid fermentation
Arrows in food webs and food chains show
predator-prey relationships
transfer of energy
mutalistic relationships
patterns of inheritance
Students in two different schools created gardens at their campus. They only planted native plants that do not require extra care. Students from each of the schools were asked to sketch some of the native plants included in their gardens. Sample images from each school are included below.
Which of the following characteristics of the garden environments pictured above has the greatest affect on the types of plants that grow in them?
Temperature
Amount of rainfall
Amount of light
Space
If your local environment begins to turn into a desert, what will most likely happen to the organisms in the environment?
The populations of organisms currently existing in the environment will increase.
The populations of organisms currently existing in the environment will not be affected.
The new desert environment will be unable to support any populations of organisms.
A different variety of organisms will be supported rather than the ones that currently exist.
Which statement best describes the comparison of lake and ocean environments?
The lake and ocean environments support the same organisms because they are both water and are made up of the same elements.
The lake and ocean environments support different organisms because most freshwater organisms cannot live in saltwater.
The lake and ocean environments support the same organisms, but they will look different because of the type of water.
The lake and ocean environments support different organisms because ocean organisms are blocked by land from getting into lakes.
The Texas Mock Orange is a type of flowering plant that is only found growing naturally in Texas. Which of the following is the most likely reason that they only grow naturally in Texas?
The type of animals that eat the Texas Mock Orange are not found in other environments.
The amount of sunlight the Texas Mock Orange needs is not found in other environments.
The type and amount of water the Texas Mock Orange needs is not found in other environments.
The types of organisms that pollinate and help the Texas Mock Orange reproduce are not found in other environments.
5 Four students were asked to observe microhabitats of their schoolyard and describe how microhabitats are able to support different varieties of organisms. Their observations and responses are shown below.
Which student best describes how microhabitats are able to support a variety of organisms?
student 1
student 2
student 3
student 4
A student rolled over a wooden log and made the following observations.
Which observations support the student’s claim that the log represents a microhabitat?
Observation 1 and 2
Observation 1, 2, and 3
Observation 1, 2, and 4
Observation 3 and 4
Students created the table below based on observations of two microhabitats near their school.
Based on the information above, what is the best explanation for the different variety of organisms in the two microhabitats?
The rotting log and grassy area are in different biomes.
Conditions for survival are different in each location.
The rotting log has predators while the grassy area does not.
There is more space in the rotting log than in the grassy area.
Refer to the food webs above. If the grasses in each ecosystem are attacked or killed by a disease, which ecosystem will most likely survive?
The prairie ecosystem, because fewer organisms eat grass
The tundra ecosystem, because there is a variety of producers
The prairie ecosystem, because there are fewer top predators
The tundra ecosystem, because it has more herbivores
Which statement below best describes how biodiversity contributes to the sustainability of an ecosystem?
A variety of plant and animal species allows for more survivors of a natural disaster.
Having more species in an ecosystem allows the human population to increase in size.
Low biodiversity reduces the competition for resources, which helps native species survive.
Fewer species in the ecosystem reduces the likelihood that disease spreads through the ecosystem.
Which of the following situations contributes to the sustainability of an ecosystem?
Increase in biodiversity
Decrease in biodiversity
Extinction of a population from the ecosystem
Removal of many populations of organisms
Which event would most likely cause an ecosystem to have the lowest biodiversity and population sizes 3 years later?
Clearing land for a highway
A river floods a cornfield
A forest fire destroys the plant growth
A lava flow creates a new section of land
The role of a pioneer species in primary succession is to change a bare habitat into one that is suitable for other organisms. A species that is responsible for primary succession in an ecosystem is most likely able to —
survive any predator
migrate during the winter
live at high altitudes
carry out photosynthesis
Which of the following sequences most likely represents ecological succession on a recently abandoned wheat field?
grasses → flowering plants → shrubs → native trees
native trees → shrubs → flowering plants → grasses
shrubs → grasses → native trees → flowering plants
flowering plants → native trees → shrubs → grasses
What is the relationship between ecological succession and equilibrium in an ecosystem?
Ecological succession leads to equilibrium in an ecosystem.
Ecological succession prevents ecosystems from ever reachingequilibrium.
There is no relationship between ecological succession and equilibrium.
Ecological succession and equilibrium are the same thing.
A hurricane hits a coastal prairie and destroys the habitat. Years later, there is an appearance of small plants with rapidly spreading roots.
This vegetation describes —
a microhabitat
primary succession
secondary succession
biodiversity
A flower bed is created at a school so flowers can be planted in the autumn.
Over the summer, the flower bed is ignored. Which of the following should the students expect to find when they come back to school?
When forest fires destroyed many of the pine trees in Bastrop State Park, the burned areas began secondary succession. What is the role of succession in this example?
Creating new soil by chemical and physical weathering of rocks
Restoring the ecosystem through grass, shrub, and tree stages
Changing the landscape to be more fire resistant in the future
Opening the land for new uses like farming and raising livestock
to pass through is called -
because of the effect they can have on the environment.
Which of the following is a possible negative effect of the use
of these chemicals on the environment?
These chemicals are expensive to produce.
A forest fire can have which of the following positive effects?
Provides heat mammals need in colder seasons
Increases annual rainfall by forming more clouds
Clears underbrush to allow new plants to grow
Drives away predators that eat smaller animals
Sand dunes are large piles of sand that can be found in the desert. What causes these sand dunes to form?
Water
Wind
Earthquakes
Volcanoes
Canyons are formed by -
earthquakes breaking rock layers apart.
wind smoothing out rock formations.
lava flowing from nearby volcanoes.
rivers carrying sediments that erode land.
Canyons are formed by -
earthquakes breaking rock layers apart.
wind smoothing out rock formations.
lava flowing from nearby volcanoes.
rivers carrying sediments that erode land.
Sediments, which are deposited at the mouth of a river, create a -
lake
volcano
canyon
delta
How might runoff from farms adding fertilizer to a pond have a negative effect?
Rapid growth of algae could cover the pond, cutting off sunlight to other organisms.
Increased volume in the pond will make it harder for fish to find food.
Chemicals in the fertilizer could enter the soil around the pond and be trapped there.
Fertilizers could speed the rate of deposition of sediments in the pond.
A student’s model of an area near a city depicts many activities that affect the quality of the water in the area.
How does the agricultural activity most likely affect the surface water of the area?
Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants.
Excess crop material accumulates on the riverbanks, slowing the movement of the river water.
Crops reduce erosion, increasing the amount of soil entering the river.
Crops absorb pure water from soil, causing the remaining water to contain more salt.
