WorksheetsScience 7 unit a sec 2.0
Total questions: 66
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
What is the name for the picture?
a)
the soil cycle
b)
the rock cycle
c)
the water cycle
d)
the carbon cycle
2.
What is letter C?
a)
condensation
b)
evaporation
c)
precipitation
3.
What is letter B?
a)
condensation
b)
evaporation
c)
precipitation
4.
An organism that gets energy from breaking down dead organisms, non-living material or waste is a(an) ___________.
a)
producer
b)
consumer
c)
decomposer
d)
autotroph
5.
An animal that gets energy from eating both plants and animals is a(an) _____________.
a)
herbivore
b)
carnivore
c)
omnivore
d)
autotroph
6.
A connection of food chains with many food energy paths in an ecosystem is a ____________.
a)
ecosystem
b)
food web
c)
environment
d)
population
7.
In the energy pyramid here, how much of the energy in each level gets lost as heat or used by the organism for survival?
a)
80%
b)
90%
c)
10%
d)
20%
8.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
9.
The arrows in a food chain or web represents what?
a)
They point to the organism that is being eaten.
b)
It shows how sunlight flows within an ecosystem.
c)
They show what direction the energy is flowing between organisms.
d)
They represent how water is transferred within a habitat.
10.
Decomposers affect all levels of the food web.
a)
True
b)
False
11.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
12.
Where do all life forms get their energy?
a)
Earth's Core
b)
Water
c)
Plants
d)
The Sun
13.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
14.
Name the producers in this food web.
a)
seagull and fish
b)
penguin and crab
c)
phytoplankton and seaweed
d)
seaweed and zooplankton
15.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
16.
What pigment absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
17.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
carbon dioxide + water --> oxygen + glucose
b)
carbon dioxide + glucose + water --> oxygen
c)
oxygen + water --> carbon dioxide + glucose
d)
glucose+ oxygen ---> water + carbon dioxide
18.
What gas is released by plants during photosynthesis?
a)
sulfur
b)
carbon dioxide
c)
oxygen
d)
hydrogen
19.
What are the reactants (what's needed) for photosynthesis?
a)
glucose and oxygen
b)
light, water, and carbon dioxide
20.
What process occurs when light energy is captured in autotrophs and converted into sugar?
a)
Photosynthesis
b)
Cellular Respiration
21.
Which organelle performs PHOTOSYNTHESIS?
a)
Chloroplast
b)
Mitochondria
22.
What is one of the reactants of cellular respiration?
a)
energy
b)
glucose
c)
carbon dioxide
d)
water
23.
Where does aerobic respiration take place?
a)
Cytoplasm
b)
Mitochondria
c)
Stroma
d)
Thylakoid
24.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
25.
What are the reactants of cellular respiration?
a)
glucose & carbon dioxide
b)
glucose & oxygen
c)
water & oxygen
d)
water & carbon dioxide
26.
What are the products of cellular respiration?
a)
Water + Energy
b)
Oxygen + Water + Energy
c)
Carbon dioxide + Water + Energy
d)
Oxygen + Glucose
27.
What would happen to the hawk population if the frogs dies or moved out of the area?
a)
The hawk population may be reduced because they do not have enough food.
b)
Nothing would happen to the hawk population because they don't eat frogs.
28.
Which living organisms are decomposers?
a)
snails, earthworms, bacteria, and fungi
b)
trees plants and seaweed
c)
lions, eagles, and sharks
d)
cows, horses, and deer
29.
The type of consumer which breaks down and absorbs dead and decaying plants and animals is a (n) __________ and is responsible for returning ______ material back into the environment.
a)
Decomposers; inorganic
b)
Decomposers; organic
c)
Omnivores; inorganic
d)
Omnivores; organic
30.
Consumers must gather and consume their food for energy. Consumers are classified based on what they eat. Herbivores eat ______, carnivores eat ________, and omnivores eat __________.
a)
Plants; plants and animals; animals
b)
Plants; animals; plants and animals
c)
Plant and animals; plants; animals
d)
Animals; plants; plants and animals
31.
The greatest amount of energy (and biomass) in a healthy ecosystem will be found in the _______.
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Primary Consumers
d)
Producers
32.
Field mice are the primary food source for horned owls in an area. Due to a drought, many field mice left the area. Which result would this drought most likely have on the horned owls?
a)
The horned owl population will consume more field mice.
b)
Horned owls will follow the field mice to a different area.
c)
The horned owl population will increase in the area.
d)
Horned owls will change to a plant-based diet.
33.
Which best describes a way photosynthesis provides resources to animals?
a)
Photosynthesis produces carbon dioxide, decreasing the animal’s need for oxygen.
b)
Photosynthesis increases plant growth, providing places for many animals to live
c)
Photosynthesis produces excess moisture from the plants, reducing the need for a water supply.
d)
Photosynthesis increases plant growth, providing food for carnivores and eliminating the need to hunt.
34.
Below is an example of a simple food chain.
Acorn → Squirrel → Fox → Mountain Lion
What will most likely happen if squirrels are removed from the food chain?
Acorn → Squirrel → Fox → Mountain Lion
What will most likely happen if squirrels are removed from the food chain?
a)
The fox will eat acorns
b)
The fox population will decrease
c)
The trees will produce fewer acorns.
d)
The mountain lion population will increase
35.
In a forest ecosystem, a food chain might look like this:
green plants → rabbit → fox → panther
If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?
green plants → rabbit → fox → panther
If the green plants are destroyed in a forest fire, which short-term effect will this have on the organisms in this food chain?
a)
There would be fewer rabbits for the foxes to eat.
b)
The panthers would have to begin to eat green plants.
c)
There would be an increase in the fox population
d)
There would be more green plants for the rabbits to eat
36.
A producer?
a)
Eats other plants and animals
b)
Makes its own food
c)
Eats dead plants or animals
d)
Makes toys for kids
37.
A consumer?
a)
Makes its own food
b)
Eats dead plants and animals
c)
Eats plants and other animals for energy
d)
Buys toys for kids
38.
A decomposer?
a)
Eats dead plants or animals and breaks down to put nutrients in the soil
b)
Eats plants or other animals for food
c)
Makes its own food
d)
Machine that gathers trash
39.
This organism draws its water from the ground, traps sunlight in its chlorophyll, and makes glucose (sugar) in broad green parts of its body. Is it a...
a)
Producer
b)
Consumer
c)
Decomposer
40.
Frog. Is it a....
a)
Producer
b)
Conusmer
c)
Decomposer
41.
Earthworm. Is it a...
a)
Producer
b)
Consumer
c)
Decomposer
42.
Fungi. Is it a...
a)
Producer
b)
Consumer
c)
Decomposer
43.
An apple tree is a
a)
producer
b)
consumer
c)
decomposer
44.
A hawk is an example of a
a)
consumer
b)
producer
c)
decomposer
45.
Break down dead matter so it can be recycled
a)
microorganism
b)
bacteria
c)
decomposers
d)
oxygen
46.
A microorganism that can be helpful or harmful to humans
a)
bacteria
b)
fungi
c)
air
d)
water
47.
Beneficial or Harmful?
bacteria absorbs nutrients from food for our digestion
a)
beneficial
b)
harmful
48.
Beneficial or Harmful?
bacteria in uncooked chicken
a)
beneficial
b)
harmful
49.
Beneficial or Harmful?
bacteria used to make cheese and yogurt
a)
beneficial
b)
harmful
50.
Beneficial or Harmful?
yeast used to cause bread to rise
a)
beneficial
b)
harmful
51.
Beneficial or Harmful?
bacteria cause Strep Throat
a)
beneficial
b)
harmful
52.
TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.
All of the carbon in existence is continually recycled in the carbon cycle.
a)
True
b)
False
53.
What does NOT produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
54.
Combustion is another word for __________.
a)
Transportation
b)
Respiration
c)
Fossil Fuels
d)
Burning
55.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
56.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
57.
Carbon dioxide is created by
a)
Burning fossil fuels
b)
Cellular respiration
c)
Decomposing organic matter
d)
All answers are correct
58.
What is the role of decomposers in an Ecosystem?
a)
They recycle matter and nutrients to form fossil fuels
b)
They are burn and release as carbon dioxide
c)
Decomposers are responsible to turn oxygen into carbon dioxide
d)
They recycle energy back to the sun
59.
something a person should do
a)
responsibility
b)
naturalization
c)
citizen
d)
selective service
60.
Where does a plant get water from?
a)
Water is collected from the ocean.
b)
Water is taken up from the soil or the air.
c)
Water is stored when it rains.
d)
Water is bought from Costco.
61.
What two materials are needed for photosynthesis?
a)
Water and soil.
b)
Carbon dioxide and water.
c)
Carbon dioxide and chlorophyll.
d)
Peanut butter and jelly.
62.
What is photosynthesis?
a)
The process plants use to turn carbon dioxide and water into food.
b)
The process plants use to chlorophyll and sunlight into air.
c)
The process plants use to turn sunlight and chlorophyll into soil.
d)
The process plants use to turn chocolate and milk into chocolate milk.
63.
Where does a plant get carbon dioxide from?
a)
A plant gets carbon dioxide from the soil.
b)
A plant gets carbon dioxide from the air.
c)
A plant gets carbon dioxide from the water.
d)
A plant gets carbon dioxide at the Shell gas station.
64.
How can photosynthesis be related to cellular respiration?
a)
What's produced by one is needed for the other
b)
They both produce the same products
c)
They both have the same reactants (need the same things)
d)
These 2 processes have nothing in common
65.
Why is photosynthesis important?
a)
creates oxygen for animals to breath
b)
creates energy for heterotrophs to use
c)
creates food for plants to use
d)
all of these are correct
66.
What is another name for glucose?
a)
Chlorophyll
b)
Chloroplasts
c)
Stomata
d)
Sugar
100 %
