WorksheetsEnergy and Matter Ecosystems
Total questions: 26
Worksheet time: 27mins
Plants, animals, and decomposers (which consume dead things) are in a forest ecosystem. Scientists are studying photosynthesis in the forest. Which group or groups of organisms should they study?
all organisms in the forest
animals and decomposers
plants and decomposers
plants
A jungle ecosystem has plants, animals, and decomposers (which consume dead things). Scientists are interested in studying cellular respiration in the jungle. Which group or groups of organisms should they study?
plants
animals and decomposers
all organisms in the jungle
animals
Giant pandas live wild in the mountains in China, where they eat bamboo from its forests. The number of molecules that store energy has decreased in both the bamboo and the pandas. What has happened to the amount of carbon in the bamboo and the pandas?
The amount of carbon in the bamboo and pandas . . .
has not changed.
is not related to the number of molecules that store energy.
has increased.
has decreased.
Climbing ivy grows on the sides of buildings. The ivy on one building has been taking in carbon from the air for several hours.
Is the ivy in sunlight? What has happened to the number of molecules that store energy in the ivy plants?
The ivy . . .
is in sunlight. The number of molecules that store energy in the ivy has decreased.
is in sunlight. The number of molecules that store energy in the ivy has increased.
is not in sunlight. The number of molecules that store energy in the ivy has decreased.
is not in sunlight. The number of molecules that store energy in the ivy has increased.
Pea plants have been in the sunlight since early morning. What can the pea plants do because they are in sunlight? What does this mean for the number of energy storage molecules in the pea plants?The pea plants can…
give off carbon to the air. Giving off carbon allows them to make energy storage molecules.
give off carbon to the air. Giving off carbon uses up energy storage molecules.
take in carbon from the air. The carbon is used to break down energy storage molecules.
take in carbon from the air. The carbon is used to make energy storage molecules.
Hippos spend most of their time in rivers, but they come out of the water to eat grass. It is dark out, and this hippo is not eating.
What is happening to the carbon in the air around the hippos and the grass nearby?
Carbon is not moving into the air; it is only moving out of the air.
With this information, there is no way to know for sure.
Carbon is moving into the air and out of the air, at the same time.
Carbon is only moving into the air; it is not moving out of the air.
Parrotfish live in the ocean and eat plantlike organisms called algae. Sunlight is shining on the fish and the algae. Is carbon moving into the living things, moving out of the living things, or both?
Carbon is moving into and out of the living things, at the same time.
Carbon is only moving into the living things; it is not moving out of them.
Carbon is only moving out of the living things; it is not moving into them.
There is no way to know for sure, with this information.
What kind of things perform cellular respiration?
most living cells
plants only
animals only
yeast only
If producers are doing photosynthesis in an closed area, without consumers, the carbon in abiotic matter would be
Going up
Going down
Staying the same
There isn't enough information to tell
If there is less carbon dioxide and sun for a producer, there will be
More energy molecules
The same number of energy molecules
Less energy molecules
With this information, there is no way to know for sure
A tortoise is eating cactus on a sunny day. Is carbon moving into the air, out of the air or both?
Carbon is moving into the air by cellular respiration, and out of the air through photosynthesis
Carbon is not moving into the air, it is only moving out of the air through photosynthesis
Carbon is only moving into the air by cellular respiration; it is not moving our of the air through photosynthesis
With this information, there is no way to know for sure
A scientist set up an experimental ecosystem in a sealed room with no windows.The experimental ecosystem has plants and animals that eat those plants. The scientist can control whether the room is light or dark with a light switch outside the room.
The amount of carbon in the air of the ecosystem started out low. Then the amount of carbon in the air started to increase.
Is the increase because the scientist switched the light on or because she switched the light off? What happened to the number of energy storage molecules in the living things?
The scientist . . .
switched the light off, and the number of energy storage molecules in the living things increased.
switched the light off, and the number of energy storage molecules in the living things decreased.
switched the light on, and number of energy storage molecules in the living things increased.
switched the light on, and number of energy storage molecules in the living things decreased.
A tortoise is eating cactus on a sunny day. Is carbon moving into the air, moving out of the air, or both?
Carbon is not moving into the air; it is only moving out of the air through photosynthesis
Carbon is moving into the air by cellular respiration, and out of the air through photosynthesis.
Carbon is only moving into the air by cellular respiration; it is not moving out of the air through photosynthesis.
With this information, there is no way to know for sure.
Lily has an aquarium with water, plants, and fish that eat the plants. The aquarium is sealed so no material can get in or out, and has glass sides that allow light to come in.
What is the total amount of carbon in the aquarium when it is in the sun and when it is in the dark?
The total amount of carbon in the aquarium goes up if there is sunlight
The total amount of carbon in the aquarium goes down when it is dark
The total amount of carbon in the aquarium goes up when it is dark.
The total amount of carbon is exactly the same, but the carbon is found in different placecs.
