Middle School Life Science : Cycling of Matter and Energy in Ecosystems
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Example Questions
Example Question #1 : Cycling Of Matter And Energy In Ecosystems
How do organisms get the energy they need?
Plants get energy from the soil. Animals get energy directly from sunlight.
Plants get energy from fertilizers. Animals get energy from water.
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
Plants do not need energy because they do not move. Animals get energy from food.
Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
The answer is: Plants use energy from sunlight to make sugar molecules. Animals get energy from eating other organisms.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #2 : Cycling Of Matter And Energy In Ecosystems
Why are animals important to the process of photosynthesis?
Animals eat plants which makes space for more plants to grow.
Animals digest food which makes the starting materials for photosynthesis
Animals produce energy in the form of heat, which plants use for photosynthesis.
Animals breathe out carbon dioxide which is a starting material for photosynthesis.
Animals breathe out carbon dioxide which is a starting material for photosynthesis.
The answer is: Animals breathe out carbon dioxide which is a starting material for photosynthesis.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #3 : Cycling Of Matter And Energy In Ecosystems
Which of these are the reactants in the chemical equation for photosynthesis?
CO2 and Sunlight
CO2 and H2O
Sunlight and H2O
CO2 and OH2
CO2 and H2O
The answer is CO2 and H2O.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #1 : Explain The Cycling Of Matter And Energy In Photosynthesis
Which of these are products in the chemical equation for photosynthesis?
C6H12O6 and CO2
C6H12O6 only
C6H12O6 and O2
CO2 and H2O
C6H12O6 and O2
The answer is C6H12O6 and O2.
Example Question #2 : Explain The Cycling Of Matter And Energy In Photosynthesis
Which of these organisms uses energy from the sun to make its own food?
an oak tree
both of these
neither of these
a producer
both of these
The answer is both of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #6 : Cycling Of Matter And Energy In Ecosystems
When an organism grows, it requires matter and energy. Animals get these by consuming plants or other animals. Where do plants get their matter and energy?
from water in the ground
all of these
from chemical reactions that use energy from sunlight
from nutrients in the soil
all of these
The answer is all of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #7 : Cycling Of Matter And Energy In Ecosystems
Photosynthesis is:
The use of chemical reactions to make photographs
The process where plants use energy from the sun to create their own food
The process where plants use energy from the sun to make the ground full of more nutrients
The process of animal respiration
The process where plants use energy from the sun to create their own food
The answer is "the process where plants use energy from the sun to create their own food."
This process is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #8 : Cycling Of Matter And Energy In Ecosystems
What product of photosynthesis is missing in the empty box from the image above?
Energy
Oxygen
Potassium
Magnesium
Oxygen
The answer is Oxygen.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #9 : Cycling Of Matter And Energy In Ecosystems
The image above shows the cycling of matter and energy through photosynthesis. How is energy lost in this cycle?
Energy is used to help plants grow.
All of these
Energy is lost in heat in chemical reactions.
Energy is expended in the activity of animals.
All of these
The answer is all of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
Example Question #10 : Cycling Of Matter And Energy In Ecosystems
The image above shows the cycling of matter and energy through photosynthesis. How is energy lost in this cycle?
Energy is lost in heat in chemical reactions.
All of these
Energy is expended in the activity of animals.
Energy is used to help plants grow.
All of these
The answer is all of these.
Photosynthesis is the process where plants use energy from the sun to create their own food. This is why plants are referred to as producers. In the process of photosynthesis, the energy from sunlight, carbon dioxide, and water are converted into sugar and oxygen through chemical reactions in plant cells. Animals do not produce their own energy, but have to eat plants or other animals to stay alive. Animals breathe in the oxygen created by photosynthesis and exhale carbon dioxide as a product through their own process called cellular respiration.
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