5th Grade Science : 5th Grade Science
Study concepts, example questions & explanations for 5th Grade Science
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Example Questions
Example Question #1 : Support How Plants Need Air And Water To Grow
Plants need ______________ from the air to complete the process of photosynthesis. They use this substance to create sugar and carbohydrates for nutrition and oxygen for cell respiration.
carbon dioxide
potassium
moisture
helium
carbon dioxide
Plants need water, air, sunlight, and carbon dioxide to survive. Plants take in carbon dioxide from the air around them, and through the process of photosynthesis, they use the CO2 and sunlight to make food for themselves. They cannot eat in the same manner as humans and animals, so carbon dioxide is an essential part of their survival process.
Example Question #5 : Support How Plants Need Air And Water To Grow
A group of students had two identical trays of soil, each with ten tomato seedlings planted in them. Tray A was placed in direct sunlight. Tray B was placed in the dark. Both trays were given the same amount of water. After four weeks, the students observed both trays. Which tray of seedlings will have the most growth?
Both of the trays will have the same growth because they both received equal amounts of water.
Tray B will have had more growth because plants grow best in dark environments.
Neither tray will have any growth because they did not add fertilizer, which plants need.
Tray A will have had more growth because plants need sunlight to grow.
Tray A will have had more growth because plants need sunlight to grow.
In this scenario, the plants with the most growth would be the plants in tray A. The plants in tray A received not only water (which plants must have to survive) but also sunlight. Plants need sunlight for the process of photosynthesis. If plants do not have access to air and sunlight, they cannot make their food and survive. The plants in tray B were deprived of sunlight, so they will not have as much growth as tray A.
Example Question #31 : 5th Grade Science
What is a decomposer in the food chain?
A decomposer breaks down organic material
A decomposer is at the top of the food chain and is an apex predator
A decomposer eats producers
A decomposer is responsible for providing energy to tertiary consumers
A decomposer breaks down organic material
A decomposer is an organism that breaks down organic material. This includes the remains of dead organisms. Bacteria, worms, snails, slugs, and fungi are types of decomposers. All organisms undergo decomposition after death.
Example Question #32 : 5th Grade Science
What is the role of a decomposer in an ecosystem?
Break down dead organisms
Produce oxygen for consumers
To capture the energy of the Sun for plants to make food
Bring nutrients to producers and consumers
Break down dead organisms
A decomposer is an organism that feeds on and breaks down dead plant or animal matter, making organic nutrients available to the ecosystem. Often a decomposer is a bacterium, fungus, or invertebrate. Decomposers play a critical role in the flow of energy through an ecosystem. Decomposers make vital nutrients available to an ecosystem’s primary producers—usually plants and algae.
Example Question #23 : Life Science
What would happen in a food chain if decomposers were removed?
Primary consumers will have nothing to eat and starve.
Producers would not have enough nutrients, and waste would pile up.
The Sun will direct its energy towards other organisms in the food chain.
Final consumers will have to start eating producers.
Producers would not have enough nutrients, and waste would pile up.
If decomposers were removed from a food chain, there would be a break down in the flow of matter and energy. Waste and dead organisms would pile up. Producers would not have enough nutrients because, within the waste and dead organisms, nutrients would not be released back into the ecosystem.
Example Question #1 : Movement Of Matter
How do decomposers assist producers in moving matter in the food chain?
Decomposers distract many of the primary consumers from threatening or eating the producers.
Decomposers do not help producers in any way; in fact, they are harmful to them.
Decomposers recycle nutrients back into the soil so that they can be taken up by the roots of plants.
Decomposers attract more sunlight which gives producers the energy they need to make food.
Decomposers recycle nutrients back into the soil so that they can be taken up by the roots of plants.
Decomposers play a vital role in keeping the food chain functioning properly. As decomposers break down the remains of dead organisms and produce waste, nutrients are recycled back into the soil for producers (plants) to absorb through their roots. Without decomposers, there would be a buildup of debris, remained, and a lack of nutrients in the food chain.
Example Question #25 : Life Science
If Jessa is making a model of a food chain and needs to include decomposers, what type of organism could she use as an example?
Bacteria
Fungi
All of the choices are correct
Worm
All of the choices are correct
A decomposer is an organism that feeds on and breaks down dead plant or animal matter, making organic nutrients available to the ecosystem. Often a decomposer is a bacterium, fungus, or invertebrate. Decomposers play a critical role in the flow of energy through an ecosystem. Decomposers make vital nutrients available to an ecosystem’s primary producers—usually plants and algae. A worm, bacterium, or fungi would all be acceptable examples of a decomposer.
Example Question #1 : Model The Movement Of Matter Among Decomposers
Organisms that feed on the remains or waste of other organisms are known as ___________.
decomposers
consumers
producers
predators
decomposers
A decomposer is an organism that feeds on and breaks down dead plant or animal matter, making organic nutrients available to the ecosystem. Often a decomposer is a bacterium, fungus, or invertebrate. Decomposers play a critical role in the flow of energy through an ecosystem. Decomposers make vital nutrients available to an ecosystem’s primary producers—usually plants and algae.
Example Question #31 : Life Science
Which organism below is an example of a decomposer?
Fungi
Osprey
Plankton
Oak tree
Fungi
Fungi is a decomposer. Decomposers play a vital role in keeping the food chain functioning properly. As decomposers break down the remains of dead organisms and produce waste, nutrients are recycled back into the soil for producers (plants) to absorb through their roots. Without decomposers, there would be a buildup of debris, remained, and a lack of nutrients in the food chain.
Example Question #32 : Life Science
Composting takes advantage of the natural process of decomposition by
releasing harmful chemicals into the atmosphere.
decreasing the Earth's temperature.
returning energy and nutrients to the environment.
creating clean drinking water for humans, plants, and animals.
returning energy and nutrients to the environment.
Composting is a form of decomposition and takes advantage of the natural bacteria, fungi, and organisms that break down waste. Many people will collect kitchen scraps and debris, let the organic matter break down, and then spread it in gardens or potted plants because it is rich in nutrients. Decomposers play a vital role in keeping the food chain functioning properly. As decomposers break down the remains of dead organisms and produce waste, nutrients are recycled back into the soil for producers (plants) to absorb through their roots. Without decomposers, a buildup of debris remained and a lack of nutrients in the food chain.
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