3rd Grade Science : Life Science
Study concepts, example questions & explanations for 3rd Grade Science
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Example Questions
Example Question #61 : Life Science
Sawney is excited to take care of her first plant all by herself. Her mother gave her a sunflower, and she decides to keep it in her windowless bedroom. She waters it every day and shines a lamp on it. She plays music and takes pictures to show her friends. After about a week, it was not looking too good; the leaves were shriveled and turning black, the petals were drying up and falling off. She realized her plant was dying.
What environmental factor most likely caused the plant to begin to die?
Windowless bedroom
Watering the plant
Taking pictures
Playing music
Windowless bedroom
Environmental factors are outside factors, something outside of, in this case, the plant's control that affects its life. Sawney has a windowless bedroom, so she decided to shine a light on the plant. Plants must have natural sunlight to create their food through photosynthesis. If Sawney did not provide the plant with natural sunlight, this is what the plant is being affected negatively and is now dying.
Example Question #3 : Environmental Impact On Traits
Sawney is excited to take care of her first plant all by herself. Her mother gave her a sunflower, and she decided to keep it in her windowless bedroom. It has a bright green stem and leaves, has beautiful yellow petals, and is tall. She waters it every day and shines a lamp on it. She played music and took pictures to show her friends. After about a week, it was not looking too good; the leaves were shriveled and turning black, the petals were drying up and falling off. She realized her plant was dying.
Which excerpt from the passage is evidence that the plant is being negatively impacted?
"...the leaves were shriveled and turning black, the petals were drying up and falling off."
"Sawney is excited to take care of her first plant all by herself."
"...bright green stem and leaves, has beautiful yellow petals, and is tall."
"She played music and took pictures to show her friends."
"...the leaves were shriveled and turning black, the petals were drying up and falling off."
In this passage, the sunflower plant is being negatively impacted by the environmental factors out of its control. Sawney has placed the plant in a windowless bedroom and replaced sunlight with a lamp. The excerpt, "...the leaves were shriveled and turning black, the petals were drying up and falling off." demonstrates that there is a negative impact on the plant.
Example Question #7 : Use Evidence To Explain Environmental Impacts On Traits
Take the dog for daily walks
All of the answer choices are correct
Stop giving him treats
Put the dog on a diet
All of the answer choices are correct
Matt and the dog's environment have had an impact on the dog's weight. This trait is predetermined by genes and then effected by choices like diet and exercise. When Matt overfed the dog, gave it too many treats, and did not take it out for long walks, the dog gained weight. He has impacted this inherited trait with environmental changes. If Matt wants to reverse these changes, he will need to change the environment the dog is living in. Matt can give the dog fewer treats, put the dog on a diet, and he can take the dog on long walks. All of these new factors in the dog's life may reverse the weight gain.
Example Question #2 : Use Evidence To Explain Environmental Impacts On Traits
Sasha planted huge shrubs and trees in her backyard to give her privacy from her neighbors. She created lots of shade to sit in on hot summer days. What she didn't realize was that all of the darkness was hurting her smaller plants. They are supposed to be green and stand straight, but now they are wilting and brown.
What can Sasha do to reduce the environmental impact that the tall shrubs have on her small plants?
Trim the shrubs to allow more light
Move the chairs further from the small plants
Plant new short shrubs next to the tall ones
There is no way to reduce the impact on the small plants
Trim the shrubs to allow more light
Plants inherit traits from their parents, including their stem color, leaf shape, flower color, and height. If the environmental factors impact those traits, that means they are causing changes. In this case, the difference is a negative one. The plants need sunlight to grow tall and healthy, but the large shrubs and trees are blocking that light. If Sasha trims the tall shrubs, it may allow more light to filter down to the small plants. If the small plants receive more sunlight, they may begin to regrow leaves and become stronger and healthier.
Example Question #1 : Explain How Traits Are Influenced By The Environment
Even though traits are inherited, they are also influenced by the environment. The environment and the characteristics of an organism are in a cause and effect relationship.
False
True
True
This statement is true. Organisms are born with specific traits inherited from their parents, but the environment can influence them. In cases where food is limited, a typically massive animal may be skinny, or shade over a plant may cause it to be stunted in growth.
Example Question #1 : Explain How Traits Are Influenced By The Environment
How were the plant's traits influenced by the environment based on the data table?
The plants received the same amount of water and were influenced equally.
The plants in Field A were shorter because they got too much water.
The plant was not affected by any environmental factors.
The plants in Field B were shorter because they did not receive enough water.
The plants in Field B were shorter because they did not receive enough water.
The data table presents two wheat fields that received a different amount of water each day. The plant that received the least amount of water was the shortest. Based on this evidence, environmental factors have influenced the height of the plant.
Example Question #2 : Explain How Traits Are Influenced By The Environment
Bullfrog A - She lives in a pond with lots of insects, Lilly pads, and freshwater. She is a normal-sized frog and gets plenty to eat so she can grow strong.
Bullfrog B - She lives in a backyard puddle with a few bugs, grass, and only rainwater. She is a small frog and a little on the thin side.
What trait is being influenced by the environment?
The frog's weight
The frog's height
The frog's color
The frog's pattern
The frog's weight
The trait that is being influenced by the environment is the frog's weight. Bullfrog A is a healthy weight because she has plenty to eat. Bullfrog B is thin and small because she does not have plentiful food. If the food source for an animal is scarce, the size, weight, or growth speed of that animal may change. The environment influences the traits of both plants and animals.
Example Question #4 : Explain How Traits Are Influenced By The Environment
Bullfrog A - She lives in a pond with lots of insects, Lilly pads, and freshwater. She is a normal-sized frog and gets plenty to eat so she can grow strong.
Bullfrog B - She lives in a backyard puddle with a few bugs, grass, and only rainwater. She is a small frog and a little on the thin side.
How does the environment influence the traits of the frog?
The size of the water source influences the frog's color
The size of the frog influences the water source
The number of insects influences the frog's weight
The type of plants influences the frog's height
The number of insects influences the frog's weight
The environment influences a plant or animal's traits. Depending on the conditions that the animal or plant lives in, they will make adaptations to survive. In the case of our bullfrogs, there is a difference in size and weight. Bullfrog A has access to a plentiful food source and is large and healthy. Bullfrog B is smaller and thin because she only has access to a few bugs. Due to a difference in the environmental factors, there is a difference in the weight of the frogs.
Example Question #5 : Explain How Traits Are Influenced By The Environment
What might happen to your adult height if you do not have proper nutrition as a child?
You may be shorter than expected.
You may be heavier than expected.
You may grow taller than expected.
You may be lighter than expected.
You may be shorter than expected.
Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a child does not get proper nutrition, their height may be stunted as an adult. Without the right vitamins and nutrients, they may not reach their inherited potential due to environmental influences.
Example Question #1 : Explain How Traits Are Influenced By The Environment
How would a dog's weight be impacted if all they ate lots of treats and never exercised?
They may grow very tall.
They may be overweight.
They may be very short.
They may be underweight.
They may be overweight.
Environmental factors influence traits in plants and animals. These traits include things like weight, height, size, and color. If a dog does not get proper nutrition and exercise, their weight will be negatively impacted. The dog is likely to be overweight if the environmental factors are not changed. Without the right vitamins, nutrients, and exercise, they may not reach their inherited potential due to environmental influences.
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