3rd Grade Science : Life Science
Study concepts, example questions & explanations for 3rd Grade Science
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Example Questions
Example Question #3 : Inheritance Of Traits
Why does the kitten in the photo below look different from its mother?
It is a mix of both the mother and father's traits.
The kitten is dirty, and you cannot tell its colors.
That cat is not its mother.
Kittens never look like their mother, only their father.
It is a mix of both the mother and father's traits.
The kitten looks different from the parent because it is a mix of both parents' genes and traits. The mother has orange, white, and brown fur while the kitten only has orange and white. It is possible the father was more orange than other colors, and these genes were the strongest. Every child born is a mix of their two parents, some genes and traits from each will be instilled in the baby. As plants and animals grow older, they also change in appearance and may start to look like one parent more than the other.
Example Question #1 : Explain Variations Of Traits In Groups Of Organisms
DJ and Johar are brothers, but they don't look alike! How can they be brothers but have variations in their appearance?
Children inherit about 75% of their genes from their mother and 25% from their fathers, so they have a mix of traits.
Each child inherits different genes from their parents, in a 50:50 ratio, so they have a mix of traits.
Youngest siblings always get the same traits as their mothers.
Male siblings always look like their father.
Each child inherits different genes from their parents, in a 50:50 ratio, so they have a mix of traits.
When siblings are born, they have different genetic make-ups and inherit different traits from their parents. One child might be born with red hair like the mother and another with brown hair like their father. They may both be tall like their father and have the same shaped eyes like their mother. There will be similarities between the offspring, but no two will be exactly alike because of the differences in the genes they inherit.
Example Question #4 : Inheritance Of Traits
What is an organism? Example: Some organisms are enormous, while others are tiny.
A house or building
A type of recreational vehicle
An individual plant, animal, or living thing
Parts of the body with functions to keep humans alive
An individual plant, animal, or living thing
An organism is a plant, animal, or living thing. Each organism has its traits or characteristics. A trait is a quality or feature that can be used to describe something. Each organism inherits genes from their parents, which determine the mix of traits they receive.
Example Question #1 : Inheritance Of Traits
Nevin's cats recently had kittens. The father is black and white while the mother has orange and white stripes. The kittens are a variation of black, white, orange, spots, and stripes. Why is there such a difference in all of the kitten's appearances?
It is entirely random, and no one knows what any kitten might look like.
The kittens are a mix of the traits and characteristics of both parents.
The kittens are not the offspring of Nevin's cats.
Kittens never look like their parents.
The kittens are a mix of the traits and characteristics of both parents.
Nevin's cats look different because there is a variation in their genes and traits. The kittens each inherit half of their genes from each parent, so they are a mix of the two. No two organisms have identical DNA, so they will not look exactly like their mother or their father, but rather a combination of the two.
Example Question #1 : Describe Plant And Animal Inherited Traits
What is the difference between inherited and learned traits?
There is no difference between inherited and learned traits. They both mean the same thing.
Learned traits are passed down through genes from the parents to offspring. Inherited traits are behaviors that have to be taught.
Both inherited traits and learned traits come from parents. Learned characteristics came from the mother, and inherited traits come from the father.
Inherited traits are passed down to offspring from parents through their genes. Learned traits are taught to the offspring.
Inherited traits are passed down to offspring from parents through their genes. Learned traits are taught to the offspring.
Inherited and learned traits are different. Learned characteristics are things taught to an offspring by the parents. Hunting, creating tunnels, and caring for young are all behaviors that are taught through observation and repetition. These are things that need to be learned. Inherited traits are things that are genetic and with an animal from birth. Both of their parents pass these traits to them, and they become a mix of their parents. Hair color, eye color, fur patterns are all examples of inherited traits.
Example Question #2 : Describe Plant And Animal Inherited Traits
Which answer choice describes the inherited traits of a puppy?
The puppy has the same fur color and pattern as its mother and the same eyes as its father.
The puppy has learned to sit, stay, shake, and speak. He gets a treat when he does it right.
The puppy has a hard time listening to the commands that his owner is teaching him.
The puppy is large and likes to wrestle with his siblings.
The puppy has the same fur color and pattern as its mother and the same eyes as its father.
Inherited traits come from the parents of a young plant or animal. These are traits that are passed along through genes and are a mix of both the mother and father. The statement that describes this puppies' inherited traits is "The puppy has the same fur color and pattern as its mother and the same eyes as its father.". Fur color, pattern, and eye color all are inherited from the parents of an animal. These are not things he has learned or likes to do; these are traits that he was born with.
Example Question #3 : Describe Plant And Animal Inherited Traits
What traits will a baby sunflower inherit from its parent plants?
Flower color, flower position, seed color, seed shape, and leaf pattern.
Fur color, patterns, teeth shape, ear height, and paw shape.
There is not enough information to tell what plants will inherit from their parents.
A baby sunflower will not inherit anything from its parent plants.
Flower color, flower position, seed color, seed shape, and leaf pattern.
Plants inherit traits from their parents that give them their characteristics and appearance. A baby sunflower will grow up to look similar to its parents. They will have similar fower colors, flower positions, seed colors, seed shapes, and leaf patterns. When the plant is young, it may look smaller and immature but will grow to have the same features.
Example Question #4 : Describe Plant And Animal Inherited Traits
What is an inherited trait that a rabbit may get from their parents?
Tricks
Hobbies
Fur color
Favorite food
Fur color
An inherited trait that a rabbit might receive from its parents is the color of its fur. Tricks would be a learned straight, something that has to be taught, and hobbies or favorite foods are personal preferences. The color of its fur would be passed down from the parents to offspring.
Example Question #5 : Describe Plant And Animal Inherited Traits
These kittens are siblings. How can someone tell they are related?
They are sitting together and close.
They all look the same age.
They have similar traits and appearances.
No one could tell they are related.
They have similar traits and appearances.
When looking at the kittens in the photo, someone could tell they are related because they have many of the same traits. The kittens have the same body shape, similar eye colors, and shape, and their fur is in the same color range. The two kittens on the ends also seem to have very faint stripes. These traits have been passed down from their parents, so they are probably similar looking adult cats.
Example Question #11 : Inheritance Of Traits
Which example(s) is a learned behavior rather than an inherited trait?
Speaking English
Flower Color
Fur Length
Leaf Pattern
Speaking English
Inherited traits come from the parents of a young plant or animal. These are traits that are passed along through genes and are a mix of both the mother and father. Learned behaviors are things taught to an offspring by the parents. Hunting, creating tunnels, and caring for young are all behaviors that are taught through observation and repetition. These are things that need to be learned. The color of flower petals, length of animal fur, and patterns on a leaf are all inherited traits. Speaking any language is a learned behavior that must be taught.
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