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100
the way a living thing grows and changes
life cycle
100
an animal that lives part of its life on land
amphibian
100
all the babies born to a mammal at the same time
litter
100
where new plants grow from
seed
100
to get from a parent
inherit
200
pumps blood to all of your body
heart
200
the part of a plant that holds and protects seeds
fruit
200
a very young frog
tadpole
200
a young insect
larva
200
all of the bones of the body fitted together
skeleton
300
the hard covering around a seed
seed coat
300
take in air when you breath
lungs
300
after a chrysalis grows around a caterpillar, the caterpillar becomes a________________
pupa
300
a young plant
seedling
300
What does an adult butterfly do to start a new life cycle?
It lays eggs
400
How do you think a tadpole's tail helps it live in water?
Possible answer: The tail helps the tadpole swim
400
How is a newborn mouse different from an adult mouse?
Possible answer: A newborn mouse is very tiny. Its eyes and ears are closed. It does not have hair. An adult mouse has big ears, long whiskers, and a long tail. The eyes of an adult mouse are also open.
400
Can a mouse skip some of the stages in its life cycle and grow from a newborn right to an adult? Explain.
No. A mouse needs time to grow from a newborn to an adult.
400
Why do you think it is important for seeds to spread out?
Possible answer: So that new plants have space to grow.
400
In what ways could a child look different from a parent?
Possible answer: The child could have curly hair and the parent could have straight hair.
500
Describe the life cycle of a frog.
A tadpole hatches from an egg. The tadpole grows legs. As it becomes a young frog, its tail gets smaller. The young frog grows to become an adult frog that may lay eggs. New tadpoles hatch from the eggs.
500
How are living things like their parents?
Living things can inherit shape, size, and color from their parents.
500
How do the lungs and the heart work together?
The heart pumps blood to the lungs. The blood picks up oxygen from the lungs and carries the oxygen from the lungs to all parts of the body.
500
Mice build nests for their babies. What does a nest provide for the baby mice?
Possible answer: A nest gives the baby mice a safe place to grow. A nest might also help keep the baby mice warm.
500
Living things always look exactly like their parents. True or False? Explain.
False. Living things may inherit some things, but they may look different in some ways, too.
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