Gr3 Science U5 Lesson 1 Life Cycles

Terms in this set (38)

organism
a living thing
reproduce
process where an organism makes more of its species
diverse
something that comes in many different kinds
life begins, growth and development, maturity, reproduction
What is the pattern for all life cycles?
so that organisms can continue to live on Earth
Why is reproduction important?
The seed coat, the food storage, and the embryo (the green part).
What are the three main parts of a seed?
sizes, shapes and colors
Seeds come in many different ___________________.
parts
All seeds have the same ___________.
air, the right temperature, sun, the right amount of water, and to be completely covered with dirt
What do all seeds need to sprout?
seed coat
the outside part of the seed that protects the tiny plant inside
food storage
The seed has ____________ that the tiny plant uses when it starts to grow into a new plant
embryo
The _________, the green part, will grow into the leaves and the roots
egg
Most animals start as an _______ which can be carried either inside their body or outside of their body.
inside the egg
When an animal lays eggs outside of its body, the young animal grows _______________.
inside the mother's body
Most mammals, the egg starts developing into a young animal ______________________________. When the young animal is the right size, it is born.
seed, sprout, seedling, adult plant
What are the stages in the life cycle of a plant?
adult reproduction
What stage in a life cycle keeps the same kind of organisms living after others have died?
They are both organisms.
In what ways are a tree and a chicken the same?
by it's outer shell, called the seed coat
How is a plant seed protected?
the food storage
Which part of the seed gives it energy to grow?
It will become a seedling that will grow into a flower.
What will happen in the life cycle after a seed sprouts?
a butterfly and a frog
Which animals have a metamorphosis?
tadpole
What is a frog called before it grows legs?
chrysalis
the cocoon a caterpillar goes into
No
Do all animals have a metamorphosis?
life cycles
What do you call the different stages that plants and animals go through as they grow?
1. Egg 2. Larva or caterpillar 3. Pupa (the chrysalis/cocoon is formed) 4. Adult Butterfly
What are the stages in the life cycle of a butterfly?
egg, tadpole, frog
What are the stages in the life cycle of a frog?
an egg
What do most animals start life as?
It's a big white egg. It's one of the largest birds' egg.
Describe what an egg laid by an ostrich is like.
a bird egg has a hard covering and a fish egg has a soft covering
What is the difference between a bird egg and a fish egg?
growth and development
What is the second stage in the life cycle?
it is living
How is each organism the same when life begins?
To ensure that the eggs will have food once they hatch.
Why does a female butterfly leave its eggs on leaves or stems?
larva
Another name for caterpillar is _______________.
molting
As a caterpillar continues to grow it sheds its skin, which is called _____________.
metamorphosis
In the pupa stage, the caterpillar is undergoing a transformation called ________________________.
mate
The adult butterfly will take flight, search for food and a _______. The life cycle will start all over.
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