CHAPTER 1 Plants Grow and Change

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Transcript CHAPTER 1 Plants Grow and Change

CHAPTER 1
Plants Grow
and Change
LESSON 1
WHAT ARE
LIVING AND
NONLIVING
THINGS?
living
living
living
nonliving
nonliving
living and
nonliving
All living things grow and change.
All living things need 3 things to grow.
WATER
FOOD
AIR
Nonliving things are not alive.
Nonliving things DO NOT
grow.
Nonliving things DO NOT
change.
 Nonliving things DO NOT
need food, water, and air.
__________________________________________________
Plants need air, water, and light to grow.
People and animals need air, food,
and water to remain living.
•Air, water, light and food are not alive……
so they are nonliving things.
Without nonliving things, living things
could not survive. They would DIE.
THINK ABOUT IT
How are all living things alike?
All living things need food, air, and water.
Living things also grow and change.
How do living things use nonliving things?
Plants use air, water, and light to grow.
People and animals use air, water, and
food to live.
LESSON 2
HOW DO PLANTS
CHANGE AND
GROW?
oPlants need light, air, and water
to change and grow.
o Plants also need nutrients.
Nutrients are minerals found in the soil.
oEach part of the plant helps the
plant get what it needs to grow
and change.
FLOWER
SEEDS
____________
LEAVES
STEM
ROOTS
•seeds ---- a baby plant
•flower
•leaves
•stem
----makes seeds
---- use light, air, and nutrients
to make food
---- holds up plant; moves water
and nutrients through the plant
•roots ---- hold plant in soil; take in water
and nutrients from the soil
Seeds have different parts. Each
part helps the seed grow a new plant.
TINY PLANT
----uses stored food
to grow
SEED COAT
----protects the seed
1. A seed will begin to germinate, or grow, when it
gets water and warmth.
2. First, the roots grow down.
3.Then, a stem grows up.
(**This young plant is called a seedling.**)
4. The seedling continues to grow and change.
It makes more leaves and stems. It gets
taller and thicker.
5. When fully grown, its flowers make fruits that
hold seeds.
THINK ABOUT IT
What happens when a seed germinates?
When a seed germinates, it begins to grow.
The roots begin to grow down and the stem
grows up.
What are some ways plants may change?
Plants change as they grow. They get
larger, grow more stems and leaves, get
thicker, and produce flowers or fruits that
make seeds.
LESSON 3
HOW ARE PLANTS
ALIKE AND
DIFFERENT?
Plants live in almost every part of the world.
Different kinds of plants grow in different
places.
Oak Forest
Desert
Pine Forest
A pine tree has leaves that
look like needles.
Its seeds grow in cones.
An oak tree has leaves that are broad and flat.
Oak trees grow from seeds inside acorns.
A cactus grows in a desert. It stores water in its thick stems.
Its leaves are sharp spines. The spines protect the cactus
from animals that might eat it.
Cactuses flowers grow into fruit.
The seeds of the cactus are inside the fruit.
THINK ABOUT IT
What are some places plants live?
Some of the places plants live are pine
forests, oak forests, and deserts.
How are plants in different places alike
and different?
All plants are living things. They all need air,
water, light, and nutrients. Plants that grow
in different places may look different, and
have different kinds of stems, leaves, and
seeds to help them live and grow.