Unit 7: Plants

Plants are living thingsbecause they are born.

Plants are living thingsbecause they grow.

Plants are living thingsbecause they die.

There are differenttypes of plants,but all have roots,

stems and leaves.

ROOTSThe roots are part ofa plant that grow

underground.

The roots hold the plantin the ground.

A plant gets the water and mineral saltsthrough the roots.

roots

Mineral saltswater roots

Sunlight

The roots of a planthold it in the groundand a plant gets the waterand mineral salts

it needs through them.

The stemThe stem is the partof the plant thatgrows abovethe ground.

The stem usually hasbranches that haveleaves.

http://homeschooling.gomilpitas.com/explore/botany.htm

The stemThere are two types of stems:

Woody stems Non-woody stems

Shrubs Trees Herbs

Woody stems Woody stems are hard.

ShrubsThere are two types of woody stems

Shrubs have a thin stem.

Branches come fromthe ground. ground

Their stems are thick and strong.

trees

Their stemsare called trunks.

Non-woody stemsNon-woody stems are soft and flexible.

Wheat is a non-woody stem.Wheat is soft and flexible.

Mint is a non-woody stem.Mint is soft and flexible.

trees

trunk

Branches

Poplar tree

Oak tree

LeavesLeaves are the green part of a plantthat grow from the stem or branches.

Leaves are the places where plants maketheir own food.

Plants maketheir own foodfrom substancesthey get fromoutside.

Some trees lose their leaves in autunm.

This is adeciduous

tree.

Some trees don´t lose their leaves at one timebut change them little by little.

This is aevergreen

tree.