CH 10 SEC 4 ROOTS, STEMS, AND LEAVES

ROOTS  KEY- ROOTS ANCHOR A PLANT TO THE GROUND, ABSORB H2O AND MINERALS FROM THE SOIL, AND SOMETIMES STORE FOOD.  KEY- THE MORE ROOT AREA THE MORE A PLANT CAN ABSORB  KEY-THERE ARE TWO MAIN TYPES OF ROOTS-  1.FIBROUS ROOT SYSTEM  2.TAPROOT SYSTEM

ROOTS  FIBROUS ROOT- CONSIST OF MANY SIMILARLY SIZED ROOTS THAT FORM A DENSE, TANGLED MASS. TAKE MUCH SOIL WITH THEM WHEN YOU PULL THEM OUT OF GROUND.  EX- LAWN GRASS

ROOTS  TAPROOT system - ONE MAIN ROOT WITH SMALLER ROOTS THAT BRANCH OFF THE MAIN ROOT. EX CARROTS

STEMS  KEY- THE STEM PRODUCES BRANCHES, LEAVES, AND FLOWERS.  KEY- IT CARRIES SUBSTANCES BETWEEN THE PLANTS ROOTS AND LEAVES  KEY- THE STEM ALSO PROVIDES SUPPORT FOR THE PLANTS AND HOLDS UP THE LEAVES SO THEY ARE EXPOSED TO THE SUN.

STEMS  KEY- THERE ARE 2 TYPES  1.HERBACEOUS STEMS  2. WOODY STEMS.  HERBACEOUS STEM- NO WOOD OFTEN SOFT. EX- DAISIES

STEMS  WOODY STEMS- SEVERAL LAYERS OUTER IS BARK EX- TREES

LEAVES  KEY- THE STRUCTURE OF LEAVES IS ADAPTED FOR CAPTURING THE SUN’S ENERGY AND CARRYING OUT PHOTOSYNTHESIS.  COPY FIGURE 21 P.384 KEY- THE CHEMICAL EQUATION FOR PHOTOSYNTHESIS CAN BE SUMMARIZED BY THE FOLLOWING Carbon dioxide(CO2)+ water(H20) + light energy = sugar and oxygen(O2)

Transpiration- THE PROCESS BY WHICH WATER EVAPOARTES FROM LEAVES

LEAVES  KEY – plants can close the stomata, OPENINGS at the bottom of their leaves, to prevent from drying out.

SKETCH YOUR SEED EXPERIMENT GROWTH

ANSWER QUESTIONS FROM TEXT P 385  1-ABC  2-AB  3-ABC