QUIET

BALL

UNIT 17-19 EXAM REVIEW 7 T H GRADE

CARBON DIOXIDE IS PRODUCED WHEN WHAT IS CHEMICALLY BROKEN DOWN?

BIOMASS

WHAT HAPPENS TO THE AMOUNT OF CARBON IN THE ENVIRONMENT DURING THE CARBON CYCLE?

The amount of carbon in the carbon cycle stays the same.

WHEN AN ORGANISM DIES, HOW DOES MOST OF THE CARBON FROM THE BODY

RETURN TO THE ENVIRONMENT?

Decomposers break the body down into simpler compounds.

WHY DOES A COMPOST PILE GIVE OFF STEAM

IN THE WINTER?

Stored chemical energy is being converted to thermal energy by the decomposition of biomass.

WHICH ORGANISMS BELONG TO THE SAME

FOOD CHAIN?

Leaves, grasshopper, frog, snake

Berries, squirrel, fox

Leaves, mouse, fox

HOW MANY

PRODUCERS ARE IN

THIS WEB?

Two, the leaves and the berries

HOW MANY TROPHIC

LEVELS ARE IN THIS FOOD

WEB?

Five

Autotrophs (plants), primary consumers (grasshopper, mouse, squirrel, rabbit), secondary consumers (frog, mouse, fox,) , tertiary consumers (owl, snake). Quaternary (owl).

WHAT TYPE OF ORGANISM IS NOT MENTIONED IN

THE FOOD CHAIN?

A Decomposer

WHAT WOULD HAPPEN IF THERE WERE AN INCREASE OF FROGS IN THIS FOOD WEB?

There would be less grasshoppers and more food available for the snakes and owls

WHY DO SOME PLANTS GROW VINES ALONG FENCES AND WOODS?

To get support from nearby objects

HOW DOES TURGOR PRESSURE HELP A PLANT?

The water provides support for the plant

HOW DO PLANTS RESPOND TO GRAVITY AND SUNLIGHT?

Roots grow down and leaves grow up.

WHY DOES THE PHOTOSYNTHESIS FORMULA HAVE THE WORD SUNLIGHT IN THE

EQUATION?

Photosynthesis can not happen without sunlight.

WHAT HAPPENS TO THE ENERGY ABSORBED BY PLANTS DURING PHOTOSYNTHESIS?

It is transformed into chemical energy.

WHICH ORGANISMS ARE RESPONSIBLE

FOR TRANSFORMING RADIANT ENERGY INTO CHEMICAL

ENERGY?

The leaves and the berries (or the producers, or the autotrophs)