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10 Cards in this Set

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DEFINE PHOTOSYNTHESIS

PHOTOSYNTHESIS IS A PROCESS BY WHICH


THE PLANTS MAKE THEIR FOOD USING


CARBON DIOXIDE AND WATER. COMBINED


WITH WITH LIGHT ENERGY, THIS PROCESS


PRODUCES SUGAR (GLUCOSE) AND STARCH.


ANOTHER PRODUCT (OR BY-PRODUCT) OF


PHOTOSYNTHESIS IS OXYGEN, WHICH IS USED


BY OTHER LIVING THINGS.

WHAT IS THE CHEMICAL EQUATION AND


THE WORD EQUATION OF PHOTOSYNTHESIS?

6CO2 + 6H2O ---------- C6H12O6 + 6O2




CARBON DIOXIDE + WATER ---------------



GLUCOSE + OXYGEN

WHY DO PLANTS HAVE GREEN COLOR?

THE GREEN COLOR IS BECAUSE OF THE


CHEMICAL CALLED CHLOROPHYLL. IT IS


IMPORTANT FOR PHOTOSYNTHESIS AS IT


HELPS PLANTS GROW AND MAKE OXYGEN.

WHERE IS CHLOROPHYLL STORED?

CHLOROPHYLL IS STORED IN ORGANELLES


CALLED CHLOROPLASTS.

HOW DOES THE SHAPE OF THE LEAVES HELP


THEM IN PHOTOSYNTHESIS?

BROAD, FLAT AND THIN SHAPE OF THE


LEAVES PROVIDES A LARGE SURFACE AREA,


IDEAL FOR THE ABSORPTION OF CARBON


DIOXIDE AND SUNLIGHT.



EXPLAIN THE PROCESS OF PHOTOSYNTHESIS

PHOTOSYNTHESIS IS A SERIES OF COMPLICATED REACTIONS


CONTROLLED BY ENZYMES. CO2 ENTERS THE LEAVES THROUGH


THE STOMATA BY DIFFUSION. WATER IS CARRIED TO THE LEAF IN


THE XYLEM. THEY BOTH PASS INTO THE CHLOROPLAST WHERE THE


LIGHT ENERGY IS ABSORBED BY CHLOROPHYLL. ALL THESE


SUBSTANCES BECOME A PART OF CHEMICAL REACTION THAT


PRODUCES GLUCOSE AND OXYGEN.



WHAT HAPPENS TO GLUCOSE AFTER


IT IS PRODUCED IN THE LEAF?

GLUCOSE IS CONVERTED TO STARCH AND IS


STORED IN THE LEAF UNTIL IT IS NEEDED


AS FOOD FOR THE PLANT.

WHAT IS THE EXTERNAL STRUCTURE


OF A LEAF?

- AXIL


- LAMINA


- LEAF APEX


- MID-RIB


- PETIOLE


- STEM


- STIPULE


- VEIN

WHAT IS THE JOB OF THE WAXY CUTICLE


ON THE SURFACE OF THE LEAVES?

WAXY CUTICLE PREVENTS WATER LOSS.

WHY ARE MOST OF THE PORES THAT LOSE


WATER FOUND ON THE BOTTOM SURFACE


OF THE LEAVES?

IN ORDER TO REDUCE THE TRANSPIRATION,


THE PORES ARE ON THE BOTTOM SURFACE


OF THE LEAVES.