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6 Sci Ch 9
6th Grade Science Chapter 9 Vocabulary
| Question | Answer |
|---|---|
| TRANSPIRATION | THE LOSS OF WATER VAPOR THROUGH STOMATA OF A LEAF. |
| PIGMENT | A SUBSTANCE THAT REFLECTS A PARTICULAR PART OF THE VISIBLE LIGHT SPECTRUM AND ABSORBS THE REST. |
| PHOTOSYNTHESIS | THE PROCESS IN WHICH PLANTS USE LIGHT ENERGY TO PRODUCE FOOD. |
| PRODUCER | ORGANISM THAT CARRIES ON PHOTOSYNTHESIS TO PROVIDE FOOD FOR OTHER ORGANISMS. |
| RESPIRATION | SERIES OF CHEMICAL REACTIONS BY WHICH ALL ORGANISMS BREAK DOWN FOOD TO RELEASE ENERGY. |
| AEROBIC | REQUIRING OXYGEN. |
| STIMULUS | ANYTHING IN THE ENVIRONMENT THAT CAUSES A RESPONSE. |
| RESPONSE | A CHANGE IN THE BEHAVIOR OF AN ORGANISM. |
| HORMONES | SUBSTANCES MADE BY CELLS FOR USE SOMEWHERE ELSE IN THE ORGANISM. |
| TROPISM | THE RESPONSE OF A PLANT TO AN OUTSIDE STIMULI. |
| AUXIN | PLANT HORMONE THAT CAUSES PLANT STEMS AND LEAVES TO EXHIBIT POSITIVE PHOTOTROPISM. |
| ETHYLENE | PLANT HORMONE THAT CAUSES FRUIT TO RIPEN. |
| PHOTOPERIODISM | A PLANT'S RESPONSE TO THE NUMBER OF HOURS OF DAYLIGHT AND DARKNESS IT RECEIVES DAILY. |
| LONG-DAY PLANTS | PLANTS THAT REQUIRE LESS THAN TEN TO TWELVE HOURS OF DARKNESS TO BEGIN THE FLOWERING PROCESS. |
| SHORT-DAY PLANTS | PLANTS THAT NEED TWELVE OR MORE HOURS OF DARKNESS TO BEING THE FLOWERING PROCESS. |
| DAY-NEUTRAL PLANTS | PLANTS THAT HAVE NO SPECIFIC PHOTOPERIOD. |