| A | B |
|---|
| Fertilization | occurs when the sperm meets the egg |
| Seed Coat | protects the seed |
| Cotyledon | food storage area for a baby plant |
| Embryo | baby plant inside the seed |
| Germination | occurs when the seed sprouts |
| Seed Dispersal | the moving of seeds from one place to another |
| Types of Seed Dispersal | wind, water, pressure, feces, burial, & attachment to fur or feathers |
| Stimulus | anything that causes a response in an organism |
| Stimulus Examples | loud noise, bad smell, pain, hunger, etc. |
| Response | the reaction to a stimulus |
| Response Examples | yelling, holding one's nose, blinking, yawning, etc. |
| Tropism | a plant response to a stimulus |
| Thigmotropism | a plant's response to touch |
| Phototropism | a plant's response to light |
| Gravitropism | a plant's response to gravity |
| Plant Hormone | a chemical that can affect a plant's responses to tropisms & affect growth |
| Ethylene Gas | a plant hormone that stimulates the ripening process |
| Auxin | a plant hormone that allows plants to grow toward light |
| Photoperiod | a plant's response to the amount of daylight/darkness it receives |
| Long-Day Plants | plants that need less than 10-12 hours of darkness to flower |
| Long-Day Plant Examples | spinach, lettuce, and beets |
| Short-Day Plants | plants that need 12 or more hours of darkness to flower |
| Short-Day Plant Examples | poinsettias, strawberries, and ragweed |
| Day-Neutral Plants | plants that do not require specific amounts of daylight/darkness |
| Day-Neutral Plant Examples | dandelions and roses |
