SC 101 Chapter 3 - Flowers Fruits and Seeds
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Created by:
mweste9922 on September 28, 2011
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36 terms
Terms | Definitions |
|---|---|
 Purpose of flower and fruits | to produce seeds for reproduction |
| Petals | corolla; attracts insects |
| Sepals | encloses petals; come off pedicel (stalk/receptacle) |
| Filament | long stalk |
| Anther | Produces pollen |
| Pollen | "Male" reproductive sperm |
| Pistil | central long vase shaped |
| Stigma | (sticky tip) receives pollen |
| Style | stalk |
| Ovary | (at base) produces ovules |
| Ovules | "Female" egg cells in ovary |
| stamanate flower | missing pistils |
| pistilate flower | missing staman |
| Monoecious plant | have stamanate and pistilate on same flower |
| Diecious | 2 plants/only has male flower or female (American Holly) |
| Corn tassels | male staminates |
| corn cob/ear | female pistilates |
| clusters | inflorescents |
| Length of Day and Night | most important factor of causing flowering |
| photoperiodism | variation in intensity of light or to varying periods of light and darkness |
| production of florigen | hormone that caes bud to develop |
| short day flower | needs darkness |
| factor of flowering | temperature change, length of day and night, soil nutrients in water (crowding) |
| Pollination | trasfer of pollen from another (stamen) to stigma (pistil) |
| artificial pollination | hybrid cross |
| hybrid | cross between plants in same family but not same species (must prevent self-pollination by removing stamens) |
| Natural Agents | bees, butterflies, moths (insects), wind/ rain, birds, and small animals |
| secrete nector | small amounts |
| pollination purpose | attracts insects (especially bees and birdds who harvest it as food) |
| Glands at base of petals | brush against pollen while collecting nectar |
| pollination is 10-15% | sugar (add bee enzymes and evaporation= honey) |
| carrier flower | looks and smells like rotten meat |
| bright colors at night | moths |
| anitihistamines | reduce inflammation |
| histamine | causes symptoms |
| inflamation | immune system over reacts to pollen |
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