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6thGrFromCh5Sec2,4&5
6th Grade From Bacteria to Plants Chapter 5 Sec. 2,4,&5
| Question | Answer |
|---|---|
| gymnosperm | a seed plant that produces seeds that are not enclosed by a protective fruit |
| cones | reproductive structures covered with scales |
| ovule | a structure that contains an egg cell |
| tropism | a plant's growth response toward or away from a stimulus |
| hormone | a chemical that affects how the plant grows and develops |
| auxin | a plant chemical that speeds up the rate at which a plant's cells grow |
| photoperiodism | a plant's response to seasonal changes in length of night and day |
| dormancy | a period when an organism's growth or activity stops |
| annuals | flowering plants that complete a life cycle within one growing season |
| biennials | angiosperms that complete their life cycle in two years |
| perennials | flowering plants that live for more than two years |
| precision farming | a farming method in which farmers fine-tune the amount of water and fertilizer they use to the requirements of a specific field |
| hydroponics | a farming method in which plants are grown in solutions of nutrients instead of in soil. |
| genetic engineering | when scientists alter an organism's genetic material to produce an organism with qualities that people find useful |
Created by:
Karen Copanic
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