horticulture midterm 1
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26 terms
Terms | Definitions |
|---|---|
 the two most important things that human beings recieve from plants | oxygen and food |
| plant purposes | cool and clean air; slow wind; prevent erosion; provide beauty; perfume air' furnish fuel and building materials |
| four basic parts of plant | leaves, stems, roots, and flowers |
| two main functions of stems | move materials and support plant parts |
| what do the stems of dicots do? | continue to produce new cells and grow larger |
| structure of xylem and phloem in monocot | in small bundles scattered throughout stem |
| what does the xylem do? | conducts water and minerals up to the leaves |
| functions of roots | storage of food; absorption of water; anchorage of plants |
| name three vegetables that are roots | carrots, beets, sweet potatoes |
| cause of green color in leaves | chloroplasts |
| green plants need ____ to manufacture food | light, carbon dioxide, water |
| four main parts of a flower | sepal, petal, stamen, pistil |
| what do leaves provide for their plant | a food factory |
| the root system that is easiest to transplant | fibrous roots system |
| example of a plant with a specialized root that stores food and propagates plant | sweet potatoe |
| major function of root hairs | absorb water and minerals from soil |
| pollination starts: | fertilization; growth of the pollen tube; seed formation; production of fruit or seed coat |
| stamen | the male part of the flower that produces pollen and holds anther |
| pistil | female part of flower |
| fertilized eggs in ovary grow into _____ | seeds |
| plant respiration | uses oxygen and gives off carbon dioxide |
| how much do plants respire | 24 hours a day |
| most roots grow poorly in wet soils because | they cannot get enough oxygen |
| how do plant stems breathe? | through small pores called lenticels |
| transpiration | evaporation of water through stomata in the leaf |
| cambium | allows dicot plants to continue to produce new cells after initial cell division |
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