Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
Structure of a young root |
- protoderm - ground meristem - procambium - apical meristem - quiescent center - root cap |
|
|
Quiescent center concept |
Low levels of division but apparent control over other areas of the meristem. |
|
|
Root cap activities |
- Protection - secretion of mucilage - sensing of gravity |
|
|
What cella secretes mucilage? Gravity? |
Peripheral cells Columella |
|
|
The endodermis has _____ cell walls? |
Subsidized |
|
|
What forces water to travel through cell membranes? |
Endodermis |
|
|
What originates lateral roots? |
The pericycle |
|
|
Whatre adventitious roots? |
- roots that arise from injury, infection, Ariel parts of the plant, and close to vascular tissues |
|
|
What else does the pericycle form? |
Part of the cork cambium |
|
|
What are bacterial nodules? How does this happen? |
Association between roots and nitrogen fixing bacteria. Bacteria uses nitrogenase to catalyze N2 to NH4 (nitrogen fixation). |
|
|
What has haustoria roots? |
Parasitic plants |
|
|
What trees have trunks derived from thousands of fused roots? |
Strangler figs |
