3 Written Questions

1. active transport from cell to cell in a specific direction. Auxin is a modified tryptophan amino acid and after synthesis, it goes through this process by means a chemiosmotic process
2. high concentrations of GA cause rapid elongation of stems; this can occur in rice plants when fungus that produces GA attacks the plant
3. synthesized in young leaves, roots, and seeds but are often transported to other parts of the plant

3 Multiple Choice Questions

1. plant responses to light
   1. phototropism
   2. Cytokinins
   3. geotropism
   4. bolting
2. group of hormones that stimulate cytokinesis (cell division); variations of the nitrogen base adenine. produced in roots and are transported throughout the plant; influence the direction of organ development; stimulate growth of lateral buds; been found to decay senescene of leaves and are sprayed on cut flowers and fruit to prolong their usefulness
   1. phototropism
   2. bolting
   3. gibberellins
   4. Cytokinins
3. plants responses to gravity
   1. Cytokinins
   2. geotropism
   3. bolting
   4. phototropism

2 True/False Question

1. Auxin (IAA) → high concentrations of GA cause rapid elongation of stems; this can occur in rice plants when fungus that produces GA attacks the plant
   

   True        False

2. gibberellins → group of plant hormones that promote cell growth; involved in promotion of fruit development and of seed germination, and the inhibition of aging in leaves
   

   True        False