This plant hormone is a hydrocarbon gaseous hormone, which is best known for its role in fruit ripening. O A. Auxin O B. Gibberellins C. Strigolactone D. Abscisic acid E. Ethylene

Watch the suggested videos for Plants Response to Stimuli.  a. GeotropismGeotropism Experiment (2:48 minutes)https://www.youtube.com/watch?v=AEo5UsPeB5gb. PhototropismPhototropism Experiment (2:16 minutes)https://www.youtube.com/watch?v=WZ1NRP3OF5w a. For each experimental set up (geotropism and phototropism), identify the dependent and independent variables that have contributed to how plants responded to the stimuli.

Cytokinins, which control root and shoot meristem activities, apical dominance, leaf senescence, root vs. shoot differentiation in tissue culture, are synthesized at transported through and A. root apical meristems, xylem B. shoot apical meristems, xylem C. root and shoot apical meristems, phloem D. young shoots and seeds, phloem and xylem

Explain the differences between plant hormones and plant growth regulators

What mineral deficiency could cause an abnormal development of vascular system, especially xylem? _____________ A. Boron B. Zn C. Nitrogen D. Sodium Some environmental stress factors such as high light intensity, drought, chilling, air pollutants and mineral nutrient deficiencies are harmful to plant, one of the reason is because they: _________________ A. increase the use of energy B. decrease the water movement C. affect the composition, structure and integrity of cell membrane

Elevated levels of this hormone promote seed dormancy? Select one: a. gibberellin b. abscisic acid c. ethylene d. salicyclic acid e. auxin

Which of these plants can cause you some pain and suffering if you come into contact with their leaves during a hike in northern California?

A colour change in the fruit and an increase in its sweetness is due to  a. the plant hormone ethylene b. keeping the fruit in the sun c. picking the fruit off the plant early d. spraying the fruit with abscisic acid e. keeping the fruit in the cold

Explain why ferns and mosses must depend on water for reproduction, and why gymnosperms and angiosperms do not. H▾ E▾ B I A- X₂ X² Ω· 66 X

Which of the following is NOT regulated by Gibberellins? seed germination a. b. fruit growth gravitropism Oc. stem elongation d.