Give experimental evidence to support your answer. No, because other dwarf mutants unable to convert GA 20 to GA 1 do not show growth stimulation by GA 20 . One could argue that GA is acting as a generic stabilizer of RNAs and that this effect is therefore not a specific one. Some seeds germinate only when their endogenous ABA levels are lowered, e.g., by washing out the ABA with rain water. For many fruits the onset of fruit ripening is signaled by a burst of gas release from the fruit.
Ethylene induces genes required for ripening.
CO 2 increase is simply symptomatic of a general increase in catabolism that characterizes ripening. Describe experimental results to support your answer. Plants transformed with antisense to prosystemin are deficient in their systemin levels and in protease inhibitors, and Manduca larvae feeding on transformed plants grow larger than those feeding on wild-type plants. Give experimental evidence for your answer.