Assertion :Hydrongea, petunia, geranium flowers are natural indicators. Reason :They all works based on smell.
Answers
Answer:
these all are natural Indicators but they are not olfactory indicators ( do not work according to smell)
Answer:
Assertion: Hydrangea, Petunia, and Geranium flowers are natural indicators. Is true.
Reason: They all work based on smell. Is False.
Explanation:
The flowers of Hydrangea, Petunia, and Geranium are acting as natural PH indicators when grown in different types of soil( acidic, neutral, and alkaline) due to the presence of a water-soluble pigment called Anthocyanine in their vacuole. this pigment gives these flowers different colors depending on the PH of the soil.
Hydrangea produces a blue-colored flower when grows in acidic soil and produces red and pink flowers in basic or neutral soil.
Petunia produces reddish-purple flowers in acidic soil and blue flowers in basic soil.
Geranium produces orange-red flowers in acidic soil and blue flowers in basic soil.