Question

Certain flowers will open for twelve hours and then close. Which stimulus do the flowers respond to when they open and then when they close for that time period?

a.light levels

b.moon phases

c.seasonal temperatures

d.carbon dioxide levels

Answer 1

It is A light levels because they grow towards the light and, plant leaves bud and seeds germinate when the temperature is right.

Answer 2

A light levels I did this before