What detect and respond to diurnal cycles?
tides stars fens Oak Conifers humans water plants
A B C D E F G H
Diurnal cycles Diurnal cycles are the daily cycles of light and darkness.
Plants detect and respond to diurnal cycles.
What detect and respond to diurnal cycles? (A) tides (B) stars (C) fens (D) Oak (E) Conifers (F) humans (G) water (H) plants