Phototropism in shoots is attributed to

Bean seeds were planted and put on a sunny windowsill. As the plants grew,their stems bent toward the window. This bending was most likely caused by an

Label the diagram.
$(A)$ This is which part of a dicotyledonous plant?
$(B)$ If we remove part $1$ from the plant,what will happen?

Avena curvature test is a bioassay for examining the activity of

Phototropic and geotropic movements are linked to

If the growing coleoptile tip is cut,what happens to phototropism?