Question

Phototropic and geotropic movements are linked
to
(a) gibberellins (b) enzymes
(c) auxin (d) cytokinins

Answer 1

Phototropic and geotropic movements are linked to Auxin.

Answer 2

Plant Hormone

Explanation:

    (c) Phototropic and geotropic movements are linked to Auxin.

1. Phototropic and geotropic developments are identified with differential hormone activity.
2. Shoot develops emphatically phototropic and adversely geotropic. Though roots develop adversely phototropic and emphatically geotropic.
3. Auxin is the phytohormone which initiates apical strength and phototropic developments.  
4. It is a plant hormone which is found in the plant  stem tip that advances cell of the plant stem tip toward the light.it process is known as phototropism.
5. The fundamental capacity of auxin is to help plants develop.
6. Auxin invigorates plant cells to prolong, and the apical meristem of a plant is one of the fundamental places that auxin is delivered.