NEET Biology Plant Growth And Development Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Question & Answer Discuss:

The following diagram shows four coleoptiles set up (I, II, III & IV) at the start of an experiment.

Fig : Experiment used to demonstrate that tip of the coleoptile is the source of auxin. Arrows indicate direction of light. Which two coleoptiles will both bend towards the light source?

(a) I and IV

(b) I and II

(c) II and III

(d) III and IV