Home › CBSE Class 11 (Science) › Biology › Plant Growth and Development › Darwin's coleoptile experiments with canary gras…
Darwin's coleoptile experiments with canary grass concerned which response?
AThigmotropism
BPhototropism
CHydrotropism
DGravitropism
Answer & Solution
Correct answer: B. Phototropism
Coleoptiles bent toward unilateral light, showing phototropism and leading to the idea of a transmittable influence.
Related questions
In most situations ABA acts as an antagonist to which PGR?Which PGR stimulates closure of stomata?Why is abscisic acid called the stress hormone?Which PGR keeps deep water rice leaves above water by rapid internode growth?Which compound is most widely used as a source of ethylene?Which PGR is made in large amounts by ripening fruits and senescing tissues?Which PGR helps delay leaf senescence by promoting nutrient mobilisation?Kinetin was discovered from which source?