Blue light induces curvature in coleoptile most effectively.
Therefore the correct answer is Option B.
What is the effect of blue light on plants?
- Blue light lies within the wavelength of 400 to 500 nm.
- Blue light has high energy and is useful in plant growth and flowering.
- Blue light controls the opening of stomata thus affecting photosynthesis.
- Plants grown in blue light are usually shorter having smaller, thicker and darker green leaves as compared to plants grown without blue light.
- The reason is unknown but blue light is most effective in inducing coleoptile curvature.
- Coleoptile is the protective sheath that covers the emerging shoot in monocots such as grasses and protects the first leaf.
Learn more about coleoptiles here:
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