If a plant with green leaves and red flowers is kept in a dark room, what will be the observed colour of leaves and flowers in red light?

Leaves - Dark
Flowers - Red

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Leaves - Dark
Flowers - Dark

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Leaves - Red
Flowers - Dark

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Leaves - Red
Flowers - Red

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Leaves - Dark
Flowers - Red

If a green leaf is viewed under red light it will appear black, because the pigments on the surface of the leaf have the property of reflecting only green light absorbing lights of all other wavelengths falling on it. As red light has only wavelength corresponding to red colour, it is completely absorbed and hence no colour is reflected back and it appears black. Whereas red flower has the property of reflecting only red light and since it is observed in red light, it appears red.

Suggest Corrections

Similar questions

A self-pollinating plant with orange flowers and alternating leaf arrangement produces
Plants with red flowers and alternating leave- 47
Plants with orange flowers and alternating leaves- 103
Plants with yellow flowers and alternating leaves- 51

Suppose the original parent plant is cross-pollinated with a plant that has red flowers and non-alternating leaves. All of the resulting offsprings have non-alternating leaves. Which of the following is/are true?

Q. A self-pollinating plant with orange flowers and alternating leaf arrangement produces
Plants with red flowers and alternating leave- 47
Pants with orange flowers and alternating leaves- 103
Plants with yellow flowers and alternating leaves- 51
The allele for yellow flower colour is

Q. A self-pollinating plant with orange flowers and alternating leaf arrangement produces
Plants with red flowers and alternating leave- 47
Plants with orange flowers and alternating leaves- 103
Plants with yellow flowers and alternating leaves- 51
If a yellow-flowered offspring were self-pollinated, what would the resulting plant's flowers look like?

Q. Assertion :The colour of the green flower seen through red glass appears to be dark. Reason: Red glass transmits only the red light.

Join BYJU'S Learning Program