Question

A green plant will turn yellow if placed in the dark. This is called
 A .Phototropism
 B .Dormancy
 C .Chlorosis
 D. Etiolation

Answer 1

Hint: This is particularly valid for plants that are under leaf litter or in the shade of different plants. They may normally develop sufficiently tall to experience the physiological and biochemical changes that happen when the plant has adequate light after a time of lacking light.

Complete answer: Photoperiodism is the marvel where different physiological responses like blossoming reactions to the general length of dull or light periods. Lethargy is a period when development, improvement, and actual movement are briefly halted. Chlorosis is a condition where leaves produce lacking chlorophyll and get yellow. Etiolation is a condition wherein a plant is set in obscurity and thus will turn yellow.

Additional information:
Etiolation in plants is a characteristic marvel and is basically a plant's method of going after a light source. On the off chance that you have ever begun seeds without adequate lighting, at that point you have perceived how the seedlings become fairly spindly with a long anomalous slight, pale stem. This is a case of etiolation in plants. We by and large know it as plant legginess. Etiolation is the consequence of hormones called auxins. Auxins are moved from the effectively developing tip of the plant downwards, bringing about the concealment of horizontal buds. They invigorate proton siphons in the cell divider which, thus, expands the causticity of the divider and triggers expansion, a compound that debilitates the cell divider.

So the correct answer is Etiolation.

Note: Etiolation plant issues such as irregular extending of stems and leaves, debilitated cell dividers, stretched internodes with fewer leaves, and chlorosis may all happen. In some cases, no activity is required and the plant will arrive at the light source unharmed. While etiolation expands the odds that a plant will arrive at light, it brings about not exactly attractive side effects.