Question

Which ones are primarily absorbed by carotenoids?
A. Blue and green
B. Green and red
C. Red and violet
D. Violet and blue

Answer 1

Hint: Plants, as well as certain fungi and algae, contain carotenoids, which are organic colours. Carotenoids are the pigments that give carrots, egg yolk, maize, and daffodils their bright yellow-orange hue. Unsaturated hydrocarbons having the general formula ${C_{40}}{H_{56}}$ are known as Carotenoids. Carotenoids are important accessory pigments required for photosynthesis as they remove reactive oxygen species from plant cells which can damage photosystems.

Complete answer:
Option: A – Carotenoids absorb blue and green light and display yellow and red complementary color.
Thus, Option A is the correct answer.
Option: B - Carotenoids do not absorb green and red lights.
Thus, Option B is not correct.
Option: C – Carotenoids do not absorb red and violet lights.
So, Option C is also not correct.
Option: D – Carotenoids do not absorb violet and blue lights as well.
Thus, Option D is also not correct.
Carotenoids are a broad category of yellow-orange pigments made up of eight isoprenoid units linked together to create a conjugated double bond system in the molecule. The hue of each carotenoid is determined by its conjugated polyene structure.

Therefore, option A. Blue and green is the correct answer

Note:
Plants contain a variety of pigments, which are responsible for the varied colours we perceive. Flowers and fruits have a lot of organic compounds that absorb light; therefore, they have a lot of them. Pigments can also be found in the leaves, stems, and roots. Anthocyanins, flavonoids, flavines, quinones, and cytochromes are examples of pigment compounds. Each pigment's structure generally involves conjugation, which aids in the absorption of light.