NEET BIOLOGY

Detailed explanation-1: -A pigment is any substance that absorbs light. The color of the pigment comes from the wavelengths of light that are reflected, or in other words, those wavelengths not absorbed. Chlorophyll, the green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects.

Detailed explanation-2: -Hint: Pigments are usually those substances that provide colour to the cells and tissues in an organism. Moreover, the green color of the plants is due to chlorophyll and the red color of the blood is due to haemoglobin, both of which are pigments.

Detailed explanation-3: -A pigment is a natural colouring matter found in plant or animal cells or tissues. It is capable of changing the colour of reflected or transmitted light and it does so via wavelength-selective absorption. For example, the presence of a pigment chlorophyll imparts a green colour to the leaves of plants.

Detailed explanation-4: -Pigments are chemical compounds which reflect only certain wavelengths of visible light. This makes them appear “colorful". Flowers, corals, and even animal skin contain pigments which give them their colors. More important than their reflection of light is the ability of pigments to absorb certain wavelengths.

Detailed explanation-5: -Chlorophyll a absorbs violet and orange light the most. Chlorophyll b absorbs mostly blue and yellow light. They both also absorb light of other wavelengths with less intensity.