Which of the following are the types of chlorophyll?

🌱 Chlorophyll is a pigment present in all green plants and a few other organisms.
→ It is required for photosynthesis, which is the process by which light energy is converted into chemical energy.
→ The chlorophyll pigment is responsible for the green colouration in plants.
→ Besides plants, chlorophyll is found in all photosynthetic organisms such as cyanobacteria.
→ Chlorophyll exists in several forms but chlorophyll a and chlorophyll b are the most common.
→ There are about five closely related chlorophylls:
➔ Chlorophyll a
➔ Chlorophyll b
➔ Chlorophyll c
➔ Chlorophyll d
➔ Chlorophyll e
➔ Chlorophyll f
→ All of them reflect green light.
→ However, there are slight differences. For instance, they differ slightly in their structure causing them to appear in different shades of green.
→ Chlorophyll a, in particular, is a blue-green pigment whereas chlorophyll b is a yellow-green pigment.

🧪 Explanation:
→ Chlorophyll a
→ The main light-harvesting pigment present in all photosynthetic organisms.
→ Molecular formula: C55H72O5N4Mg
→ Found in higher plants, red algae, green algae.

→ Chlorophyll b
→ Functions as a light-harvesting pigment that passes light excitation to chlorophyll a.
→ Molecular formula: C55H70O6N4Mg
→ Found in higher plants, green algae.

→ Chlorophyll c
→ An accessory pigment found in certain marine algae.
→ Molecular formula: C35H28O5N4Mg
→ Found in diatoms, dinoflagellates, brown algae.

→ Chlorophyll d
→ Present in photosynthetic organisms thriving in moderately deep water.
→ Molecular formula: C54H70O6N4Mg
→ Found in red algae, cyanobacteria (blue-green algae).

→ Chlorophyll e
→ A rare type of accessory pigment, found in some golden algae.
→ No sufficient information on its chemical structure and molecular formula.
→ Found in Tribonema bombycinum and Vaucheria hamata.

→ Chlorophyll f
→ Found in aquatic organisms, enabling absorption of near-infrared light.
→ Molecular formula: C55H70O6N4Mg
→ Found in cyanobacteria.