Question

what are Rhodophyceae ???​

Answer 1

These algae has chlorophyll a and d and phycoerythrin are present. It imparts red colour. And are also called ‘red algae’.

Answer 2

ANSWER :-

• Rhodophyceae or Red algae are the most showy kind of seaweeds and are predominantly marine.
• Their colour is red because of the prsesence of a red pigment r-phycoerythrin.
• They also have a blue pigment (r-phycocyanin) in the chromatophores.
• These pigments can utilize wavelengths of light that are not absorbed by chlorophyll.
• The above mentioned pigments enable red algae to grow at greater depth than other plants, as much as upto 300 ft below water.
• Chlorophyll-a, chlorophyll-d, carotenes and xanthophylls are present in rhodophyceae.
• Further, the colour of red algae can change with the depth of the sea and this phenomenon is known as Gaudikov's effect.