Question

Among the red, green and brown algae that inhabit the sea, which is likely to be found in the deepest water

Answer 1

Answer:

$\boxed{Red \: algae}$

Explanation:

Vertical distribution of  red, green and brown algae in sea water:

• The vertical distribution of red, green and brown algae is limited impart by the availability of sunlight and therefore  vary by depth.
• The vertical distribution of red, brown and green algae can be explained by their accessory  photosynthetic pigments, the presence of which given the seaweeds their characteristic colours, a concept known  as chromatic adaptation.
• Because green light penetrates deepest in coastal waters and the accessary pigments  of red algae absorb mostly blue-green wavelength, hence red algae extend to the greatest depth of primary  producers.
• Green algae, which have pigments absorbing mostly blue and red wavelengths that are diminished  rapidly in sea water, found at shallowest depths.
• Because accessory pigments of brown algae absorb intermediate  wavelengths of light, brown algae would be expected to be most abundant at intermediate depths.