Q53) Which of the following algae is found in the deepest waters?
Q53) Which of the following algae is found in the deepest waters?
The correct option is A a) Red algae
A) Explanation:
As we travel from surface waters to deeper waters, the quantity of light changes; it decreases with depth. The quality of light also varies with depth. Sunlight contains all of the colours of our visible spectrum (red, orange, yellow, green, blue, and violet). These colours combined together appear white.
Red light has the longest wavelength and, therefore, the least amount of energy in the visible spectrum.
As light wavelength decreases from red to blue light, so does the ability of light to penetrate water. Blue light penetrates best, green light is second, yellow light is third, followed by orange light and red light. Red light is quickly filtered from water as depth increases.
Red algae are able to grow in depth of seas as compared to green algae because of the presence of more quantity of pigment phycoerythrin in red algae growing at depth. Phycoerythrin can absorb blue- green wavelength of visible spectrum of light that can reach the maximum depth of water and help in photosynthesizing those red algae.
a) Red algae
A)
Explanation:
As we travel from surface waters to deeper waters, the quantity of light changes; it decreases with depth. The quality of light also varies with depth. Sunlight contains all of the colours of our visible spectrum (red, orange, yellow, green, blue, and violet). These colours combined together appear white.
Red light has the longest wavelength and, therefore, the least amount of energy in the visible spectrum.
As light wavelength decreases from red to blue light, so does the ability of light to penetrate water. Blue light penetrates best, green light is second, yellow light is third, followed by orange light and red light. Red light is quickly filtered from water as depth increases.
Red algae are able to grow in depth of seas as compared to green algae because of the presence of more quantity of pigment phycoerythrin in red algae growing at depth. Phycoerythrin can absorb blue- green wavelength of visible spectrum of light that can reach the maximum depth of water and help in photosynthesizing those red algae.
