Question

Find the wrong statements.
$\left(a\right)$ Ulothrix and Spirogyra are filamentous forms
$\left(b\right)$ Porphyra and Laminaria are fresh water algae
$\left(c\right)$ Stored food is in the form of mannitol in rhodophyceae
$\left(d\right)$ Chlorella and Spirulina are unicellular algae

• A. $a$ and $b$
• B. $b$ and $c$
• C. $a$ and $c$
• D. $a$ and $d$
• E. $b$ and $d$

Answer 1

Answer: (B)

$b$ and $c$

• The majority of the red algae are marine with greater concentrations found in the warmer areas. They occur in both well-lighted regions close to the surface of the water and also at great depths in oceans where relatively little light penetrates. Hence, Porphyra and Laminaria are not freshwater algae.
  
• The stored food is Floridian starch which is very similar to amylopectin and glycogen in structure. Hence, Stored food is not in the form of mannitol in Rhodophyceae. Hence, b and c are wrong statements.
• So, the correct answer is "b and c'.