NEET2026BiologyChapterActual
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R) : Assertion (A) : The plant body of brown algae is usually attached to the substratum by a holdfast, and has a stalk called stipe and a leaf-like photosynthetic organ called frond. Reason (R) : The vegetative cells of brown algae have a cellulosic wall usually covered on the outside by a gelatinous coating of algi
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A)
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A)
- C(A) is correct but (R) is not correct
- D(A) is not correct but (R) is correct
Correct answer
B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
Step-by-step solution
Assertion (A) is a correct statement. In brown algae (Phaeophyceae), the plant body is differentiated into a holdfast for attachment, a stalk-like stipe, and a leaf-like photosynthetic organ called the frond. Reason (R) is also a correct statement. The vegetative cells of brown algae possess a cellulosic cell wall that is typically covered on the outside by a gelatinous coating of algin, a hydrocolloid. However, the cell wall composition (Reason) does not explain the morphological differentiation of the macroscopic