Question

Read the following statements and choose the set of correct statements:
In the members of Phaeophyceae,
A. Asexual reproduction occurs usually by biflagellate zoospores.
B. Sexual reproduction is by oogamous method only.
C. Stored food is in the form of carbohydrates which is either mannitol or laminarin.
D. The major pigments found are chlorophyll a, c and carotenoids and xanthophyll.
E. Vegetative cells have a cellulosic wall, usually covered on the outside by gelatinous coating of algin.
Choose the correct answer from the options given below:

• A. A, B, C and D only
• B. B, C, D and E only
• C. A, C, D and E only
• D. A, B, C and E only

Answer 1

The Correct Option is C

Let us analyze the given statements regarding Phaeophyceae (brown algae):

A. Asexual reproduction: It generally occurs through biflagellate zoospores, which is correct.

B. Sexual reproduction: It is not restricted to oogamy; it can also involve isogamy or anisogamy. Hence, this statement is false.

C. Stored food: It is present in the form of carbohydrates like mannitol or laminarin, which is true.

D. Major pigments: Phaeophyceae contains chlorophyll a, chlorophyll c, carotenoids, and xanthophyll, which is correct.

E. Vegetative cell wall: It is composed of cellulose and is often covered by a gelatinous coating of algin, making this statement true.

Thus, the correct answer is (3) A, C, D and E only.