Which of the following algae produce Carrageen?

Male and female gametophytes do not have an independent free-living existence in:

Phycoerythrin is the major pigment in

Which of the following statements is incorrect about gymnosperms?

Read the following statements and choose the set of correct statements : In the membrane of Phaeophycean.
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 option given below.

An example of colonial alga is

Isogamous condition with non-flagallated gametes is found in :

Monoecious plant of Chara shows occurrence of:

Select the mismatch:

Besides paddy fields, cyanobacteria are also found inside vegetative part of :

Select the wrong statement :