Which of the following statements about Rhodophyceae is correct?
Certain red algae (Rhodophyceae) produce hydrocolloids like carrageen, used commercially.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Algae - Phaeophyceae and Rhodophyceae
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Which of the following is a characteristic of chrysophytes?
Chrysophytes include diatoms and golden algae (desmids). Most are photosynthetic, microscopic and occur as plankton in fresh water and marine environments.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Protista - Chrysophytes and Dinoflagellates
