Which one of the following statements is wrong ?

1. Algin is obtained from red algae, and carrageenan from brown algae.

2. Agar-agar is obtained from *Gelidium* and *Gracilaria*.

3. *Laminaria* and *Sargassum* are used as food.

4. Algae increase the level of dissolved oxygen in the immediate environment.

Doubtly Asked 30 Oct 2026 NEET UG 2016 Phase 2 Practice test neet Save WhatsApp Report

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Answer: 1. Algin is obtained from red algae, and carrageenan from brown algae.

The statement is reversed. Algin comes from brown algae and carrageenan from red algae.

Agar comes from Gelidium and Gracilaria; Laminaria and Sargassum are eaten; algae add oxygen by photosynthesis.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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