36 public questions tagged with this topic.
Air bladders in brown algae (e.g., Sargassum) provide buoyancy, helping the blades float near the surface for photosynthesis.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Vegetative reproduction in algae occurs by fragmentation, where each fragment develops into a thallus.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Chlorophyceae store food as starch in pyrenoids, though some may also store it as oil droplets.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Sexual reproduction in Rhodophyceae is oogamous, not isogamous, involving non-motile gametes.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Chlorophyceae chloroplasts vary in shape, including discoid, plate-like, reticulate, and cup-shaped.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Only certain marine brown and red algae produce hydrocolloids like algin and carrageen, not all algae.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Chlorella, a unicellular alga rich in proteins, is used as a food supplement, even by space travelers.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Phaeophyceae exhibit sexual reproduction that can be isogamous, anisogamous, or oogamous.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Anisogamous reproduction in algae involves the fusion of two gametes dissimilar in size, as seen in Eudorina.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Gymnosperms - Characteristics and Life Cycle
Laminaria, a marine brown alga, is among the 70 species of algae used as food.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Gymnosperms - Characteristics and Life Cycle
Only certain brown algae (Phaeophyceae) produce algin, not all algae.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Algae - Phaeophyceae and Rhodophyceae
Brown algae (Phaeophyceae) contain chlorophyll a, c, and fucoxanthin but lack chlorophyll b.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Algae - Phaeophyceae and Rhodophyceae
