Practice questions comparing different plant groups within the plant kingdom and exploring their economic significance in agriculture, medicine, and industry.
The red pigment in Rhodophyceae is r-phycoerythrin, not chlorophyll d; they also contain chlorophyll a and d.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Phaeophyceae are primarily marine algae, with rare occurrences in freshwater, not primarily freshwater.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Vegetative reproduction in Chlorophyceae can occur by fragmentation or spore formation.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Red algae store food in the form of floridean starch, which is similar to glycogen in structure.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
The red pigment in Rhodophyceae is r-phycoerythrin, not fucoxanthin, which is found in Phaeophyceae.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Rhodophyceae lack flagella; their spores are non-motile, unlike Chlorophyceae.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Cytotaxonomy is based on the study of cytological characters such as chromosome number, structure, and behavior.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
Porphyra, a member of Rhodophyceae, is one of the marine algae used as food.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
The pollen chamber is a cavity within the ovule of gymnosperms where pollen grains collect before fertilization.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
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
In oogamous reproduction, a large, non-motile egg fuses with a small, motile sperm, as seen in Volvox and Fucus.
Ref: NCERT Class 11 Biology Chapter 3: Plant Kingdom Plant Kingdom - Comparative Studies and Economic Importance
