A. Diatoms
B. Najas
C. Zanichellia
D. Lemna
Related Mcqs:
- Hydrosphere starts from:
A. Water factor
B. Sand
C. Mud
D. Desert - The woodland stage in a hydrosphere has predominance of plants like:
A. Eleocharis, Fimbristylis
B. Salix, Populus
C. Ranunculus, Polygonum
D. Acer, Ulmus - In a hydrosphere the plants like Carex, Cyperus, and Juncus appear just after a community comprising:
A. Lemna, Wolffia, Spirodela
B. Nuphar, Nelumbo, Victoria
C. Scirpus, Typha, Sagittaria
D. Najas, Ceratophyllum, Elodea - Mark the climatic cause for the initiation of succession:
A. Erosion
B. Drought
C. Deposition
D. Micro-organisms - Mark the correct sequence of events occurring during ecological succession:
A. Nudation – ecesis – aggregation – migration
B. Migartion – ecesis – aggregation – nudation
C. Nudation – migration – ecesis – aggregation
D. Nudation – ecesis – migration – aggregation - Mark the correct statement with reference to phosphorous cycle:
A. Inorganic phosphates are lost by leaching
B. Ocean phosphates are lost by sedimentation
C. Soluble phosphates are lost by erosion
D. Soil has plenty of dissolved phosphates - Mark the rooted submerged hydrophyte:
A. Potamogeton
B. Najas
C. Ranunculus
D. None of these - Mark the helophyte:
A. Suaeda fruticosa
B. Cressa cretica
C. Salsola foetide
D. All of these - Mark the correct relationship:
A. Holard – Chesard = Ecard
B. Chesard – Ecard = Holard
C. Holard + Ecard = Chesard
D. Ecard – Chesard = Holard - Mark the draught evader:
A. Kangaroo rat
B. Camel
C. Desert rat
D. All of these
The correct answer to the question: "Mark the pioneer in a hydrosphere:" is "Diatoms ".
