Water Pollution Quiz PDF: Questions and Answers - 91

MCQ 451: 'Nitrogen' is an essential constituents of

1. Amino Acid
2. Protein
3. Phosphorous
4. Calcium

MCQ 452: Grasses, non flowering plants, shrubs and trees are examples of

1. Climax Community
2. Perennial Plants
3. Secondary Succession
4. Primary Succession

MCQ 453: The chemical energy that is stored in the primary producers is in the form of

1. Organic molecules
2. Inorganic compounds
3. Green plants and Algae
4. Omnivores

MCQ 454: The second trophic level in the oceans includes

1. Plants
2. Planktons
3. Zooplanktons
4. Carnivores

MCQ 455: Waste products are enriched with

1. Calcium
2. Protein
3. Phosphorous
4. Fats