Which ecosystem has the maximum biomass
1. Forest ecosystem
2. Grassland ecosystem
3. Pond ecosystem
4. Lake ecosystem
Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in
1. Tropical Savannah
2. Tropical Rain Forest
3. Grassland
4. Temperate Forest
Niche is
1. all the biological factors in the organism's environment
2. the functional role played by the organism where it lives
3. the range of temperature that the organism needs to live
4. the physical space where an organism lives
What type of ecological pyramid would be obtained with the following data?
Secondary consumer : 120 g
Primary consumer : 60 g
Primary producer : 10 g
1. Inverted pyramid of biomass
2. Upright pyramid of biomass
3. Upright pyramid of numbers
4. Pyramid of energy
Pneumatophores occur in
1. Halophytes
2. Submerged hydrophytes
3. Carnivorous plants
4. Free-floating hydrophytes
Great Barrier Reef along east coast of Australia is a
1. Population
2. Community
3. Biome
4. Ecosystem
The accompanying figure represents an ecological pyramid. It is
1. | Pyramid of numbers in a grassland |
2. | Pyramid of biomass in a fallow land |
3. | Pyramid of biomass in a lake |
4. | Energy pyramid in a spring |
In primary succession in water, the pioneers are normally:
1. Lichens
2. Mosses
3. Phytoplankton
4. Submerged rooted plants
What is common to Pantoeaagglomerans, Microbacteriumlaevaniformans and Pseudomonas putida?
1. They are phosphate solubilising bacteria
2. They are all denitrifiers
3. They are genetically modified to fix atmospheric nitrogen
4. They are source of antibiotics effective against MRSA
Aquatic ecosystems that are most adversely affected by acid are those that lack:
1. calcium
2. carbonic acid
3. nitrate
4. bicarbonate