The primary producers of the deep-sea hydrothermal vent ecosystem are:
1. | green algae | 2. | chemosynthetic bacteria |
3. | blue-green algae | 4. | coral reefs |
Which ecosystem has the maximum biomass?
1. Grassland ecosystem
2. Pond ecosystem
3. Lake ecosystem
4. Forest ecosystem
Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in:
1. Tropical Rain Forest
2. Grassland
3. Temperate Forest
4. Tropical Savannah
1. | A.G. Tansley | 2. | E. Haeckel |
3. | E. warming | 4. | E.P. Odum |
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. Pyramid of energy
3. Upright pyramid of numbers
4. Upright pyramid of biomass