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

The primary producers of the deep-sea hydrothermal vent ecosystem are:
1. green algae
2. chemosynthetic bacteria
3. blue-green algae
4. coral reefs

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

In which of the following, do both pairs have the correct combination?

In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:

1. net primary productivity

2. gross primary productivity

3. secondary productivity

4. net productivity

Most animals are tree dwellers in a:

Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks. 

If 20 J of energy is trapped at the producer level, then how much energy will be available to peacocks as food in the following chain? 
Plant → mice → snake → peacock

Pheretima and its close relatives derive nourishment from:

1. Sugarcane roots

2. Decaying fallen leaves and soil organic matter

3. Soil insects

4. Small pieces of fresh fallen leaves of maize