What Is Pyramid of Biomass

Q. Pyramid of energy is always

1. inverted
2. upright
3. U shaped
4. spindle shaped

Q. "The pyramid of biomass is not always upright". Explain the statement. [2 Marks]

Q. 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 numbers
3. Pyramid of energy
4. Upright pyramid of biomass

Q.

Which one of the following is not used for construction of ecological pyramids?

1. Dry weight

2. Rate of energy flow

3. Number of individuals

4. Amount of biomass

Q.

Mass of living matter at a trophic level in an area at any time is called?

1. Detritus

2. Standing crop

3. Humus

4. Standing state

Q.

What type of ecological pyramid would be obtained by the following data?

1. Secondary consumer: 120 g

2. Primary consumer: 60 g

3. Primary producer : 10 g

1. Upright pyramid of numbers

2. Pyramid of energy

3. An inverted pyramid of biomass

4. Upright pyramid of biomass

Q. Which one of the following is not used for construction of ecological pyramids ?

1. Dry weight
2. Rate of energy flow
3. Number of individuals
4. Size of the organisms

Q. What is pyramid of numbers? why does the number of organisms usually decrease at each trophic level?

Q. Given below is an imaginary pyramid of biomass. Which of these organisms, possibly constitute the different trophic levels?

1. PPs are insects and PCs are small insectivorous birds
2. Level PP is made up of phytoplanktons and level PC constitute small fishes
3. Level PP constitute peepal trees and PCs are sheep
4. Level PP is rats and level PC is cats

Q. What do all ecological pyramids depict?

1. Number of organisms at each trophic level
2. Biomass of organisms at each trophic level
3. Energy flow at each trophic level
4. All of these
5. Increase in energy at each trophic level