Ecological Pyramid
Trending Questions
Q. Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?
- Level one PP is "pipal trees" and the level SC is "sheep"
- Level PC is "rats" and level SC is "cats"
- Level PC is "insects" and level SC is "small insectivorous birds"
- Level PP is " Phytoplanktons" in sea and "Whale" on top-level TC
Q. The mass of living material at each trophic level is represented by the pyramid of
- number
- biomass
- energy
Q. Choose the drawback(s) of ecological pyramids:
- It is difficult to place omnivores in the ecological pyramid.
- Saprophytes are not taken into consideration.
- They overlook seasonal and diurnal variations.
- It indicates the amount of energy present at each trophic level.
Q. The mass of living material at a trophic level at a particular time is called :
- Standing crop
- Gross primary productivity
- Standing state
- Net primary productivity
Q. Which of the following statement is incorrect regarding ecological pyramids?
- The pyramid of energy is inverted in ocean ecosystem.
- The pyramid of biomass is inverted in aquatic ecosystem.
- The pyramid of numbers is upright in a grassland ecosystem.
- The pyramid of biomass is upright in a grassland ecosystem.
Q. An imaginary pyramid of numbers is given. Which one of these combination of organisms can be placed in this pyramid?
- Level PP is peepal tree and level SC is sheep
- Level PC is hawk and level SC is cats
- Level PP is phytoplankton in sea and topmost level TC is whale
- Level PC is insects and level SC is small insectivorous birds
Q. Fill in the blanks.
A. Always an upright pyramid in all ecosystems ________
B. Chemical(s) transfer from lower to higher trophic levels within a food web ____________
C. Development of genetically modified plants to resist certain pests _______________
A. Always an upright pyramid in all ecosystems ________
B. Chemical(s) transfer from lower to higher trophic levels within a food web ____________
C. Development of genetically modified plants to resist certain pests _______________
Q. Choose the correct statement with reference to an aquatic ecosystem.
- Pyramid of energy is inverted, pyramid of biomass is upright
- Pyramid of biomass is inverted, pyramid of energy is upright
- Both pyramid of energy and biomass are upright
- Both pyramid of energy and biomass are inverted
Q. An imaginary pyramid of numbers is given. What can be one of the possibilities about certain organisms at the different trophic levels?
- Level PP is phytoplankton in sea and top level TC is whale
- Level one PP is peepal tree and level SC is sheep
- Level PC is rats and level SC is cats
- Level PC is insects and level SC is small insectivorous birds
Q. Which one of the following is an artificial ecosystem?
- Pond
- Crop field
- Forest
- Lake
Q. In a comparative study of terrestrial ecosystem and aquatic ecosystem, which of the following may be observed?
- Number of trophic levels is usually more in terrestrial ecosystem than aquatic ecosystem
- Number of trophic levels is usually less in terrestrial ecosystem than aquatic ecosystem
- Both ecosystems always have the same number of trophic levels
- Number of trophic levels are indefinite
Q. Organisms that feed on both plants and animals are called ____.
carnivores
herbivores
parasites
omnivores
Q. ____ represents the functional role of an organism in a food web.
- Ecological pyramid
- Ecological niche
- Energy flow
- Food chain
Q. Which of the following statement about energy pyramid is true?
Ecological pyramids demonstrate a 90% loss in energy at each step up the pyramid.
Ecological pyramids are difficult to disrupt.
Ecological pyramids show that carnivory is more efficient than herbivory.
Ecological pyramids demonstrate a 90% loss in energy at each step up the pyramid. Ecological pyramids depict the total biomass of an ecosystem minus the total energy stored.
Q. Which of the following statement is incorrect regarding ecological pyramids?
- The pyramid of energy is inverted in ocean ecosystem.
- The pyramid of biomass is inverted in aquatic ecosystem.
- The pyramid of numbers is upright in a grassland ecosystem.
- The pyramid of biomass is upright in a grassland ecosystem.
Q. A pyramid of numbers is always upright.
- True
- False
