What is the total mass of organisms at a trophic level?
Biomass
Biomass is the total mass of organisms at a trophic level.
Which level trophic level has the most mass?
In general, the higher the trophic level (increasingly apex predators), the lower the biomass. Therefore, the lowest trophic level has the greatest biomass, and those are the producers.
How much organic matter is present in an organism in each trophic level?
Biomass and energy transfer As a rule of thumb, only about 10% of the energy that’s stored as biomass in one trophic level (per unit time) ends up stored as biomass in the next trophic level (per the same unit time).
Which of the following is measured as the mass of living organisms a number in a unit area?
standing crop
The standing crop is measured as the mass of living organisms (biomass) or the number in a unit area.
What is the total number of trophic levels in the longest food chain?
All food chains and webs have at least two or three trophic levels. Generally, there are a maximum of four trophic levels.
What is trophic level in an ecosystem?
In ecology, the trophic level is the position that an organism occupies in a food chain – what it eats, and what eats it. Next are herbivores (primary consumers) that eat the grass, such as the rabbit. Next are carnivores (secondary consumers) that eat the rabbit, such as a bobcat.
Is the total weight of dry matter present in the ecosystem at any one time?
The amount of living matter present in the ecosystem at a given time is called. The biomass is expressed in terms of dry matter and wet matter. Complete answer: When an organism is dead it is converted into biomass or debris that serves as a source of energy for saprotrophs also called decomposers.
What is the mass of living matter?
Explanation: Standing crop is the total amount of living matter in a specified population at a particular time, expressed as biomass (standing biomass) or its equivalent in terms of energy.
Which is the second trophic level in a lake?
Zooplankton are primary consumers in aquatic food chains that feed upon phytoplankton. Therefore, they are present at the second trophic level in a lake.