To review:
The given blank space in the statement, “photosynthetic organisms make up the first trophic level. Organisms in higher trophic levels are collectively called ____________ or ___________. Photosynthetic organisms are consumed by organism collectively called __________ or ____________. Animals that feed on other animals are called ________ or_______. Organisms that feed on wastes and dead bodies are called _______ and ______.”
Introduction:
In an ecosystem, feeding habits of the prey and predators are studied as per their trophic level. Each community occupies a specific trophic level. In almost all the ecosystems, the photosynthetic organisms occupy the first trophic level, except in the detritus food chain.
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Biology: Life on Earth (11th Edition)
- The average efficiency of energy transfer between trophic levels is 10%. Use this efficiency to determine how much phytoplankton mass is required to add just 1 gram (0.04 ounce) of new mass to a killer whale, which is a third-level or top carnivore. Create a diagram that summarizes the different trophic levels and the relative size and abundance of organisms at each level. How would your answer change if the efficiency were half the average rate? Twice the average rate?arrow_forwardWhich trophic level in an aquatic ecosystem would contain the greatest amount of usable energy? Primary consumers located 150 meters below sea level. Primary producers located 80 meters below sea level. Primary producers located 45 meters below sea level. Primary consumers located 40 meters below sea level.arrow_forwardThe number of trophic levels in an ecosystyem are limited.Comment.arrow_forward
- How much energy is passed from one trophic level to the next? Explain why.arrow_forwardOrganisms at the first trophic level ________. a. capture energy from a nonliving source b. are eaten by organisms at lower trophic levels c. are shown at the top of an energy pyramid d. are consumersarrow_forwardStudents from Westbury High School participated in a study of the Willow Waterhole Pond. After safely taking samples of some small fish, a fish-eating hawk, some pond water, some zooplankton, and a fish that preys on the small fish, they determined the average concentration of compound "Z" in each sample. The table below summarizes their data. Build a food chain that illustrates the correct trophic order in the pond. Include the concentrations of compound "Z" for each part of the chain. Describe one natural process that would cause compound "Z" to contaminate the pond's water. (Please write in complete sentences.)arrow_forward
- The mass of living material at a trophic level at a particular time is called as what?arrow_forwardA Food Web om Eage Pythan Wolf Rat Dragonfly Thrush Frog Butterfly Fruit Fly Grasshopper Mangoes Corn A Flowering Plant Lavenders Look at the food web above to answer the following questions. 1. Which organisms are the producers in this food web? 2. Which organism is an example of a primary consumer? 3. Which organism is an example of a tertiary consumer?arrow_forwardplease help 3rd partarrow_forward
- Hypothetical balanced food chain. Sun and Earth supply 6 units of energy to each plant. For higher tropic levels, individuals consume 2 units of energy each before passing the remainder to the next trophic level. The number of individuals in each trophic level is given below. Complete the table below by computing for the number of energy units in each column. Trophic Levels No. Individuals in Each Trophic Level No. of Units Received from Trophic Level Above No. Units Used / Individual (Resp) No. Units Used in Trophic Level No. Units Remaining & Passed on to Next Trophic Level Mean No. Units Available per Individual in Trophic Level SUN +E = 6 1) Plants 30 180 2 2) Grasshopper 19 2 3) Frog 12 2 4) Snake 8 2 5) Owl 4 2arrow_forwardDescribe feeding relationships and energy flow, and use them to identify trophic levels and navigate food websarrow_forwardPlease help me with this question at the earliest need to submit the answerarrow_forward