WorksheetsB12C
Total questions: 12
Worksheet time: 24mins
B12C The table lists some organisms found in a swamp ecosystem and their sources of energy When constructing an energy pyramid of the swamp ecosystem, which of these would be placed at the top of the pyramid?
Grass carp
American alligator
Eastern mud turtle
Great blue heron
B12C A partial meadow food web is shown. Based on this food web, which organisms are direct sources of energy for secondary consumers?
Aphid
Bird
Rabbit
Ladybug
Fox
Dragonfily
Frog
Butterfly
Bernes
Mouse
Snake
Hawk
The energy pyramid below shows the energy made available by producers. Based on the energy flow between trophic levels in an energy pyramid, how much energy
would be expected to be found at the secondary consumer level in this pyramid?
100 joules
500 joules
1,000 joules
50 joules
B12C The diagram shows a partial East Texas food wet.
Which table correctly classifies these organisms?
B12C The amount of energy the producers in this energy pyramid provide the primary consumers is 54,000 joules. From this amount, 540 joules are provided to the tertiary consumers Based on this model, how much of the energy was provided to secondary consumers?
53,460 J
5,400 J
540 J
54 J
B12C Part of a hydrothermal vent food web is represented in the diagram. Which organisms are both secondary and tertiary consumers in this food web?
Chemosynthetic bacteria and amphipods
Zooplankton and mussels
Ratfish and octopuses
Galatheid crabs and zoarcid fish
B12C The food web shows the flow of energy through a sagebrush-steppe ecosystem. Which of these organisms are in a trophic level that receives a larger percentage of the energy captured by the producers than the percentage received at the bats' trophic level?
Mountain lions
Snakes
Hawks
Ground squirrels
B12C A student is asked to draw a food web in which the same organism is a primary consumer as well as a secondary consumer. How should the organism be represented in the food web?
The organism must have an arrow pointing from it to a tertiary consumer and another arrow pointing from it to a decomposer.
The organism must have an arrow pointing from it to a secondary consumer and another arrow pointing to it from the top predator.
The organism must have an arrow pointing to it from a producer and another arrow pointing to it from a primary consumer
The organism must have an arrow pointing from it to a primary consumer and another arrow pointing away from it to a decomposer.
B12C A marine ecosystem is represented below What is lost to the environment at each of the trophic levels of this ecosystem?
Nutrients from the soil
Living space for the organisms
Food sources
Heat
B12C A terrestrial food web is shown below. Which of the following lists only organisms that are secondary consumers in this food web?
Mice, rabbits, herbivorous insects, and
squirrels
Predaceous insects, toads, spiders, and
foxes
Spiders, foxes, owls, hawks, and snakes
Insectivorous birds, seed-eating birds,
owls, and hawks
B12C Which of the following are missing from the food web shown?
Producers
Decomposers
Omnivores
Predators
B12C The Texas blind salamander (Eurycea rathbuni) lives in the Edwards Aquifer region around San Marcos. Along with other species the salamander lives in total darkness in the
underground crevices and caves of the aquifer region . The table lists some of the organisms that live in this environment and their food sources . In an energy pyramid for these aquifer cave dwellers, which of the following would be placed at the bottom?
Snails
Blind shrimp
Protozoa
Texas blind salamanders
