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WorksheetsEcosystem
Total questions: 10
Worksheet time: 5mins
1.Why are predators important in an ecosystem? They_________________.
bring back the nutrients present in the soil
keep the population of other species in check
supply the ecosystem with the needed energy
utilize energy and nutrients for the direct benefit of decomposers
2.The following terms have something to do with the base of a pyramid. Which term should be removed?
chemosynthesis
corn
earthworm
photosynthesis
3.The following processes are sources of carbon dioxide in the atmosphere, EXCEPT _______________.
respiration
photosynthesis
burning of fossil fuels
decomposition of wastes
4.The following materials can be recycled in the biosphere, EXCEPT ________________.
oxygen
nitrogen
sunlight
water
5.Which of the following abiotic factors supports a tropical area with plenty of plants that thrive in due to the presence of minerals, organic materials and microorganisms?
light
precipitation
soil
weather
As we move upward to the ladder of the energy pyramid, the biomass level
___________.
increases
decreases
has no effect
remains the same
Grasses, shrubs, seedlings, and young trees occupy the ______ trophic level.
First
Second
Third
Fourth
Which is the correct sequence according to availability of energy in
food in descending order?
bird , hawk , corn plant , snake
corn plant , bird , snake , hawk
decomposers , corn plant , bird , snake
snake , decomposers , bird , corn plant
Which trophic level contains the most energy?
carnivore
herbivore
producer
top carnivore
Some animals such as owls are active during nighttime, so they are called nocturnal organisms while those that are active during daytime are called diurnal organisms. Which of the abiotic factors is involved in the given situation?
wind
light
water
temperature
