WorksheetsBiodiversity 8.12C
Total questions: 16
Worksheet time: 14mins
An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off.
Increased biodiversity results in a more sustainable ecosystem because -
F. A greater number of plant species means that there is less barren land
G. A greater variety of species present allows more organisms to adapt after changes occur
H. The transition area between two ecosystems is narrower.
J. There are fewer species to be affected by environmental stresses
Students in a science class visited four local ecosystems. The students observed the species present in each ecosystem and recorded their observations in the table.
Based on these observations, which ecosystem is likely to be the LEAST sustainable?
A. Ecosystem 1, because it has the fewest species.
B. Ecosystem 2, because it includes both aquatic and terrestrial species.
C. Ecosystem 3, because it has few predators.
D. Ecosystem 4, because it supports many animals.
Tropical rainforests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?
F. The presence of more species with different adaptations makes it more likely that some organisms will survive an ecological disaster.
G. Greater genetic variation within species makes it more likely that some individuals will survive a disease outbreak.
H. The presence of a variety of herbivore species that can feed on a large number of different producer species helps ensure abundant prey for predators in the ecosystem.
J. All of the above.
The food webs below model relationships among the organisms in two ecosystems.
Which ecosystem would be more likely to survive if a disease killed the grasses?
A. The forest ecosystem, because most of the animals can eat other organisms.
B. The grassland ecosystem, because several predators compete for food.
C. The forest ecosystem, because it has three top predators.
D. The grassland ecosystem, because it has many herbivores.
Whish habitat has the highest biodiversity?
Area A
Area B
Area C
Area D
In this food web example you can see that rain forests have many producers consumer and predators. How would you describe the rain forest biome?
It has high biodiversity
It has low biodiversity.
Image "B" shows more biodiversity than image "A". Why?
Because "B" shows more different species than image "A"
Because image "B" has less different species than "A"
"A" has a greater number of same species plants so this statement is wrong.
Both images show the same biodiversity
Which ecosystem below has the HIGHEST biodiversity?
