Invasive Species
Biology ⇒ Ecology and Environment
Invasive Species starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Invasive Species.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A lake has recently been invaded by a non-native plant species that forms dense mats on the water surface, blocking sunlight. What is one likely consequence for native aquatic plants?
A river ecosystem is invaded by a non-native fish species that preys on native fish. What is one possible long-term effect on the native fish population?
Describe one challenge in using biological control to manage invasive species.
Describe one economic impact that invasive species can have on human society.
Describe one way in which climate change may influence the spread of invasive species.
Describe the role of humans in the spread of invasive species.
A lake has recently been invaded by a non-native plant species that forms dense mats on the water surface, blocking sunlight. What is one likely consequence for native aquatic plants?
A river ecosystem is invaded by a non-native fish species that preys on native fish. What is one possible long-term effect on the native fish population?
Which of the following is a common pathway for the introduction of invasive aquatic species? (1) Wind dispersal (2) Ballast water discharge (3) Animal migration (4) Seed dispersal by birds
Which of the following is a direct effect of invasive species on native fauna? (1) Increased pollination (2) Predation (3) Soil enrichment (4) Water purification
Which of the following is a possible consequence of invasive species on ecosystem services? (1) Enhanced water filtration (2) Reduced crop yields (3) Increased pollinator diversity (4) Improved soil fertility
Which of the following is a potential ecological impact of invasive species? (1) Increased biodiversity (2) Displacement of native species (3) Improved ecosystem stability (4) Decreased competition
Fill in the blank: Invasive species often lack natural __________ in their new environments, allowing their populations to grow rapidly.
Fill in the blank: The __________ effect occurs when invasive species alter the physical structure of habitats, affecting other organisms.
Fill in the blank: The __________ hypothesis suggests that ecosystems with high biodiversity are more resistant to invasions.
Fill in the blank: The __________ of an invasive species refers to the range of environmental conditions it can tolerate.
True or False: All non-native species are considered invasive.
True or False: Invasive species can affect human health.
True or False: Invasive species can alter nutrient cycling in ecosystems.
True or False: Invasive species can cause the extinction of native species.
