Indicator Species
Biology ⇒ Ecology and Environment
Indicator Species starts at 9 and continues till grade 12.
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See sample questions for grade 11
A river is being monitored for pollution. Scientists notice a sharp decline in the population of mayflies but an increase in pollution-tolerant worms. What does this suggest about the river's water quality?
A scientist observes a decline in lichen diversity in a city over ten years. What might this indicate about the city's air quality?
A wetland restoration project is being evaluated. Scientists observe an increase in frog populations. What does this suggest about the wetland's health?
Describe how lichens can be used to monitor air quality in urban areas.
Describe one limitation of using indicator species for environmental monitoring.
A river is being monitored for pollution. Scientists notice a sharp decline in the population of mayflies but an increase in pollution-tolerant worms. What does this suggest about the river's water quality?
A scientist observes a decline in lichen diversity in a city over ten years. What might this indicate about the city's air quality?
A wetland restoration project is being evaluated. Scientists observe an increase in frog populations. What does this suggest about the wetland's health?
Which of the following best describes the role of indicator species in an ecosystem? (1) They are always the most abundant species. (2) They reflect the health of the environment. (3) They are always predators. (4) They are always invasive.
Which of the following is a benefit of using indicator species in environmental monitoring? (1) They provide early warning signs of ecosystem change. (2) They are always easy to study. (3) They are unaffected by human activity. (4) They are always rare.
Which of the following is a characteristic of a good indicator species? (1) High sensitivity to environmental changes (2) Rarely found in the ecosystem (3) Difficult to identify (4) Unaffected by pollution
Which of the following is a limitation of using indicator species? (1) They always provide specific information about pollutants. (2) Their response may be influenced by multiple factors. (3) They are always easy to identify. (4) They are unaffected by climate change.
Fill in the blank: ________ are often used as indicator species for monitoring the health of coral reefs.
Fill in the blank: ________ are often used as indicator species for monitoring the health of grassland ecosystems.
Fill in the blank: ________ are often used as indicator species for monitoring the health of marine ecosystems.
Fill in the blank: ________ are often used as indicator species for monitoring the health of wetlands.
True or False: All species in an ecosystem can serve as indicator species.
True or False: Indicator species are always the first to disappear when an ecosystem is disturbed.
True or False: Indicator species can be used to assess the success of habitat restoration projects.
True or False: Indicator species can be used to monitor both terrestrial and aquatic ecosystems.
