Unit 1-Biodiversity Flashcards
(20 cards)
What is biodiversity?
Biodiversity refers to the variety of life in a particular habitat or ecosystem.
True or False: Biodiversity only includes the variety of species.
False
Fill in the blank: The three levels of biodiversity are genetic diversity, species diversity, and ____ diversity.
ecosystem
What is genetic diversity?
Genetic diversity is the variation in genetic makeup among individuals within a species.
Which of the following is a benefit of biodiversity? A) Increased stability of ecosystems B) Decreased resilience to environmental changes C) Reduced agricultural productivity
A) Increased stability of ecosystems
What is an ecosystem?
An ecosystem is a community of living organisms and their physical environment interacting as a system.
True or False: Invasive species can negatively impact biodiversity.
True
What does the term ‘endangered species’ mean?
An endangered species is a species that is at risk of extinction due to a decline in population or habitat.
Fill in the blank: Conservation efforts aim to protect biodiversity by preserving ____ and natural habitats.
species
What is the role of keystone species in an ecosystem?
Keystone species play a critical role in maintaining the structure of an ecosystem.
True or False: Biodiversity can help prevent disease outbreaks.
True
What is habitat destruction?
Habitat destruction is the process by which natural habitat becomes incapable of supporting its native species.
Which of the following is a threat to biodiversity? A) Climate change B) Habitat fragmentation C) Pollution D) All of the above
D) All of the above
What is the significance of biodiversity hotspots?
Biodiversity hotspots are regions that are both rich in species and threatened by human activities.
Fill in the blank: The practice of planting trees to restore ecosystems is known as _____.
reforestation
What does the term ‘ecosystem services’ refer to?
Ecosystem services are the benefits that humans obtain from ecosystems, such as clean water and pollination.
True or False: Biodiversity contributes to cultural and recreational benefits.
True
What is the impact of climate change on biodiversity?
Climate change can alter habitats and threaten species survival, leading to loss of biodiversity.
What is the importance of pollinators in biodiversity?
Pollinators are crucial for the reproduction of many plants, which supports ecosystem diversity.
Fill in the blank: The extinction of a species can lead to a cascade of changes in an ecosystem, known as _____.
trophic cascade
