Quiz on Keystone

What is a "keystone?"

• The central stone at the summit of an arch

• A type of gemstone

• A cornerstone of a building

• A type of key used in ancient locks

What is a "keystone?"

• The central stone at the summit of an arch

• A type of building material

• A decorative stone used in flooring

• A stone used to mark boundaries

What is a keystone species?

• A species that is the largest in an ecosystem.

• A species that is the most colorful in an ecosystem.

• A species on which other species in an ecosystem largely depend.

• A species that is the fastest in an ecosystem.

What is the role of the sea otter in the ecosystem?

• Predator of sea urchins

• Producer of kelp

• Prey for sea urchins

• Pollinator of kelp

What happens to the kelp forest when sea otters are absent?

• Kelp thrives

• Kelp is overgrazed

• Kelp grows faster

• Kelp becomes a keystone species

What is the term used to describe the sea otter in the ecosystem?

• Primary consumer

• Keystone species

• Apex predator

• Invasive species

What is the relationship between bees and plants called?

• Parasitism

• Mutualism

• Commensalism

• Predation

Why are fruits important to other species?

• They provide shade

• They are a food source

• They are used for shelter

• They are decorative

Who is thought to have predicted the impact of bees disappearing on human survival?

• Isaac Newton

• Albert Einstein

• Charles Darwin

• Nikola Tesla

What is an example of a keystone species mentioned in the text?

• Oak Tree

• Pine Tree

• Fig Tree

• Maple Tree