Understanding Symbiosis

The video introduces the concept of symbiosis, a relationship where two different species live closely together. It explains the three types of symbiosis: mutualism, where both species benefit; commensalism, where one benefits without affecting the other; and parasitism, where one benefits at the expense of the other. Examples include bees and flowers for mutualism, remoras and sharks for commensalism, and fleas on dogs for parasitism. The video concludes with a real-life example of symbiosis between humans and dogs.

What is the origin of the word 'symbiosis'?

• Spanish, meaning 'friendship'

• French, meaning 'cooperation'

• Greek, meaning 'living together'

• Latin, meaning 'togetherness'

In mutualism, how do both species benefit?

• One species benefits while the other is harmed

• Both species benefit equally from the relationship

• One species benefits while the other is unaffected

• Neither species benefits

Which of the following is an example of mutualism?

• A remora fish attached to a shark

• A flea on a dog

• A bee pollinating a flower

• A bird eating insects off a buffalo

What characterizes commensalism?

• One species benefits, the other is unaffected

• One species benefits, the other is harmed

• Both species benefit

• Both species are harmed

Which of the following is an example of commensalism?

• A virus infecting a human

• A bird building a nest in a tree

• A remora fish eating leftovers from a shark

• A bee pollinating a flower

What is the main characteristic of parasitism?

• One species benefits, the other is unaffected

• Neither species benefits

• One species benefits at the expense of the other

• Both species benefit

Which of the following is an example of parasitism?

• A bee pollinating a flower

• A remora fish attached to a shark

• A bird eating insects off a buffalo

• A flea on a dog

What is the term for the species that is harmed in parasitism?

• Host

• Benefactor

• Parasite

• Symbiont

How do humans and dogs exhibit a symbiotic relationship?

• Humans and dogs have no interaction

• Dogs provide food, and humans offer protection

• Humans provide food, and dogs offer protection

• Humans and dogs compete for resources

Which type of symbiosis is considered harmful to one of the species involved?

• Mutualism

• Commensalism

• Parasitism

• None of the above