Evolution

Which of the following best describes the relationship that exists when a tick attaches itself to a dog and feeds on the dog's blood

• commensalism

• mutualism

• parasitism

• predation

An example of a situation in which an organism produces energy that is used by another organism is the relationship between a primary consumer and a

• bird

• mammal

• plant

• fish

Mistletoe grows on the branches of an oak tree and penetrates the bark to obtain nutrients. This type of interaction is

• mutualistic

• commensalistic

• hydrophobic

• parasitic

A wasp feeds on the nectar of an orchid. In the process the wasp gains nutrition while picking up the orchid's pollen and spreads the plan't pollen to the next flower visited. The relationship between the wasp and the orchid can be described as -

• reversible

• mutualistic

• parasitic

• predatory

Interactions between species that have no effect on one participant are rare and examples include

• commensalism

• mutualism

• predation

• competition

Some plants have very long taproots. This adaptation helps these plants survive in a -

• temperate forest by needing very little water

• tundra by taking water from below the permafrost

• prairie by absorbing large amounts of surface water

• desert by reaching deep underground water supplies

Which of the following is likely to cause a decrease in a predator population

• fewer prey

• more primary producers

• predator populations vary

• reduction in competition

Thick fleshy stems with thick waxy covering would most likely be useful adaptations for which of the following types of plants

• desert plants that need to conserve water

• prairie plants that need to survive fires

• tundra plants that need to conserve heat

• rain forest plants that need to repel insects

a bird stands on one leg and pulls the other up close to its body, covering the leg with its feathers. Then, the bird fluffs up its feathers and tucks its beak beneath its wing. Which of these most likely describes the reason for this activity by this bird?

• it is a desert bird trying to conserve water

• it is a forest bird trying to avoid predators

• it is a tundra bird trying to conserve heat

• it is a tropical bird trying to find food

A certain type of toad resembles tree bark with its brown color and rough skin. A certain type of frog has a bright yellow-green color with red toes and smooth skin. How does the appearance of each organism most likely help them survive?

• both appearances act as camouflage

• both appearances scare off predators

• the toad's appearance is to avoid detection, while the frog's appearance is to scare off predators

• the toad;s appearance is to scare off predators, while the frog's appearance is to avoid detection