Question

QUESTION 1

A fluke is a flatworm that lives in the digestive system, liver, or lungs of another animal. The fluke takes in nutrients from the body of this animal. This relationship is best described as ____________________.

		herbivory
		parasitism
		predation
		competition

1 points   

QUESTION 2

A harmless scarlet kingsnake has a color pattern similar to that of a venomous coral snake. Why is this an advantage for the kingsnake?

		The coloration keeps both snakes camouflaged and helps them to obtain prey.
		There is no advantage to this coloration.
		Red is a difficult color for most predators to see.
		Predators will avoid the kingsnake, because they won’t be able to distinguish it from the coral snake.

1 points   

QUESTION 3

A horse has only one baby per year, and the mother cares for that baby for an extended period of time. These traits are typical of _______________.

		G-selected traits
		r-selected traits
		K-selected traits
		N-selected traits

1 points   

QUESTION 4

A population may increase in size due to ____________________.

		habitat destruction
		birth and immigration
		birth and emigration
		death and emigration

Answer 1

Question 1. parasitism

A parasite (fluke) depends on host organism (animal) for food and shelter.

Question 2. Predators will avoid the kingsnake, because they won’t be able to distinguish it from the coral snake.

Such mimicry can confuse predators so that they can leave the harmless snake thinking of harmful one.

Question 3. K-selected traits

K-selection involves a few "expensive" offsprings under stable environment. Since only one offspring is produced and is well taken care, it can be considered to be K-selected traits.

Question 4. birth and immigration

Only these factors can lead to increase in number of individuals.