The competitive exclusion principle can be best expressed as:

1.	the more abundant species will exclude the less abundant species through competition
2.	competition for the same resources excludes species having different lifestyles
3.	no two species can occupy the same niche indefinitely when resources are limited
4.	larger organisms exclude smaller ones through competition as in the case of large trees controlling underbrush

Whale barnacles attach typically to baleen whales without harming them. This relationship is called as:

A parasitism that does not involve feeding on the body of the host is:

The adaptation that a prey species avoid being detected by a predator would be:
1. Mullerian mimicry
2. Batesian mimicry
3. aposematic coloration
4. cryptic coloration

The appearance of an animal that warns predators it is toxic, distasteful or dangerous is called as:
1. Batesian mimicry
2. Mullerian mimicry
3. aposematic coloration
4. cryptic coloration

The chemical defence produced by plants against herbivory are:

All the following are symbiotic relations except:
1. monarch butterflies and viceroy butterflies
2. lichens
3. mycorrhizae
4. tapeworms and humans

To avoid herbivory milkweeds secret latex containing:
1. cardiac glycosides
2. stipules
3. mustard oils
4. strychnine

The two species physically interfere with one another by aggressively attempting to exclude one another from particular habitats in:

Monarch butterflies are toxic and unpalatable to predators because they: