Big Idea 1: The process of evolution drives the diversity and unity of life.

(Big Idea 1, #2) This Pelican's beak is an example of an adaptation of an animal, or a unique characteristic of an animal that helps it survive and reproduce through natural selection. The long beak and the pouch in its throat allows it to drain water from the prey it scoops up before swallowing it.

(Big Idea 1, #3) This fruit is an example of an adaptation of a plant.  An adaptation is a characteristic an animal gets via natural selection that helps it survive and reproduce. The fruit on this plant helps it spread seeds by allowing an animal to eat it and spread the seeds when it defecates.

(Big Idea 1, #4) An amniotic egg, such as this chicken egg, is any terrestrial egg equipped with a amnios laid by a tetrapod. 

(Big Idea 1, #6) An angiosperm is any flowering plant. This flower is an angiosperm.

(Big Idea 1, #10) An arthropod (jointed leg) is an invertebrate with jointed appendages and an exoskeleton. This crab is a crustacean, which is a subphylum of arthropods.

(Big Idea 1, #11) Artificial selection, or selective breeding is when an organism is bred for specific traits. Lettuce was bred from wild mustard by farmers to have specific traits.

(Big Idea 1, #13) A nonvascular plant has neither a xylem nor phloem. This moss has no vascular system and is a nonvascular plant.

(Big Idea 1, #14) This Bongo is an example of a chordate. A chordate is any animal with a notochord and that at one point in its life cycle had a post-anal tail and gill-like slits.

 (Big Idea 1, #18) This palm tree is an example of a monocot. A monocot is an angiosperm whose seedlings have one cotyledon.

(Big Idea 1, #20) This mushroom is a part of the Fungi kingdom. Fungi are known as having cell walls made of chitin, unlike plants whose cell walls are made of cellulose.

(Big Idea 1, #21) A gastropod (stomach-foot) is a Mollusk such as this sea snail. Gastropods mainly consist of snails and slugs, but also include species such as limpets.

(Big Idea 1, #22) Genetic variation within a population is when even within a group of one species, different alleles and traits may occur. These koi fish have different colors and body patterns, but are of the same population.

(Big Idea 1, #23) This tiger is an example of a gnathostome, or a vertebrate with jaws. 

(Big Idea 1, #25) A Gymnosperm such as this evergreen is a plant whose seed is unenclosed when unfertilized.

(Big Idea 1, #27) Lichen is an organism made up of a fungus and another organism that is capable of photosynthesis.

(Big Idea 1, #29) Potatoes are good examples of modified roots of plants. The potato is a plant root that is also a vegetable. It absorbs and stores carbohydrates as well as other nutrients.

(Big Idea 1, #30) This poison ivy plant's stem has thorns to protect it from predators that may harm it. 

(Big Idea 1, #37) This starfish has radial symmetry, or can be cut into several symmetrical sections.

 (Big Idea 1, #39) A tetrapod is one of the first four legged vertebrates and their offspring. Tetrapods include reptiles, mammals, and amphibians. This iguana is an example of a tetrapod.

(Big Idea 1, #41) A vestigial structure is a part of an organisim that no longer has any use to that creature, but still exists as a result of evolution. This rainbow boa has a pelvis bone, but as it no longer has a use for it, it is a vestigial structure.