Final Exam Exam Units 1, 5, 6: Evolution, Ecology and Biomes

A scientist creates the following graph to demonstrate the effect of limiting factors on a population of rabbits. According to the graph, during which year did the limiting factors in this environment most affect the rabbit population?

• Year 1

• Year 2

• Year 3

• year 4

Which of these cases provides embryological evidence that two species share a common ancestor?

• two different species with similar patterns of early development

• two species with very similar DNA

• two species with different body structures

• two species with different structures that have similar functions

The size of a population is always changing based on:

• Biotic Factors

• Abiotic Factors

• All interactions affecting that population

• All of these

Juan is studying fossils. His teacher wrote the following statements on the board and asked the students to put them in the correct order to describe how fossils are formed.

1. Minerals seep into the organism's body and replace it with stone.

2. The organism completely decomposes, leaving behind an imprint.

3. An organism dies and its body is covered with a layer of sediment.

4. Time passes, and sediment layers continue to build up on the organism.

• 3, 2, 1, 4

• 3, 4, 1, 2

• 2, 3, 4, 1

• 1, 3, 2, 4

Which level or organization is pictured here?

• ecosystem

• community

• organism

• biome

Which level of organization is pictured here?

• organism

• ecosystem

• community

• population

The diagram below shows a portion of the fossil record in sedimentary rock. Different rock layers and fossils are clearly visible.

Which layer of rock is the oldest?

• Layer A is the oldest.

• Layer B is the oldest.

• Layer D is the oldest.

• They are all the same age.

The picture below shows parts of a food chain for an Artic environment. In this part of the food chain, what is the true shrimp?

• They pass on the most energy in the food chain.

• They supply all of the energy for the food chain.

• They consume the largest amount of energy.

• They are the last living things to get energy.

What is the largest level of organization in the environment?

• organism

• community

• biosphere

• ecosystem

Sexual reproduction carries with the potential for genetic mutation. Some mutations are destructive as they make an organism less capable of surviving, while other mutations are beneficial, and improve the individual's chance for survival. If an animal has a genetic mutation that allows it to defend itself extremely well, which of the following is most likely to occur?

• The characteristic would skip the immediate offspring and appear in a future generation.

• The characteristic would disappear from the species in a few generations.

• The characteristic would be passed on to every member of the next generation.

• The characteristic would be represented in more individuals in successive generation.