Question

1) I study a population of penguins with a Ro of 1. What can you tell me about this population?

		a. It is doubling.
		b. It has a type II survivorship curve.
		c. It is demographically stable.
		d. It is neither increasing nor decreasing.
		e. This population is experiencing exponential growth.

2) Populations of Howler Monkeys in Panama experienced a 90% decrease in population numbers in the 1940s due to a yellow fever epidemic. By the 1990s, their population numbers were back to pre-1940s levels. What can you say about the genetic history of this population?

		a. This population is the result of a founder effect.
		b. This population is likely inbred.
		c. Gene flow between these populations was reduced.
		d. This population experienced a genetic bottleneck.

3) What was NOT an adaptation seen by plants when they moved to land?

		a. They developed structural support to help them grow vertically.
		b. They developed mechanisms to deal with dry environments and absorb water.
		c. They developed mutually beneficial relationships with fungi.
		d. They developed chloroplasts.

4) Which of the following is INCORRECT regarding climate change?

		a. The climate has cycled in the past.
		b. According to ice core data, temperature cycles across the past 400,000 years have been positively correlated to cycles of CO2.
		c. The greenhouse gas effect traps heat in the Earth.
		d. In the United States, the largest production of CO2 comes from the residential sector.

5) Which of the following is FALSE regarding protists?

		a. Protists are single-celled organisms.
		b. Protists are eukaryotes.
		c. Protists can have diverse metabolisms (anaerobic vs. aerobic; heterotroph or autotroph).
		d. The majority of protists are motile.

Answer 1

Ans 1. d. It's neither increasing nor decreasing.

An Ro of 1 means that the population is reproducing just enough to replace itself; it will neither increase nor decrease.

Ans 2. d. This population experienced a genetic bottleneck.

This is a drastic decrease in the size of a population due to natural causes such as the disease mentioned in the question.

Ans 3. d. They developed chloroplast.

This wasn't an adaptation because aquatic plants already had chloroplasts in them.

Ans 4. d. In the United States, the largest production of CO2 comes from the residential sector.

This is false as the major contributors in CO2 production are the transportation, power generation and production industries.