Ecology - Organisms & Population Questions and Answers

One way in which organisms are classified is by how they obtain their food for energy use. Listed and defined below are five categories that describe the food habits of organisms. Herbivore - feeds directly on plant matter Carnivore- feeds on the flesh of other organisms Omnivore -includes both plant and animal matter in its diet Parasite - obtains its nourishment by attaching itself to another organism, called a host Decomposer - usually lives in soil and obtains food by breaking down the wastes and remains of other organisms Based on the information above, what would be the relationship between a flea and its canine or feline victim? A. prey-predator B. organism-decomposer C. parasite-host D. herbivore-carnivore E. omnivore-carnivore

By tracking population change over time, scientists can learn how specific populations change and may be better able to predict how a population is likely to change in the future. O True O False

A variety of methods can be used to sample populations to determine their size and density, depending up whether the organism is small or large young or old immobile or mobile native or introduced

What happened in 1215? Columbus sailed to the West Indies (North America). The Pilgrims arrived at Plymouth Rock King John was forced to sign the Magna Carta Jamestown was founded. The Declaration of Independence was signed.

Here is a short program intended to simulate population growth starting with a single individual and proceeding through multiple time steps. Something is wrong: when you run the code, the population doesn't grow. (A) What is wrong and how would you fix it? (B) Write the first four lines of output you would see if the code were correct. (C) What type of growth is this logistic, orthologistic, or exponential, and why?

The yellow-spotted cichlid will wait to lay its eggs until another fish species, the purple-striped cichlid spawns. The yellow-spotted will then bury the eggs of the purple striped cichlid in the sediment, which convinces the the purple-striped cichlid that the yellow-spotted eggs are actually their own. The purple-striped cichlid then provides parental care for the eggs of the other species instead of their own offspring. Which concept below describes this situation?: a. Predator-Prey interaction b. Mutualism c. Brood Parasitism d. Commensalism e. Competition

Approximately how deep (below sea level) are the deepest deep-sea trenches? 30 km 100 km 10 km 3 km

Oil, gas and coal (fossil fuels) originate from plant debris buried deeply which undergoes chemical changes. True False

The primary habitat in the natural world from which a pathogen originates is called vector reservoir incubation carrier wild

Many mammals have skins and mucous membranes that are sensitive to phenolic secretions of plants like poison oak (Rhus). These secondary compounds are primarily adaptations that A) favor pollination B) decrease competition C) foster seed dispersal D) inhibit herbivory

What is the adaptation? What could we use it for? What would be some challenges in 'harnessing' this adaptation for our own use? Which question would you ask your classmates that might generate further discussion?

If two modern organisms are distantly related in an evolutionary sense, then one should expect that their chromosomes should be very similar. they shared a common ancestor relatively recently. they live in very different habitats. they should be members of the same genus. they should share fewer homologous structures than two more closely related organisms.

You are studying three populations of birds. Population A has ten birds, of which one is brown (a recessive trait) and nine are red. Population B has 100 birds, of which ten are brown. Population C has 30 birds, and three of them are brown. Q: Which population is most likely to be subject to the bottleneck effect? population B They are all equally likely population C It is impossible to tell from the information given. population A

A fruit fly population has a gene with two alleles, A1 (dominant) and A2 (recessive). Tests show that 70% of the gametes produced in the population contain the A1 allele. Which statements are correct? You may select more than one answer. If the population is in Hardy-Weinberg equilibrium, the proportion of the flies carrying A1 alleles is 0.49 If the population is in Hardy-Weinberg equilibrium, the proportion of the flies carrying A1 alleles is 0.42 Can not determine without knowing the total population of the sample. If the population is in Hardy-Weinberg equilibrium, the proportion of the flies carrying A1 alleles is 0.09 If the population is in Hardy-Weinberg equilibrium, the proportion of the flies carrying A1 alleles is 0.21

The Persians were the first civilization to come up with what? A. Farming B. Written Language C. Music D. Common Currency

What is the term for a Zoroastrian priest? A. Zara B. Ahura C. Magi D. Mazda

Which statement most accurately describes the relationship between Hinduism and the Indian caste system? A. Individuals born into a higher caste were considered to be closer to achieving moksha. B. Individuals born into the lower castes are considered to have earned good karma. C. Those born into higher castes must have lived previous lives of bad deeds and needed to atone.

__ became some of the primary products harvested in Cuba. A. Bananas and apples B. Bananas and sugar cane C. Bananas and olives