Bio 182 most missed

If the half-life of a radioactive substance is 800 years, what fraction of the original material is left after 3,200 years?

1/16

Many insects make larvae that are very different from the adults. What do you think is NOT an advantage of this system?

Adults and offspring would not compete for potential mates

Which of the following statements is CORRECT regarding lichens?

Air quality indicators

Cysts are used by some protozoan pathogens to spread between hosts. They are formed during _____________.

Asexual reproduction

Which of the following matches a structure of a vertebrate heart with its function?

Atria- receive blood form systemic and pulmonary veins

Heterozygote advantages should be most closely linked to which of the following?

Balancing selection

Which types of fungi form lichens?

Basidiomyocetes & Ascomycetes

What is the only group of Mollusca that does not have radula?

Bivalves

Which of the following is the most predictable outcome of increased gene flow between 2 populations?

Decreasing genetic difference between the 2 populations

A researcher wants to know if gene flow is contributing to evolution of drought tolerance of pintcher plants in a specific bog. As a control she should...

Determine if the population is in Hardy-Weinberg equilibrium

Atria contract ________.

During systole

Trees in temperate forest form root-fungi associations. The fungi form _______ and their hyphae grow ______.

Ectomycorrhizae; in the space between cell walls

The role of secondary metabolites in plants is to _______________.

Enhance survival and reproduction

What group of mammals have a embryos that spend more time feeding through the placenta than the mother's nipples, young that feed on milk, a prolonged period of maternal care after leaving the placenta.

Eutheria

?

Founder effect and genetic drift

During sexual reproduction in fungi, what does plasmogamy mean?

Fusion of two different cytoplasms

Which of the following is NOT a derived characterisitcs shared by land plants?

Gametic life cycle

Which mechanism of evolution has the ability to change the frequencies of a neutral allele?

Genetic drift

Why doesn't inbreeding depression, by itself, cause evolution?

It does not change the populations allele frequencies

All the following are true of secondary phloem except ___________.

It is active for several years

In a small population of apine foxes, you observe increased ear length over 10 years. Is that increased ear length is advantages in this population?

No; evolution takes MANY years

Cyanobacteria, or blue-green algae, are considered the most ancient organisms capable of photosynthesis. Given what you kow about Cyanobacteria, which of the following is the more likely species to be classified as a cyanobacteria.

Nostor verrurosum = a filamentous species often found in shallow streams and creeks and has thylakoids

All seed plants have _______________.

Pollen, ovules, seeds, and wood

Which of the following characteristics is not shared by Lycophytes and Pteridophytes?

Production of seeds

A leaf with one blade and veins that radiate from the petiole of the plant would be classified as a ___________.

Simple leaf with palmate venation

The presence of a lophophore in a newly discovered species would suggest that the species _________.

Suspension feeders

Which of the following is not an example of molecular homologies?

The biochemical pathways for photosynthesis in plants and cellular respiration in animals

Members of the plant family Cactaceae have a # of specialized adaptation. Some mebers of the Family Euphorbiaceae have similar traits. What can you say about the traits?

They are analogous

The only vertebrates in which blood flows directly from respiratory organs to body tissues without first returning to the heart are the ___________.

fish

The difference between uni- and multinucleated fungi is that

uninucleated fungi have septa whereas multinucleated fungi do not.