Bio 106 Exam 2 - (2019 version)

Darwin's finches, the process where 14 species evolved from a common ancestor is called?

Adaptive Radiation

This species concept says something is the same species based in their ability to mate with one another and to produce viable, fertile offspring

Biological

When a type of pigeon is hunted almost to extinction, the resulting survivors form a population. This population is less genetically diverse than the original population. This is an example best described by

Bottleneck effect

In the levels of classification, what comes after PHYLUM?

Class

A sporangium is normally?

Diploid

If finches with large beaks and finches with small beaks increase in a population while finches with average sized beaks decrease, which pattern of natural selection has most likely occurred?

Disruptive selection

What two tissues result the double fertilization in angiosperms?

Embryo and endosperm

Following fertilization the bryophyte embryo is totally dependent on the sporophyte

False

In which group did the vascular tissue first appear?

Fern

How does a moss differ from a fern?

Ferns have roots whereas a moss does not

An example for a homoplasy in this lecture was

Fins of whales and lchtyosuars

Which of the following is a TRUE statement about plant reproduction?

Gametophytes represent the generation that produces egg and sperm cells

An organism's scientific name consists of it's

Genus and Species

In geology, the concept of ________ suggested that the earth is constantly subject to shaping and re-shaping by show but continuous process

Gradualism

Fungal hyphae in which two genetically distinct kinds of nuclei occur together are said to be

Heterokaryotic

With few exceptions, the fungal vegetative body is composed of

Hyphae

Of the following, which is NOT part of Darwin's theory of natural selection?

Individuals with variations suitable to their environment have shorter life spans and produce fewer offspring

Choose which scientist corresponds best with the statement: Organisms change due to inborn urge

Lamarck

According to evolutionary theory, which plant division evolved first?

Moss (bryophyte)

The idea _____ was that organisms better have adapted to their environment tend to survive and produce more offspring

Natural selection

In the lab computer simulation with snails and European green crabs, what happened when there was no variation in the population, even though the crabs still chose the easiest ones they could find, and even though shell thickness was inherited?

No shift in shell thickness was observed in the population

Which of the following names does NOT describe a phyla of fungi?

Oomycete

Site where females gametes or eggs cell develop. It is the _______?

Ovule

In gymnosperms that microspores develop into

Pollen grains

Which of the following statements is wrong in the context of natural selection?

Positive traits are less likely to be passed on to offspring then negative traits

A reproductive barrier that occurs before the sperm fertilizes the egg is a

Prezygotic barrier

In alternation of generations life cycle a zygote is formed after fertilization takes place. This zygote grows an adult plant called a

Sporophyte

Which generation, sporophyte or gametophyte, is dominant in ferns?

Sporophyte

Human babies don't do well if they are born too small. If they are too big complications can occur during birth. Baby size should then be selected for by which method?

Stabilizing

In pollination, what part of the flower receives the pollen?

Stigma

What is the science of identifying, classifying, and naming living things called?

Taxonomy

You find a green, plant-like looking organism in a lake. You have a microscope and can carefully analyze it. What criteria would point out that you exclude... it is a green algae you investigate?

You find a multicellular dependent embryos The organism has multicellular gametangia

Lichens are a symbiotic relationship between

algae and fungi

mychorrhizae consists of a mutually beneficial association of _____ and ______

fungi and plant roots

Mosses grow close to the ground because they ...

lack vascular tissue

Antheridia are ..

male

Individuals in a population that have a variation which gives them an advantage in their environment are more likely to...

survive and reproduce

Liverworts, mosses and hornworts are non-vascular plants that have in common that...

the gametophyte is the dominant generation

Labeling of the flower

1. Stamen 2. Petal 3. Carpel 4. Sepal

_____ speciation occurs when geographic isolation creates a reproductive barrier

Allopatric

Two rock squirrel species exist at either side of the Grand Canyon. There speciation process is most likely based on

Allopatric Speciation

_____ are similar anatomical features in different species that do not have a known common ancestor

Analogies

What is a mutation?

Any change in a gene or chromosome

Which of the following statements is true about artificial selection?

Artificial selection potentially favors traits that maybe detrimental under natural selection

All fungi are heterotrophs?

True

Charles Lyell proposed

Uniformitarianism