Bio 106 2

What is a zygote

A diploid cell that is the product of fertilization when two haploid gametes fuse

When a pigeon is hunted almost to extinction the resulting survivors form a population the population is less genetically diverse than the original population this is an example best described by

Bottleneck effect

In which of the following taxa does the mature sporophyte depend completely on the gametophyte for nutrition

Bryophyta

Im both lichens and mycorrhizae what does the fungal partner provide to its photosynthetic partner

Carbohydrates

Evolution

Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.

What is a key trait that plants gave in common with the charophyceae

Development of phargmoplast

What is the function of fleshy fruit angiosperm replication

Facilitates seed dispersal

What is true about genetic drift

Genetic drift is based on random processes that can lead to unpredictable changes in allele frequencies in a population

Plants that bear two types of spores resulting in male and female gametophytes are called

Heterosporous

When two species both have similar anatomical structures that were inherited from the same ancestor that also had them the similarities are referred to as being

Homologies

What is this an example of male northern elephant seals are 5 to 6 times heavier than the females and fiercely fight for dominance over Harem of females extreme weight of a males in aggressive behavior is most likely the result of what

Intrasexual selection

Taxonomy and Linnaeus developed it

Is the classifying and grouping of similar organisms

Mosses grow close to the ground because they will

Lack vascular tissue

In the life cycle of a fungus which of the following normally does not take place between the events of karyoganmy and plasmogamy

Meiosis

Gymnospersms and angiosperm have the following in common except

Ovaries

What advantages do seeds provide over spores

Protection and supply of food

In the alternation of generation life cycle a zygote is furmed after fertilization takes place. This zygote grows into an adult plant called

Sporophyte

Of the following which is not a part of Darwin's theory of natural selection

Suitable variations in a population lend to be passed on while unsuitable variations in populations are not

allopatric speciation

The formation of new species in populations that are geographically isolated from one another.

Liverworts misses and hornwarts are non vascular plants that have what in common

The gametophyte

I'm the moss life cycle which of the following is not correct

The gametophyte is diploid

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

allopatric speciation

What is the cell wall of hyphae made of

chitin

What two tissues result from the double fertilization in angiosperms

embryo and endosperm

In which group did the vascular tissue first appear

fern

When a mycelium infiltrates an unexploited source of dead organic matter, what are most likely to appear within the food source soon thereafter?

fungal enzymes

archegonia and antheridia are?

haploid

DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that

humans and chimpanzees share a relatively recent common ancestor.

Which one below is not a reproductive isolating mechanism

individual isolation

Male long-tailed widowbirds have long tail feathers that are not of advantage for flying. The feathers are most likely the result of:

intersexual selection

Normally, the gametophyte

is haploid

Which of the following names does not describe a phylum of fungi

oomycete

The key to speciation is ____ of populations.

reproductive isolation

What structure of a plant is normally the primary uptake organ for nutrients such as nitrogen and phosphate

root

In pollination what part of the flower receives the pollen

stigma

In a haploid cell how many allele for a single gene can you expect at most

2

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

Analogies

Which of the following statements is true about natural selection

Artificial selection potentially favors traits that maybe detrimental under natural selection

Spores are an important reproductive tool for fungi. What is true about them?

They are haploid

Why do gymnosperms not have fruits

They lack ovaries