Biology Exam 4: evolution of plants and animals pt.2

Why are ferns considered incompletely adapted to the terrestrial environment, when compared with other plants?

Their sperm are flagellated.

Which characteristic is common to all chordates?

They all have a notochord sometime during their life cycle.

What important role do fungi play in many ecosystems?

They decompose organic material.

This diagram shows what process?

alternation of generations

Exploring in the tropics, you discover a nonvascular plant that produces pollen. What type of plant have you discovered?

an entirely new type that you will get to name

In angiosperms, the male gametophyte develops within ________.

anthers

There are more species of ______ than of any other type of animal.

arthropods

All organisms that photosynthesize fit into which nutritional category?

autotrophs

Prokaryotes reproduce by means of ________.

binary fission

What is this organism?

bryophyte

Which series of terms correctly illustrates the sequence of the origin of modern groups of plants?

bryophytes, ferns, gymnosperms, angiosperms

Like plants, fungi have ______; however, in plants they are composed of ______, whereas in fungi they are composed of ______.

cell walls... cellulose... chitin

The common ancestor of all animals is likely to have been a ________.

colonial, flagellated protist

Almost every element of bird anatomy is modified for what?

enhancement of flight

________ are seedless vascular plants.

ferns

What adaptation accounts for the unparalleled success of the angiosperms?

flowers

Gametophytes are ________; sporophytes are ________.

haploid; diploid

Nutritionally, all fungi are ________.

heterotrophs that acquire their nutrients by absorption

The phylogenetic tree indicates that annelids are most closely related to ________.

molluscs

In ________ the gametophyte is more obvious than the sporophyte.

mosses

Which group of plants lacks vascular tissue?

mosses

In angiosperms, what structures house female gametophytes?

ovules

Eukaryotes that are not fungi, animals, or plants are classified in a "catch-all" category called ________.

protists

What type of symmetry does this organism exhibit?

radial

Gametophytes produce ________.

sperm and eggs

A characteristic that is shared by snakes and birds is ______.

the amniotic egg

A feature unique to mammals includes ________.

the presence of hair