Biology 5.3-5.5

Question 1

nonflowering vascular
plants with spore-­bearing leaves and horizontal underground stems

Answer 1

ferns

Question 2

tiny, one-­celled reproductive structures that can grow into distinct or independent organisms under the proper conditions

Answer 2

spores

Question 3

groups of minute spore cases

Answer 3

sori

Question 4

minute spore cases

Answer 4

sporangia

Question 5

the stage that you see and think of as a fern; as its name implies, it is an asexual stage that produces spores

Answer 5

sporophyte

Question 6

much smaller and is the sexual stage that produces gametes

Answer 6

gametophyte

Question 7

quite different from the original fern plant and is the beginning of the gametophyte generation

Answer 7

prothallus

Question 8

creep­
ing vascular plants with erect stems that bear spores in club-shaped, cone-­like structures

Answer 8

club mosses

Question 9

vascular
plants with unique hollow, jointed stems and very small leaves present only at the joints

Answer 9

horsetails

Question 10

nonvascular plants
that lack xylem and phloem, the tissues that conduct water and food in vascular plants

Answer 10

mosses

Question 11

moss-like plants and liverworts

Answer 11

bryophytes

Question 12

tiny hair­ like threads which grow into the soil to absorb water and minerals

Answer 12

rhizoids

Question 13

is not a moss but a flow­ering plant and a member of the pineapple family.

Answer 13

spanish moss

Question 14

peat moss

Answer 14

moss that helps prevent soil erosion

Question 15

d plant materials that collect in swamps and marshes (peat bogs) over time

Answer 15

peat

Question 16

alternation of generations is what

Answer 16

when plants use both a sexual and sexual reproduction

Question 17

lack true leaves, roots, and stems and grow along the surface of the soil, attached by rhizoids

Answer 17

liverworts

Question 18

the smallest of the green,
chlorophyll-­containing organisms

Answer 18

algae

Question 19

microorganisms that float near the surface of the water and provide food for larger organisms

Answer 19

plankton

Question 20

the largest group of algae

Answer 20

green algae

Question 21

groups of algae

Answer 21

colonies

Question 22

unicellular green alga that lives in both soil and water, is unusual in that it possesses two distinctly animal­-like characteristics

Answer 22

Chlamydomonas

Question 23

whip­like structures that allow locomotion

Answer 23

flagella

Question 24

d lives as a single cell with a belt­like constriction about its middle dividing it into two identical semicells

Answer 24

desmids

Question 25

live in pale­-green globular colonies, which are just barely visible to the unaided human eye. Each colony is hollow, with a watery fluid filling the inner cavity

Answer 25

volvox

Question 26

have been used in biological laboratories for many types of scientific investigations

Answer 26

Spirogyra

Question 27

possibly the most abundant life form on earth except for bacteria

Answer 27

diatoms

Question 28

creator of the Nobel prize, discovered that diatomaceous earth would absorb three times its own weight of nitroglycerin

Answer 28

alfred nobel

Question 29

contain green chlorophyll, but it is masked by the presence of the same golden­-brown pigment found in yellow algae.

Answer 29

brown algae

Question 30

the largest of the brown algae

Answer 30

kelp

Question 31

seaweed is in what algae group

Answer 31

brown algae

Question 32

a gelatinous sub­stance used in many food products

Answer 32

carrageenan

Question 33

h laboratories use as a culture medium for growing bacteria, is also derived from red algae

Answer 33

agar

Question 34

are a monophyletic group of single-celled eukaryotes constituting the phylum Dinoflagellata[5] and are usually considered protists

Answer 34

dinoflagellates

Question 35

occurs when this dinoflagellate blooms, or grows so rapidly that the water is tinged with a pinkish color

Answer 35

red tide

Question 36

] are microscopic, one-­celled, aquatic organisms found in both fresh water and salt water

Answer 36

dinoflagellates

Question 37

blue and red pigments along with the green chlorophyll;

Answer 37

cyanobacteria

Question 38

process in which plant nutrients enter an aquatic ecosystem

Answer 38

Eutrophication

Question 39

genus of nitrogen­-fixing cyanobac­teria whose cells look like tiny beads or barrels

Answer 39

anabaena