plant diversity

Question 1

describe characteristics of a fern

Answer 1

flagellated sperms
xylem with vessels
separate gametophyte and sporophyte generations
no seeds

Question 2

describe characteristics of moss

Answer 2

1. they can grow in very harsh environments
2. they can tolerate drying out
3. peat in a by-product of the growth of certain moss
4. moss lacks a vascular system
5. a symbiosis between a moss and a fungus is known as mycorrhizal associations

Question 3

what are diatoms

Answer 3

unicellular algae
major component of phytoplankton
member of SAR group of protist

Question 4

what is golden algae

Answer 4

biflagellate
components of freshwater and marine plankton
dinobryon is a colonial golden alga in fresh water
member of SAR group of protist

Question 5

what is brown algae

Answer 5

largest and most complex algae
multicellular
marine (seaweed)
member of SAR group of protist

Question 6

who are members of the archeaplastida classification of protists

Answer 6

red algae
chlorolphytes
charophytes
plants

Question 7

what is red algae

Answer 7

red due to an accessory pigment call phycoerythrin, masks the green chlorophyll
multicellular
largest seaweed

Question 8

what are charophytes

Answer 8

land plants evolved from green algae

Question 9

what are the four key traits that appear in all plants

Answer 9

• alternation of generations - multicellular, dependent embryos
• walled spores produced in sporangia
• multicellular gametangia
• apical meristems

Question 10

what is alternation of generations

Answer 10

the change in generation between haploid and diploid form

Question 11

plants alternate between two multicellular stages, a reproductive cycle called…

Answer 11

alternation of generations

Question 12

when diploid cells called sporocytes undergo meiosis what do they generate

Answer 12

haploid spores

Question 13

what are nonvascular plants commonly called

Answer 13

bryophytes

Question 14

what is larger and lives longer between gametophytes or sporophytes

Answer 14

gametophytes

Question 15

bryophytes are represented today by three phyla of small herbaceous (nonwoody) plants called…

Answer 15

1. phylum hepatophyta - liverworts
2. phylum anthocerophyta - hornworts
3. phylum bryophyta - mosses

Question 16

what are the smallest and simplest sporophytes of all extant plant groups

Answer 16

bryophyte sporophytes

Question 17

do moss have a vascular system

Answer 17

no

Question 18

what are living vascular plants characterized by

Answer 18

• life cycles with dominant sporophytes
• vascular tissues called xylem and phloem
• well-developed roots and leaves

Question 19

what two types of tissue do vascular plants have

Answer 19

xylem - minerals and water
phloem - living cells and transports sugars, amino acids and organic products

Question 20

sporophylls are modified leaves with

Answer 20

sporangia

Question 21

euglenids have one or two ______ that emerge from a pocket at one end of the cell

Answer 21

flagella

Question 22

in brown algae, the _____ anchors the stemlike ________, which in turn supports the leaflike ________

Answer 22

holdfast
stipe
blades

Question 23

_____ _____ called charophytes are the closest relatives of _______

Answer 23

green algae
land plants

Question 24

plants alternate between two ______ stages, a reproductive cycle called _____ __ ________

Answer 24

multicellular
alternation of generations

Question 25

plants sustain continual growth in their _____ _______

Answer 25

apical meristems

Question 26

_______, which include _______, hornworts and liverworts have life cycles dominated by the haploid ______ stage

Answer 26

bryophytes
mosses
gametophyte

Question 27

vascular plants have life cycles dominated by the ______ stage

Answer 27

sporophyte

Question 28

angiosperm megaspores usually have how many integuments

Answer 28

two