Seedless Nonvascular Bryophytes

Question 1

Derived traits

Answer 1

-alternation of gametophyte and sporophyte generations
-multicellular organs where sperm and egg made
-spores produced in sporangia
-apical meristems

Question 2

Mitosis

Answer 2

-growth, cell replacement, asexual reproduction
-genetically identical daughter cells
-haploid into 2 other haploid cells (or diploid)

Question 3

Meiosis

Answer 3

-makes gametes
-genetically different
-2n diploid into 4 n haploid cells

Question 4

Haploid

Answer 4

1 set chromosomes, gonads

Question 5

Diploid

Answer 5

2 set somes, one each parent

Question 6

gametophyte

Answer 6

haploid

Question 7

sporophyte

Answer 7

diploid

Question 8

archegonia

Answer 8

egg

Question 9

antheridia

Answer 9

sperm

Question 10

hermaphrodites

Answer 10

both

Question 11

multicellular dependent

Answer 11

-sperm fertilizes egg in female
-protection and nutrient transfer benefits

Question 12

sporangia

Answer 12

sporocytes undergo meiosis to generate haploid spores

Question 13

spores

Answer 13

seed like function, produce gametophyte

Question 14

sporophyte

Answer 14

big plant structure

Question 15

sporangia

Answer 15

spore making tissue

Question 16

meristems

Answer 16

stem cells undergoing mitosis for continual growth

Question 17

clade

Answer 17

all inclusive, monophyletic

Question 18

grade

Answer 18

orgs w/ shared bio features but not all descendants included (paraphyletic)

Question 19

bryophytes

Answer 19

-liverworts, mosses, hornworts
-lack vascular tissue and true roots
-gametophyte stage dominant

Question 20

rhizoids

Answer 20

-for anchoring
-no vascular tissues

Question 21

life cycle

Answer 21

-sporophytes stick up and utilize wind to disperse spores
-spores undergo mitosis and produce haploid gametes
-sperm swim and fertilize
-diploid zygote in gametophyte undergoes mitosis
-young sporophyte shoots up out of gametophyte
-develops seta, capsule, foot