Lab 4 (Nonvascular seedless plants)

Question 1

alternation of generations

Answer 1

alternating haploid and diploid stages of the lifecycle

Question 2

thallus

Answer 2

plant body of bryophytes (n)

Question 3

rhizoids

Answer 3

rootlike structures of bryophytes

Question 4

antheridia

Answer 4

male sex organs - sperm

Question 5

archegonia

Answer 5

female sex organs - eggs

Question 6

gemmae cups

Answer 6

dorsal surface of some thalli near midrib, used for asexual reproduction (n)

Question 7

gennae

Answer 7

detaches from parent and can grow into a new individual in asexual reproduction (fragmentation)

Question 8

dioecisious

Answer 8

male/female reproductive organs in separate individuals

Question 9

monoecious

Answer 9

male/female reproductive organs in same individual

Question 10

archegoniophores

Answer 10

specialized stalks on female plants with archegonia

Question 11

atheridophores

Answer 11

specialized stalks on male plants with antheridia

Question 12

foot

Answer 12

connects sporophyte to gametophyte

Question 13

spore

Answer 13

haploid cells produced by sporophyte, develop into gametophyte

Question 14

capsule

Answer 14

contains the sporangium in some plants

Question 15

calyptra

Answer 15

covers capsule at the top when immature, left over from archegonia

Question 16

operculum

Answer 16

caplike structure on tip of capsule in mature sporophyte

Question 17

seta

Answer 17

holds meiotic capsule that produces spores

Question 18

gametophyte

Answer 18

haploid stage, produces gametes by mitosis

Question 19

sporophyte

Answer 19

diploid stage, produces spores by meiosis (remains attached to gametophyte in nonvascular plants)

Question 20

gametes

Answer 20

egg/sperm - haploid cells produced by gametophyte by mitosis, fuse into zygote in fertilization

Question 21

zygote

Answer 21

diploid, develops into embryo then sporophyte

Question 22

Hepaticophyta

Answer 22

liverworts, eg. Marchantia

Question 23

Bryophyta

Answer 23

mosses, eg. Polytrichum

Question 24

Anthocerophyta

Answer 24

hornworts, eg. Anthoceros

Question 25

herbarium

Answer 25

collection of plants preserved for research, including full shoot, top/bottom of leaves, and any fruits/seeds