Ch. 30 Plant Reproduction

Question 1

how did the algal ancestors of land plants disperse their eggs and sperm?

Answer 1

water currents

ex. bryophyte sperm are motile and rely on water to swim and fertilize

Question 2

how are the spores (product of meiosis) in all land plants dispersed?

Answer 2

air and wind

Question 3

what two groups of green algae are most closely related to land plants?

Answer 3

coleochaete and chara

Question 4

what made sexual reproduction independent of water?

Answer 4

seeds! (gymnosperms and angiosperms)

Question 5

what do all plants have in common?

Answer 5

1. reproduce sexually
2. produce a green body (N)
3. disperse their offspring

Question 6

zygotes and spores, unicellular or multicellular?

Answer 6

unicellular

Question 7

gametophytes and sporophytes, unicellular or multicellular?

Answer 7

multicellular

Question 8

how many multicellular phases do land plants have?

Answer 8

2

Question 9

how are spores produced? (mitosis or meiosis)

Answer 9

meiosis

Question 10

how are gametophytes produced? (mitosis or meiosis)

Answer 10

mitosis

Question 11

how are zygotes produced?

Answer 11

syngamy

Question 12

how are sporophytes produced?

Answer 12

mitosis

Question 13

are sporophytes diploid or haploid?

Answer 13

diploid

Question 14

are zygotes diploid or haploid?

Answer 14

diploid

Question 15

are spores diploid or haploid?

Answer 15

haploid

Question 16

are gametophytes diploid or haploid?

Answer 16

haploid

Question 17

characteristics of gametophytes (nonvascular, bryophytes, algae)

Answer 17

• main plant body
• haploid (N)
• reproduces sexually by producing eggs/sperm
• when sperm and eggs fuse, it gives rise to the sporophyte generation

Question 18

characteristics of sporophytes (nonvascular, bryophytes, algae)

Answer 18

• remains attached to gametophytes, small
• asexual
• diploid (2N)
• has a sporangium which produces spores (haploid reproductive cells)
• once spores are dispersed and germinate, produce gametophytes

Question 19

are vascular plants gametophyte or sporophyte dominant?

Answer 19

sporophyte dominant

Question 20

are non vascular plants gametophyte or sporophyte dominant?

Answer 20

gametophyte dominant

Question 21

in all land plants, the embryo is nourished by the female gametophyte (true or false)

Answer 21

true

Question 22

what are fruits?

Answer 22

swollen ovaries which contain seeds