Ch. 30 Plant Reproduction Flashcards Preview

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Flashcards in Ch. 30 Plant Reproduction Deck (22):
1

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

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

2

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

air and wind

3

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

coleochaete and chara

4

what made sexual reproduction independent of water?

seeds! (gymnosperms and angiosperms)

5

what do all plants have in common?

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

6

zygotes and spores, unicellular or multicellular?

unicellular

7

gametophytes and sporophytes, unicellular or multicellular?

multicellular

8

how many multicellular phases do land plants have?

2

9

how are spores produced? (mitosis or meiosis)

meiosis

10

how are gametophytes produced? (mitosis or meiosis)

mitosis

11

how are zygotes produced?

syngamy

12

how are sporophytes produced?

mitosis

13

are sporophytes diploid or haploid?

diploid

14

are zygotes diploid or haploid?

diploid

15

are spores diploid or haploid?

haploid

16

are gametophytes diploid or haploid?

haploid

17

characteristics of gametophytes (nonvascular, bryophytes, algae)

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

18

characteristics of sporophytes (nonvascular, bryophytes, algae)

-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

19

are vascular plants gametophyte or sporophyte dominant?

sporophyte dominant

20

are non vascular plants gametophyte or sporophyte dominant?

gametophyte dominant

21

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

true

22

what are fruits?

swollen ovaries which contain seeds