Lab 6: Seedless Plants Flashcards Preview

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Flashcards in Lab 6: Seedless Plants Deck (83)
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1

The extant seedless plants consist of the __________, the ___________, and the _____________.

Bryophytes, fern allies, ferns.

2

The term "bryophyte" refers to those plants that lack __________.

Vascular tissue

3

The term "fern allies" refers to seedless plants that contain ___________ but are not _________.

Vascular tissue, ferns

4

Another word for cones?

Strobili

5

The alternation of generations refers to a life cycle that exhibits separate multicellular _________ individuals and multicellular __________ individuals.

Diploid, haploid

6

Two separate generations, the __________ and the __________ are needed to complete one cycle of life.

Gametophyte, sporophyte

7

The __________ is a multicellular individual that may be unisexual or bisexual that produces haploid gamete cells (flagellated sperm or eggs).

Gametophyte

8

Name this process: Male gametophytes release sperm into the surrounding environment to fuse with the retained female gametes.

Fertilization

9

After fertilization, the resulting zygote develops into the diploid, multicellular ___________.

Sporophyte

10

A __________ releases haploid spores into the environment thatg germinate and grow to become a multicellular haploid gametophyte.

Sporophyte

11

In all seedless plants, gametes are produced in jacketed multicellular structures called __________.

Gametangia

12

Two types of gametangia are __________ and __________.

Antheridia, archegonium

13

__________ produce many flagellated sperm, which swim to an __________ that contains a single egg.

Antheridia, archegonium

14

The new sporophyte grows out of the archegonium and and is usually anchored to the __________ by a __________.

Gametophyte, "foot"

15

The __________ is initially dependent on the __________ (zygote to early embryo) for sustenance.

Sporophyte, gametophyte

16

Male reproductive structure in seedless plants. Produces haploid sperm.

Antheridium

17

Female reproductive organ in seedless plants. Produces haploid eggs.

Archegonium

18

Phylum of nonvascular plants made up of mosses and liverworts.

Bryophytes

19

In seedless plants, the multicellular haploid phase that produces gametes.

Gametophyte

20

Producing two types of spores; one gives rise to female megaspore and the other to a male microspore.

Heterosporous

21

Producing a single type of spore that gives rise to a gametophyte with both male and female reproductive organs.

Homosporous

22

Sporangium containing megaspores.

Megasporangium

23

A haploid spore that produces a female gametophyte.

Megaspore

24

Sporangium containing microspores.

Microsporangium

25

A haploid spore that produces a male gametophyte

Microspore

26

In seedless plants, hair-like extensions that anchor the plants to the ground.

Rhizoid

27

In seedless plants, a multicellular organ where meiosis occurs and haploid cells develop.

Sporangium

28

A haploid cell that divides by mitosis to develop into a haploid adult.

Spore

29

In seedless plants, the diploid phase that produces spores.

Sporophyte

30

A cone-like structure composed of sporophylls.

Strobilus