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Moss
Moss

Moss - PowerPoint Presentation

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Moss - Description

and Fern Life Cycles Group 1 Seedless Nonvascular Plants Live in moist environments to reproduce Grow low to ground to retain moisture nonvascular Lack true leaves Common pioneer species during succession ID: 540284 Download Presentation

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egg zygote ground sporophyte zygote egg sporophyte ground haploid female male gametophyte spores moss gametophytes ferns stage grow diploid

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Presentation on theme: "Moss"— Presentation transcript

Slide1

Moss

and

Fern Life CyclesSlide2

Group 1: Seedless, Nonvascular PlantsLive in moist environments to reproduce

Grow low to ground to retain moisture (nonvascular)

Lack true leaves

Common pioneer species during successionGametophyte most common (dominant)Ex: Mosses, liverworts, hornwortsSlide3

Moss Life CycleSlide4

Haploid gametophytes

1)Moss gametophytes grow near the ground (haploid stage)

2) Through water, sperm from the male gametophyte will swim to the female gametophyte to create a diploid zygote

3) Diploid sporophyte will grow from zygote

4) Sporophyte will create and release haploid spores

.

.

.

.

.

Diploid sporophyte

egg

egg

egg

egg

male

male

male

male

female

female

female

female

zygote

zygote

zygote

zygoteSlide5

5) Haploid spores land and grow into new gametophytes

.

.

.

.

.

ground

Haploid gametophytes

6) The process repeatsSlide6

Haploid gametophytes

.

.

.

.

.

sporophyte

egg

egg

egg

egg

male

male

male

male

female

female

female

female

zygote

zygote

zygote

zygoteSlide7

Group 2: Seedless, Vascular PlantsVascular system allows

Taller growth

Nutrient transportation

Live in moist environmentsswimming sperm

Gametophyte stageMale gametophyte: makes spermFemale gametophyte: makes eggsSperm swims to fertilize eggsSporophyte stageSpores released into air

Spores land and grow into gametophyteEx: Ferns, Club mosses, HorsetailsSlide8

Fern Life CycleSlide9

Adult

Sporophyte

.

.

.

.

1) Sporophyte creates and releases haploid spores

groundSlide10

.

.

.

.

ground

2) Haploid spores land in the soilSlide11

ground

3) From the haploid spores, gametophyte grows in the soil

Let

s zoom in

Fern gametophytes are called a prothallusSlide12

4) Sperm swim through water from the male parts (antheridium) to the female parts (archegonia)…zygote created

Let

s zoom back out

egg

egg

egg

zygote

zygote

zygoteSlide13

ground

5) Diploid sporophyte grows from the zygote

sporophyte

Fern gametophytes are called a prothallusSlide14

6) Fiddle head uncurls….fronds open up

ground

7) Cycle repeats

-- Haploid spores created and released

.

.

.

.

fiddlehead

frondSlide15

.

.

.

.

ground

2) Haploid spores land in the soilSlide16

ground

3) From the haploid spores, gametophyte (called the prothallus) grows in the soil

Let

s zoom inSlide17

4) Sperm swim through water from the male antheridium to the female archegonia

Let

s zoom back out

egg

egg

egg

zygote

zygote

zygoteSlide18

ground

5) Diploid sporophyte grows from the zygote

sporophyte

fiddleheadSlide19

6) Fiddlehead uncurls….fronds open up.

ground

7) Cycle repeats

.

.

.

.Slide20

Kobe KuizWhy do moss grow so low to the ground?

Which stage is the main stage of moss: sporophyte or gametophyte?

How do moss reproduce?

What is the major difference between moss and ferns?What are the leaves of ferns called?

What is needed for moss and ferns to reproduce?Which stage is the main stage of ferns: sporophyte or gametophyte?What stage is created when sperm and egg fuse: sporophyte or gametophyte?Name the gametophytes of ferns.