Plant evolution
Download
1 / 8

Plant Evolution - PowerPoint PPT Presentation


  • 94 Views
  • Uploaded on

Plant Evolution. Plant Evolution. Evolved from green algae (450 mya) Multicellular Autotrophs Land Adaptations 1) Retain Moisture 2) Transport nutrients 3) Growing upright 4) Reproducing on land. Land Adaptations. Problem: Retain Moisture Solution: Cuticle

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Plant Evolution' - madison-harrington


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Plant evolution
PlantEvolution


Plant evolution1
Plant Evolution

Evolved from green algae (450 mya)

Multicellular

Autotrophs

Land Adaptations

1) Retain Moisture

2) Transport nutrients

3) Growing upright

4) Reproducing on land


Land adaptations
Land Adaptations

Problem: Retain Moisture

Solution: Cuticle

waxy coating prevents water loss

cuticle


Land adaptations1
Land Adaptations

Problem: Transporting Resources

Solution: Vascular system

tubes to transport nutrients

Up from the roots; down from the leaves

Allows taller growth

glucose

water


Land adaptations2
Land Adaptations

Problem: Growing upright

Solution: Lignin

hardens cell wall

gives wood strength

mortar

lignin


Land adaptations3
Land Adaptations

Problem: Reproduction on land

Solutions:

Pollen: carried by wind/animals

Seeds: hard coat protects embryo inside


Alternation of generations
Alternation of Generations

Plants alternate between a diploid organism and a haploid organism

Sporophyte (diploid)

Zygote created

Zygote grows into adult sporophyte

Sporophyte makes spores

Gametophyte (Haploid)

Spores grow into a gametophyte

Male gametophyte creates sperm

Female gametophyte creates egg

Sporophyte restarts when egg and sperm make zygote

X

X

X

X

X


Kobe kuiz
Kobe Kuiz

  • What traits do plants and plant-like protista share?

  • Name 4 adaptations that plants have for life on land.

  • Which plant adaptation allows them to carry nutrients to great heights?

  • Which plant adaptation allows them to retain moisture?

  • What is the purpose of lignin?

  • What is the chromosome combination for the sporophyte stage?

  • What is the chromosome combination for the gametophyte stage?

  • What does the gametophyte stage create?

  • What does the sporophyte stage create?


ad